Jobs Golang

Ми — продуктова компанія, яка активно розширює свою присутність на ринку iGaming. Наша місія — створювати технологічно розвинені, гнучкі та модульні рішення для індустрії.

Наш ключовий продукт — це ігрова SaaS-платформа, яка об’єднує понад 200 сервісів і забезпечує найкращий ігровий досвід для мільйонів гравців по всьому світу. Платформа включає все необхідне для iGaming-операторів: управління іграми, платежі, аналітику, CRM та інші модулі.

Ми розширюємо команду та шукаємо Senior Golang Developer’ів, яким цікаво вирішувати реальні технічні задачі.

Пропонуємо продуктове середовище, можливості для професійного зростання та свободу впливати на інженерні рішення.

Обов’язки

• Проєктування, розробка та підтримка backend-сервісів на Go;
• Підтримка та покращення наявної функціональності системи;
• Реалізація нових функцій, сервісів та інфраструктурних компонентів;
• Оптимізація продуктивності, масштабованості та доступності системи;
• Написання чистого, підтримуваного та добре задокументованого коду;
• Участь у code review та технічних обговореннях.

Вимоги

• 3+ роки комерційного досвіду з Go;
• Практичний досвід роботи з RabbitMQ або подібними message brokers;
• Досвід роботи з MongoDB, включно з моделюванням даних та оптимізацією продуктивності;
• Знайомство з Elasticsearch для пошуку, аналітики або логування;
• Досвід роботи з Grafana та Prometheus для моніторингу й observability;
• Хороше розуміння мікросервісної архітектури та розподілених систем;
• Досвід проєктування та інтеграції REST API;

• Практичний досвід роботи з Kubernetes.

   

Буде плюсом

• Базові або середні знання PHP для підтримки наявних сервісів, приблизно 20% навантаження;
• Досвід роботи з high-load системами;
• Розуміння event-driven architecture;
• Досвід роботи з CI/CD pipelines та cloud infrastructure;
• Досвід використання AI-інструментів для розробки, наприклад Claude, ChatGPT, GitHub Copilot, буде плюсом.

Що ми пропонуємо

• Гнучкий графік: remote, офіс або гібрид
• Додатковий вихідний у день народження (можна використати в будь-який день місяця)
• Конкурентну компенсацію відповідно до рівня навичок
• Медичне страхування (в Україні) та підтримку здоров’я
• 20 оплачуваних днів відпустки + 15 додаткових персональних днів
• 22 дні лікарняних, включаючи mental health days
• Подарунки та підтримку у важливі моменти життя (весілля, народження дитини, дитсадок)
• Професійний розвиток: конференції, навчання, курси

RiseGuide – це expert-powered self-improvement app, для людей які хочуть стати найкращою версією себе.

Наш ed-tech продукт для саморозвитку, побудований на прикладах і принципах видатних рольових моделей. Наші користувачі позбуваються шкідливих звичок за порадами Ендрю Губермана та Саймона Сінека, прокачують свої соцмережі за плейбуками Алекса Гормозі та MrBeast, розвивають свою харизму надихаючись принципами Роберта Дауні молодшого та Стіва Джобса.

Факти, а не гучні слова про RiseGuide :

• Знайшли юніт-економіку за 6 тижнів і з того часу активно масштабуємось (круто провели цей Q5 і виросли в 5 разів за минулий рік)
• 200 000+ платних користувачів, 4.6/5 в App Store та 4.4/5 на TrustPilot.
• 60+ людей у команді - вихідці з успішних tech-бізнесів та провідних програм менеджменту в світі.

Ми прагнемо переосмислити індустрію self-improvement і дати юзерам доступ до експертного досвіду on command. Для цього ми шукаємо Software Engineer (Golang), який буде разом з нами розвивати backend нашого продукту і допомагати перетворювати всі наші амбітні цілі у реальні досягнення. 

Що ми пропонуємо: 

• Можливість приймати архітектурні рішення і будувати систему з нуля 
• Мінімум бюрократії та максимальну швидкість запуску. Невелика команда, орієнтована на результат і швидкий time-to-market.
• Швидкий фідбек loop — твої рішення одразу працюватимуть у production та впливатимуть на сотні тисяч користувачів.
• Можливість доєднатись до команди одним з перших і залідити свою зону відповідальності
• Pure Tech: cучасний актуальний стек та Zero Legacy

Наш стек: Golang, Kubernetes, GCP, GraphQL

Що для нас важливо: 

• Маєш 4+ роки досвіду роботи з Golang   
• Відділяєш головне від другорядного та вмієш визначати пріоритети
• Надаєш перевагу ітеративному підходу
• Ти не фреймворк девелопер – тобі цікаво зазирнути під капот інструментів, які використовуєш та зрозуміти, як вони працюють. 
• Відчуваєш відповідальність за код, який доставляєш до користувачів
• Умієш аргументовано відстоювати технічну позицію, приймати зважені рішення та брати на себе відповідальність за результат.

Окрім бізнесів, ми  маємо Благодійний фонд SKELAR, який допомагає із забезпеченням українських захисників та захисниць амуніцією та технікою, а також підтримує зовнішні military-проєкти.SKELAR — середовище для самореалізації людей, які здатні створити успішні компанії. Ми такі компанії називаємо the next big everything. Віримо в їх потужність та масштаб.

Ми плануємо й надалі розвивати tech-бізнеси, підкорювати глобальні ринки та працювати задля перемоги України.

У NeverEnding ми створюємо продукти, де критична кожна мілісекунда та транзакція. 
Зараз ми шукаємо Lead Backend Engineer, який допомагатиме нам розвивати поточну платформу та розробляти її нову версію практично з нуля.

Ми шукаємо лідера для невеликої технічної команди (2–3 розробники), який поєднуватиме архітектурні завдання та менторство з активною розробкою (близько 60–70% часу — це безпосереднє написання коду).
 

Що ти будеш робити:

• Проєктувати архітектуру та активно писати код (близько 60–70% часу — розробка платформи ігрового провайдера).
• Працювати із системами, де критичні кожна мілісекунда та транзакція.
• Забезпечувати стабільність, масштабованість і надійність системи.
• Менторити та координувати команду з 2–3 розробників, проводити code review та допомагати їм рости технічно.
• Налаштовувати та покращувати процеси моніторингу, логування й обробки інцидентів.
• Проактивно знаходити технічні bottlenecks (вузькі місця) та пропонувати рішення для їх усунення.
• Прямий репорт та взаємодія безпосередньо з СТО для синхронізації технічного бачення.
   

Що ми очікуємо:

• 5+ років досвіду в бекенд-розробці з використанням Golang або Node.js.
• Обов'язково досвід технічного лідерства: менторинг колег, побудова процесів або керування невеликою командою (2-3 людини).
• Сильна експертиза в роботі з високонавантаженими та розподіленими системами.
• Практичний досвід роботи з PostgreSQL та Redis.
• Досвід роботи з AWS (Amazon Web Services).
• Досвід роботи з Docker та Kubernetes.
• Розуміння принципів побудови CI/CD-процесів.
• Рівень англійської мови: B1+.
   

Ми шукаємо людину, яка:

• Мислить системно, а не тільки на рівні коду.
• Готова брати відповідальність за стабільність і продуктивність платформи.
• Щиро любить складні технічні виклики.
• Проактивна та комфортно почувається в динамічному середовищі стартапу.
• Розуміє зв’язок між технічними рішеннями та бізнес-результатами.
   

Буде плюсом:

• Досвід в iGaming / gaming / high-load B2C продуктах.
• Робота з брокерами повідомлень (NATS, Kafka тощо).
• Практичний досвід із ClickHouse.
• Досвід налаштування Grafana.
   

Чому варто приєднатися до NeverEnding:

• Реальний вплив: ти визначаєш архітектуру та технічні стандарти нової версії платформи.
• Складний тех-стек: робота з real-time системами, де кожна мілісекунда має значення.
• Культура: прямий репорт СТО, взаємодія з фаундерами, швидке прийняття рішень і мінімум бюрократії.
• Перспектива: ми стартап з амбіцією стати провайдером нового покоління в iGaming.

📍 Формат: Remote або Hybrid (Barcelona, Warsaw)

🕐 Графік: Повна зайнятість

💰 Зарплата: Конкурентна - обговорюється за результатами співбесіди

Привіт! 👋
 

Ми шукаємо Go Developer, який приєднається до нашої команди та допоможе розвивати високонавантажений продукт. Якщо тобі цікаво працювати з мікросервісною архітектурою, брати участь у проєктуванні технічних рішень та впливати на розвиток продукту — будемо раді познайомитися!

Ми будемо раді познайомитися, якщо ти:
 

• Маєш 5+ років комерційного досвіду з Golang.
• Маєш досвід роботи з мікросервісною архітектурою.
• Маєш досвід розробки RESTful API та добре розумієш стандарти HTTP/TLS.
• Працював(-ла) з високонавантаженими системами.
• Брав(-ла) участь у проєктах з архітектурою високої доступності та відмовостійкості.
• Вмієш писати unit та integration тести.
• Маєш досвід роботи з WebSocket, Redis, RabbitMQ, Docker, Git, MySQL, PostgreSQL.
• Дотримуєшся принципів написання чистого та підтримуваного коду в дусі Go: KISS, мінімальні абстракції, ефективне використання інтерфейсів та композиції.
• Маєш досвід проведення рефакторингу та code review.
• Володієш навичками troubleshooting та аналізу проблем у production.
• Проактивний(-а), самостійний(-а) та відповідально підходиш до вирішення задач.
• Вмієш ефективно працювати в команді та використовувати командну експертизу.
• Готовий(-а) брати відповідальність за технічну частину продукту, включно з роботою з високонавантаженими системами.
• Вмієш читати технічну документацію англійською мовою.
• Маєш досвід роботи з AI-інструментами розробки (Claude Code, OpenAI Codex або аналогами): використовуєш їх для декомпозиції задач, роботи з контекстом, перевірки AI-згенерованого коду, написання тестів та безпечного впровадження змін у production. Вмієш критично оцінювати результати AI та відповідаєш за якість фінального рішення.
• Готовий(-а) приділяти близько 10–15% часу frontend-задачам на React/TypeScript (основний фокус ролі — Go).

Буде плюсом:
 

• Досвід написання навантажувальних тестів.
• Досвід роботи з MongoDB.
• Знання криптографії.
• Досвід роботи з Docker Compose.
• Досвід роботи з Blockchain/Crypto проєктами.
  
   

Чим ти будеш займатися:
 

• Розробкою нових функціональностей.
• Підтримкою та вдосконаленням існуючого коду.
• Виправленням помилок (bug fixing).
• Участю в проєктуванні архітектури.
• Проведенням code review.
• Написанням unit та integration тестів.
• Документуванням технічних змін (README, API, технічні нотатки).
• Співпрацею з іншими членами команди.
• Участю в регулярних командних зустрічах.

Етапи співбесіди:
 

Технічна співбесіда (до 1,5 години).

Фінальна співбесіда (до 1 години).

Коротко про умови:
 

💻 Сучасний fintech/crypto продукт
🌍 Remote формат роботи
🕐 Гнучкий графік
💬 Сильна команда та цікаві технічні задачі
📈 Можливість професійного розвитку

Meet the YozmaTech

YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster.
We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact.
Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family – you’ll feel right at home with us.

Our client is a pioneer in the field of identity data solutions, is revolutionizing how businesses confidently identify their customers and prospects across multiple touchpoints. Whether it’s through websites, applications, or physical locations, they provide innovative ways for their partners to interact with and understand their audiences.

We are looking for a Senior Backend Engineer to help scale a high-throughput, real-time bidding
platform that sits at the core of our header-bidding and identity products. You will design and
operate Go services that handle very high request volumes with tight latency budgets, working
close to the auction path where milliseconds and correctness both matter.
This is a hands-on engineering role on a fast-growing product. You will own services end to end
— from design and implementation through deployment, observability, and on-call — and
collaborate with product, QA, and business-development colleagues to ship integrations with ad-
tech partners and demand/supply platforms.

Key Requirements:

🔹Strong, production-level experience writing backend services in Go (Golang), including the concurrency model, profiling, and performance tuning (7+ years of commercial Go experience required).
🔹Demonstrable experience with header bidding — ideally hands-on with Prebid (Prebid Server adapters, modules, RTB, or comparable auction-side work).
🔹Experience building and operating high-throughput, low-latency distributed systems in production (must-have).

🔹Solid grasp of HTTP/REST, JSON, and server-to-server integration patterns, plus debugging across the request lifecycle.
🔹Strong experience with cloud infrastructure, primarily AWS (must-have). Experience with Azure and/or GCP is a strong advantage.
🔹Comfort with relational databases (e.g. MySQL / Aurora), including basic observability and deployment workflows.
🔹Pragmatic testing habits and a track record of shipping reliable software with good operational hygiene.
🔹Strong debugging and problem-solving abilities.
🔹Experience with CTV/video and post-bid measurement flows.
🔹Exposure to Prebid Server Java or other JVM services (useful for cross-module work).
🔹Experience with Kafka/streaming, Redis or similar caching layers, and container orchestration (Docker/Kubernetes).
🔹Hands-on experience using AI coding assistants (Claude Code, Cursor, GitHub Copilot, Codex, or similar) as part of the daily development workflow.
🔹English – Upper-Intermediate or higher.

What you will do:
🔹 Design, build, and operate high-throughput Go services on the real-time bidding and
header-bidding path, optimizing for latency, reliability, and cost at scale.
🔹 Develop and maintain Prebid integrations — Prebid Server adapters, bidder/identity
modules, and the supporting backend that powers them.
🔹 Build and harden integrations with ad-tech vendors (SSPs, DSPs, identity, and
measurement partners), including pixel, post-bid, and server-to-server flows
🔹 Profile and tune hot paths: concurrency, memory allocation, connection pooling, caching,
and request fan-out under high QPS
🔹 Own services through their full lifecycle — instrumentation, dashboards, alerting, and
participation in the on-call rotation.
🔹 Partner with product, QA, and business development to scope new partner integrations and
turn requirements into reliable, well-tested code.
🔹 Contribute to architecture decisions, code reviews, and engineering standards across the
Bidfusion team

Interview stages:
🔹 HR Interview;
🔹 Technical Interview;
🔹 Final interview;
🔹 Reference Check;
🔹 Offer;

Why Join Us?

At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products – and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.
From day one, you’ll get:
🔹 Direct access to clients and meaningful products;
🔹 Flexibility to work remotely or from our offices;
🔹 A-team colleagues and a zero-bureaucracy culture;
🔹 Opportunities to grow, lead, and make your mark.

After you apply

We’ll keep it respectful, clear, and personal from start to offer.
You’ll always know what project you’re joining – and how you can grow with us.

Everyone’s welcome

Diversity makes us better. We create a space where you can thrive as you are.

Ready to build something meaningful?

Let’s talk. Your next big adventure might just start here.

YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster.
We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact.
Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family – you’ll feel right at home with us.

Our client is a Cloud Infrastructure Automation Platform that enables organizations to automate, manage, and govern their entire cloud footprint with IaC. Agile and efficient cloud practitioners use Firefly for its AI-assisted remediations, streamlined IaC orchestration, and a unified system of record for Cloud Asset Management. With Firefly, Platform and DevOps teams can simplify cloud operations while accelerating innovation and maintaining security and performance at scale.

We are looking for a talented engineer to join our client's R&D team.

In this role, you will contribute to designing and building next-generation cloud-based solutions, tackling challenges related to performance, scalability, and availability across multi-cloud environments using the latest services and technologies.

You will also be involved in developing new features and enhancing the web application, building backend services that power complex functionality. In addition, you will help shape the team's adoption of modern AI tooling—from coding agents to MCP-based integrations—as these capabilities become a core part of the software development process.

Key Requirements:
🔹 5+ years of production experience with Go is a must; experience with at least one other backend programming language is highly preferred.
🔹Significant experience creating and utilizing RESTful API and scalable performance systems - a must;
🔹Have hands-on experience working with AI coding agents such as Claude Code, Codex, or GitHub Copilot as part of your daily workflow - a must;
🔹Experience in cloud infrastructure: AWS, GCP or AzureExperience with DevOps practices and technologies such as Terraform, K8s, VCS providers and CI systems - an advantage;
🔹Experience working with relational (PostgreSQL) and non-relational (Mongo) databases - an advantage;
🔹Experience working with message queues and event driven architecture - an advantage;
🔹Deep understanding of cloud architecture and modern system design principles - an advantage;
🔹Ability to take responsibility and work independently with a "can do" attitude and strong interpersonal and communication skills;
🔹English – Upper-Intermediate or higher.

What you will do:
🔹Design, build, and own backend services end-to-end, from architecture through production operation;
🔹Drive system and infrastructure design decisions as our platform scales;
🔹Choose and apply the right data stores and search technologies to keep services fast and reliable under load;
🔹Own the operational health of your services — security, monitoring, alerting, and reporting;
🔹Partner closely with product to shape requirements into well-scoped, shippable work;
🔹Collaborate across a multidisciplinary team of backend, frontend engineers and automation engineers to ship features end-to-end;

🔹The role includes an on-call rotation of approximately one week per month, shared across the team.

Interview stages:
🔹HR Interview;
🔹Tech interview;
🔹Client Interviews;
🔹Reference check;
🔹Offer;

Why Join Us?

At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products – and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.
From day one, you’ll get:
🔹 Direct access to clients and meaningful products;
🔹 Flexibility to work remotely or from our offices;
🔹 A-team colleagues and a zero-bureaucracy culture;
🔹 Opportunities to grow, lead, and make your mark.

After you apply

We’ll keep it respectful, clear, and personal from start to offer.
You’ll always know what project you’re joining – and how you can grow with us.

Everyone’s welcome

Diversity makes us better. We create a space where you can thrive as you are.

Ready to build something meaningful?

Let’s talk. Your next big adventure might just start here.

Stack: Golang, AWS, MySQL, Docker, Microservices.

We are seeking an experienced Golang Developer to join our team of talented developers for a stable yet dynamic project.

As the Golang Developer, you will play an integral role in developing, maintaining, and refactoring the existing codebase of a multi-service product with complex logic. You will work closely with our experienced Backend team and use the latest stack.

About the project:

A stable enterprise product for creating marketing presentations, preparing accompanying materials, and developing sales cycle business assistants for global pharmaceutical companies such as AstraZeneca, Novartis, Pfizer, Veeva etc., and financial institutions like ING and Van Lanschot. Completely our code base, we have been developing it since 2015.

Our services are distributed across multiple Availability Zones, adhering to a service-oriented architecture. Since 2018, we have prioritized GraphQL, although we maintain comprehensive support for RESTful APIs. Our core API services are built on a diverse stack of programming languages, each chosen to optimize task performance. This stack includes a rapidly evolving Golang Core API, legacy Core API services in PHP (leveraging frameworks like Laravel and Yii2) for established business logic and data layer interactions, Node.js (utilizing both JavaScript and TypeScript), Python APIs, and .NET Core C# components.

We utilize a hybrid cloud infrastructure, harnessing the strengths of both AWS and GCP to meet our operational needs, and focus on Serverless. Our work also involves extensive integration with API partners, including Veeva, Salesforce, and a variety of others, to ensure a seamless and robust service ecosystem.

As a product with high-security requirements, we undergo regular penetration testing from auditors and client companies to ensure compliance with industry standards such as OWASP, SOC, and ISO.

Essentials:

- Advanced knowledge of Golang, with experience in web frameworks such as Gin or Echo.

- Proficiency in developing automated tests using frameworks like Go Testing, Ginkgo, etc.

- Expertise in performance monitoring, optimization techniques, and troubleshooting.

- Strong knowledge of SQL and an understanding of transactions.

- Understanding of OOP, design patterns, cryptography, algorithms, and data structures.

- Versatility and comprehension of how all aspects of a web project work together (frontend, backend, and the network layer).

- Basic System Design skills.

- English reading and writing: Upper Intermediate.

- English speaking: Lower Intermediate.

Nice-to-haves:

- Development experience with Node.js, PHP.

- Knowledge of serverless architectures, especially AWS.

- Experience in building APIs using REST and GraphQL.

- Understanding of EDA, Microservices, Hexagonal Architecture.

- Proficiency in Docker.

- Experience with CI/CD Pipelines.

- Familiarity with agile methodologies (Scrum, Kanban).

- Degree in Computer Science.

- English speaking: Upper Intermediate.

Benefits:

In addition to a great base salary, we offer:

1) Funding for conferences, co-working spaces, software licenses, and other work-related expenses

2) MacBook if you require one

3) Mobile devices if you are involved with mobile development projects

4) Flexible working hours and fully remote working without micromanagement

5) Modern technology stack

6) Time for open source development

7) Bonus at the end of the year

8) Paid study leave

9) Paid English language courses

10) 36 company-paid days off per annum

11) Access to educational streaming services like Pluralsight

12) Input on the development of the company

Our core values:

We are open-minded, humble, respectful, self-driven, and honest, which allows us to create an atmosphere of synergy. Our team is a great fit for those who value self-organization and are passionate about personal growth. If this resonates with you, we’d love to have you join the team.

On behalf of our client, we are looking for a Senior Backend Engineer (Go)

Requirements:

- 5+ years of backend development experience with Golang (willingness to work with Ruby)

- Strong experience with PostgreSQL and NoSQL databases such as Redis

- Solid knowledge of RESTful APIs and HTTP

- Strong understanding of system architecture, high-load applications, and concurrency

- Experience building and maintaining backend microservices

- Experience with unit testing and automated testing practices

- Hands-on experience with Agile/Scrum methodologies

- Ability to design scalable technical solutions and work with complex business domains

- Experience with performance optimization and database query tuning

- Strong English communication skills

Nice to have:

- Experience with gRPC and Protocol Buffers

- Background in high-load, distributed systems

- Strong experience building concurrent applications

- Experience with performance tuning of relational databases

- Experience with external API/integration-heavy systems

Company offers:

- Long-term employment with possibilities for professional growth

- Fully remote work

- Reasonably flexible schedule

- 15 days of paid vacation

- Regular performance reviews

Senior Backend Engineer (Go)

Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

About the Product:

Our client operates a cloud-based platform dedicated to corporate ground transportation management, addressing a multi-billion-dollar market. The solution aggregates multiple transportation providers—such as corporate fleets, ride-hailing services, taxi operators, and limousine networks—into a unified system that helps businesses streamline operations and reduce spend. It serves a significant share of the largest companies worldwide and handles high volumes of transactions and data across diverse geographies. The platform’s core challenges include integrating heterogeneous external services, maintaining reliability under high-load conditions, implementing advanced business logic for scheduling and pooling, and providing accurate cost control and reporting. Strong backend engineering is critical to scaling global coverage, ensuring performance, and delivering a seamless user experience.

About the Role:

You will join a cross-functional development team responsible for core backend services that directly impact end users. The role offers full ownership of feature delivery—from reviewing product requirements and defining technical designs alongside architects and product managers, through to coding, testing, deployment, and monitoring in production. You will serve as first-line support for your services, proactively identify and address reliability and performance issues, and collaborate with other teams to ensure end-to-end system integrity. This position demands technical leadership, a hands-on approach to system architecture, and the ability to influence both engineering and product decisions. You will work remotely with periodic team gatherings and receive the tools and environment needed to deliver tangible business impact in a fast-paced, agile setting.

Key Responsibilities:

• Lead end-to-end development of backend microservices, including implementation, deployment, and production monitoring.

• Translate product requirements into scalable technical designs, data models, and RESTful APIs.

• Integrate with external transportation providers and internal systems to enable reliable, real-time workflows.

• Analyze and optimize system performance and database queries under high-load scenarios.

• Propose and implement architectural improvements to enhance resilience, scalability, and maintainability.

• Maintain and refactor existing services to improve code quality, test coverage, and observability.

• Collaborate with cross-functional teams and mentor peers on best practices in coding, testing, and operations.

• Participate in agile ceremonies, including backlog grooming and sprint planning, to align deliverables with business priorities.

Required Competence and Skills:

• 5+ years of backend software development experience in Golang (willingness to work with Ruby). 

• Proven experience designing and implementing data-driven applications using relational databases (e.g., PostgreSQL) and NoSQL stores (e.g., Redis).

• Solid understanding of RESTful API design principles and the HTTP protocol.

• Hands-on experience with Agile/Scrum methodologies and iterative delivery.

• Proficiency in writing unit tests and applying automated testing practices.

• Strong English communication skills, both verbal and written.

• Ability to understand complex business domains and translate needs into optimal technical solutions.

• Deep understanding of system architecture, high-load applications, and concurrency principles.

Nice to Have:

• Expertise in performance tuning of relational databases.

• Familiarity with gRPC and Protocol Buffers.

• Prior work on high-load, distributed systems.

• Background in building concurrent applications.

Why Us:

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.

Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

About the Product:

Our client operates a cloud-based platform dedicated to corporate ground transportation management, addressing a multi-billion-dollar market. The solution aggregates multiple transportation providers—such as corporate fleets, ride-hailing services, taxi operators, and limousine networks—into a unified system that helps businesses streamline operations and reduce spend. It serves a significant share of the largest companies worldwide and handles high volumes of transactions and data across diverse geographies. The platform’s core challenges include integrating heterogeneous external services, maintaining reliability under high-load conditions, implementing advanced business logic for scheduling and pooling, and providing accurate cost control and reporting. Strong backend engineering is critical to scaling global coverage, ensuring performance, and delivering a seamless user experience.

About the Role:

You will join a cross-functional development team responsible for core backend services that directly impact end users. The role offers full ownership of feature delivery—from reviewing product requirements and defining technical designs alongside architects and product managers, through to coding, testing, deployment, and monitoring in production. You will serve as first-line support for your services, proactively identify and address reliability and performance issues, and collaborate with other teams to ensure end-to-end system integrity. This position demands technical leadership, a hands-on approach to system architecture, and the ability to influence both engineering and product decisions. You will work remotely with periodic team gatherings and receive the tools and environment needed to deliver tangible business impact in a fast-paced, agile setting.

Key Responsibilities:

• Lead end-to-end development of backend microservices, including implementation, deployment, and production monitoring.
• Translate product requirements into scalable technical designs, data models, and RESTful APIs.
• Integrate with external transportation providers and internal systems to enable reliable, real-time workflows.
• Analyze and optimize system performance and database queries under high-load scenarios.
• Propose and implement architectural improvements to enhance resilience, scalability, and maintainability.
• Maintain and refactor existing services to improve code quality, test coverage, and observability.
• Collaborate with cross-functional teams and mentor peers on best practices in coding, testing, and operations.
• Participate in agile ceremonies, including backlog grooming and sprint planning, to align deliverables with business priorities.

Required Competence and Skills:

• 5+ years of backend software development experience in Golang (willingness to work with Ruby). 
• Proven experience designing and implementing data-driven applications using relational databases (e.g., PostgreSQL) and NoSQL stores (e.g., Redis).
• Solid understanding of RESTful API design principles and the HTTP protocol.
• Hands-on experience with Agile/Scrum methodologies and iterative delivery.
• Proficiency in writing unit tests and applying automated testing practices.
• Strong English communication skills, both verbal and written.
• Ability to understand complex business domains and translate needs into optimal technical solutions.
• Deep understanding of system architecture, high-load applications, and concurrency principles.

Nice to Have:

• Expertise in performance tuning of relational databases.
• Familiarity with gRPC and Protocol Buffers.
• Prior work on high-load, distributed systems.
• Background in building concurrent applications.

Why Us:

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.

We are looking for a Senior Backend Engineer to join the Core Banking Services team and help build and scale a high-performance Banking-as-a-Service (BaaS) platform.
 

The team develops secure, highly available backend services that enable internal products and partner banks to manage customers, accounts, and core banking processes. You will work on distributed systems supporting critical financial operations, with a strong focus on scalability, reliability, security, and clean architecture.
 

Responsibilities:

• Design, develop, and maintain scalable backend services using Java and Node.js/TypeScript.
• Build and maintain REST APIs and event-driven services within a serverless AWS architecture.
• Work with AWS services such as Lambda, SQS, API Gateway, EventBridge, DynamoDB, and S3.
• Contribute to the design and evolution of distributed systems supporting core banking processes.
• Take part in architectural and technical decisions, solution design, and technical documentation.
• Collaborate with other engineering teams and external partners to define and manage system integrations and dependencies.
• Develop reliable and well-tested solutions, covering unit, integration, and system testing.
• Work with Infrastructure as Code and contribute to improving CI/CD pipelines and development processes.
• Participate in threat modeling and contribute to building secure and resilient services.
• Take ownership of production reliability, including participation in an on-call rotation, incident investigation, root-cause analysis, and hotfixes.
• Proactively identify opportunities to improve system performance, reliability, and engineering practices.
   

Requirements:

• 5+ years of commercial Java backend development experience.
• Strong hands-on experience with Node.js/TypeScript.
• Solid experience building distributed and event-driven systems.
• Strong practical experience with AWS, particularly serverless services such as Lambda, SQS, API Gateway, EventBridge, DynamoDB, and S3.
• Experience with Infrastructure as Code, preferably Terraform and/or AWS CDK.
• Good understanding and practical application of software design patterns and clean architecture principles.
• Experience with RESTful API design and OpenAPI.
• Strong testing experience, including unit and integration testing.
• Experience working with event-driven architectures and messaging technologies such as Kafka.
• Strong problem-solving and analytical skills.
• Ability to take ownership of technical solutions and work independently.
• Excellent communication and collaboration skills.
• Fluent English.

Meet the YozmaTech

YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster.
We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact.
Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family – you’ll feel right at home with us.

Our client is a pioneer in the field of identity data solutions, is revolutionizing how businesses confidently identify their customers and prospects across multiple touchpoints. Whether it’s through websites, applications, or physical locations, they provide innovative ways for their partners to interact with and understand their audiences.

We are looking for a Senior Backend Engineer to help scale a high-throughput, real-time bidding
platform that sits at the core of our header-bidding and identity products. You will design and
operate Go services that handle very high request volumes with tight latency budgets, working
close to the auction path where milliseconds and correctness both matter.
This is a hands-on engineering role on a fast-growing product. You will own services end to end
— from design and implementation through deployment, observability, and on-call — and
collaborate with product, QA, and business-development colleagues to ship integrations with ad-
tech partners and demand/supply platforms.

Key Requirements:
🔹 Strong, production-level experience writing backend services in Go (Golang), including the
concurrency model, profiling, and performance tuning.
🔹 Demonstrable experience with header bidding — ideally hands-on with Prebid (Prebid
Server adapters, modules, or comparable auction-side work).
🔹 Experience building and operating high-throughput, low-latency distributed systems in
production
🔹 Solid grasp of HTTP/REST, JSON, and server-to-server integration patterns, plus
debugging across the request lifecycle
🔹 Comfort with relational databases (e.g. MySQL / Aurora) and cloud infrastructure (AWS),
including basic observability and deployment workflows
🔹 Pragmatic testing habits and a track record of shipping reliable software with good
operational hygiene
🔹 Strong debugging and problem-solving abilities;
🔹 Experience with CTV/video and post-bid measurement flows
🔹 Exposure to Prebid Server Java or other JVM services (useful for cross-module work). Experience with Kafka/streaming, Redis or similar caching layers, and container
orchestration (Docker/Kubernetes)
🔹 English – Upper-Intermediate or higher

What you will do:
🔹 Design, build, and operate high-throughput Go services on the real-time bidding and
header-bidding path, optimizing for latency, reliability, and cost at scale.
🔹 Develop and maintain Prebid integrations — Prebid Server adapters, bidder/identity
modules, and the supporting backend that powers them.
🔹 Build and harden integrations with ad-tech vendors (SSPs, DSPs, identity, and
measurement partners), including pixel, post-bid, and server-to-server flows
🔹 Profile and tune hot paths: concurrency, memory allocation, connection pooling, caching,
and request fan-out under high QPS
🔹 Own services through their full lifecycle — instrumentation, dashboards, alerting, and
participation in the on-call rotation.
🔹 Partner with product, QA, and business development to scope new partner integrations and
turn requirements into reliable, well-tested code.
🔹 Contribute to architecture decisions, code reviews, and engineering standards across the
Bidfusion team

Interview stages:
🔹 HR Interview;
🔹 Technical Interview;
🔹 Final interview;
🔹 Reference Check;
🔹 Offer;
 

🌍 Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

📌 Location: Poland 

🧩About the Product:

Our client operates a cloud-based platform dedicated to corporate ground transportation management, addressing a multi-billion-dollar market. The solution aggregates multiple transportation providers. such as corporate fleets, ride-hailing services, taxi operators, and limousine networks - into a unified system that helps businesses streamline operations and reduce spend.  

The platform’s core challenges include integrating heterogeneous external services, maintaining reliability under high-load conditions, implementing advanced business logic for scheduling and pooling, and providing accurate cost control and reporting. Strong backend engineering is critical to scaling global coverage, ensuring performance, and delivering a seamless user experience.

🌟About the Role:

You will join a cross-functional development team responsible for core backend services that directly impact end users. The role offers full ownership of feature delivery - from reviewing product requirements and defining technical designs alongside architects and product managers, through to coding, testing, deployment, and monitoring in production. You will serve as first-line support for your services, proactively identify and address reliability and performance issues, and collaborate with other teams to ensure end-to-end system integrity. 

📈 Key Responsibilities:

• Lead end-to-end development of backend microservices, including design, implementation, deployment, and production monitoring.

• Translate product requirements into scalable technical designs, data models, and RESTful APIs.

• Integrate with external transportation providers and internal systems to enable reliable, real-time workflows.

• Analyze and optimize system performance and database queries under high-load scenarios.

• Propose and implement architectural improvements to enhance resilience, scalability, and maintainability.

• Maintain and refactor existing services to improve code quality, test coverage, and observability.

• Collaborate with cross-functional teams and mentor peers on best practices in coding, testing, and operations.

• Participate in agile ceremonies, including backlog grooming and sprint planning, to align deliverables with business priorities.

💻 Required Competence and Skills:

• 5+ years of backend software development experience in Golang 

• Proven experience designing and implementing data-driven applications using relational databases (e.g., PostgreSQL) and NoSQL stores (e.g., Redis).

• Solid understanding of RESTful API design principles and the HTTP protocol.

• Hands-on experience with Agile/Scrum methodologies and iterative delivery.

• Proficiency in writing unit tests and applying automated testing practices.

• Strong English communication skills, both verbal and written.

• Ability to understand complex business domains and translate needs into optimal technical solutions.

• Deep understanding of system architecture, high-load applications, and concurrency principles.

➕ Nice to Have:

• Expertise in performance tuning of relational databases.

• Familiarity with gRPC and Protocol Buffers.

• Prior work on high-load, distributed systems.

• Background in building concurrent applications.

🚀 Why Us:

We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in).

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.

RedCore is an international business group that creates technological solutions for digital markets. Our products and services cover fintech, marketing, e-commerce, customer service, communications, and regulatory technologies.

We are looking for a Team Lead GO to join our team!

Requirements:

- 3+ years of development experience with Go;

- Strong time management and organisational skills;

- Ability to design and implement scalable and reliable software solutions;

- Excellent problem-solving skills;

Git, GitLab, GitLab CI;

- Experience with multiple databases (RDBMS, NoSQL, Redis) and messaging services (Kafka, NATS), ideally run in a cloud environment;

- Strong system design skills;

REST/RPC transports;

- Practical knowledge of containers (Docker, Kubernetes);

- Experience with microservices design and development;

- Understanding of the importance of a well-organised codebase and documentation;

- Strong analytical skills and an open-minded, creative team player mindset;

- English: Upper-Intermediate.

Will be plus:

- Understanding of event-driven architecture;

- Understanding of Twelve-Factor App methodology;

CloudEvents;

- Experience working with cloud services (GCP/AWS);

- GitOps;

- Terraform;

- Helm/ArgoCD;

- Grafana/Tempo/Loki + Prometheus;

- High-load systems;

- Experience coordinating complex third-party dependencies.

Soft Skills

- Responsibility;

- Sociability;

- Proactivity;

- Self-organization.
 

Responsibilities:

- A Team Lead is the day-to-day technical coordinator of a specific team, acting as the execution arm of the EM and ensuring that the team is focused, unblocked, and working efficiently toward shared goals.

- They ensure smooth operation, coordination, and quality within the team, while escalating architectural, technical, or people matters to the EM.

- They are accountable for team delivery, individual growth, and operational excellence within their scope.

Technical Leadership, Ownership & Support:

- Own the day-to-day technical execution within the team, from new features to bug fixes and quality improvements.

- Ensure the team's code quality through reviews and enforcement of best practices (testing, security, maintainability). 

- Drive code reviews, enforce coding standards, promote testing and documentation, and help the team write robust, production-ready code.

- Support and contribute to hands-on coding and testing. Lead by example through hands-on development, particularly for complex or critical features.

- Own delivery of team components and backend capabilities as defined in sprint goals.

- Facilitate design discussions within the team; escalate complex architecture topics to EM or Architect.

- Raise and track technical debt; provide input to the EM for prioritization.

- Facilitate task prioritization, workload balancing, and sprint planning. - Track progress, identify risks, and resolve blockers.

Planning & Delivery Coordination:

- Ensure alignment with PMs, QA, DevOps, and BAs on deliverables. 
- Work closely with PMs, EMs, QAs, and BAs to ensure that deliverables are clearly understood, scoped, and assigned.

- Break down work items into deliverable tasks in collaboration with PMs and EMs, balancing workload fairly across developers and helping manage priorities during sprints.

- Actively participate in sprint planning, stand-ups, and retrospectives.

Monitor team progress and adjust scope or priorities when needed, escalating blockers to the EM.

- Maintain transparency on delivery status and keep stakeholders informed of changes, delays, or challenges.

- Coordinate hand-offs and dependencies within the team and with adjacent teams.

People Leadership & Development:

- Directly manage engineers on the team (Juniors, Middles, Seniors).

- Conduct 1:1s, performance evaluations, career growth discussions, and coaching.

- Provide day-to-day mentoring and guidance to developers, especially junior and mid-level engineers, by answering questions, sharing context, and offering feedback.

- Foster a positive and inclusive team culture; ensure psychological safety, motivation, and team morale.

- Participate in team growth activities, including hiring, interviewing, candidate evaluation, and onboarding of new engineers.

- Identify talent and growth opportunities; support professional development. 

- Partner with EM and Domain Lead to hire, onboard, and retain high-quality engineers.

- Encourage a sense of ownership and pride in the team's work; celebrate wins and learn from failures together.

Communication & Reporting:

- Keep EM and PM informed of team progress, risks, and dependencies.

- Share updates from EM or domain leads with the team.

- Act as the go-to person for team-level updates in cross-team syncs or sprint reviews.

- Participate in cross-team discussions to ensure alignment with domain strategy and priorities.

Success Criteria:

- The team consistently delivers on commitments with high quality.

Engineers are growing in skills and autonomy.

- The team operates efficiently, collaborates effectively, and maintains a healthy culture.

- Stakeholders trust the team for delivery, transparency, and problem-solving.

Our benefits to you:
☘️An exciting and challenging job in a fast-growing business group, the opportunity to be part of a multicultural team of top professionals in Development, Architecture, Management, Operations, Marketing, Legal, Finance and more

🤝🏻Great working atmosphere with passionate experts and leaders, sharing a friendly culture and a success-driven mindset is guaranteed

🧑🏻‍💻Modern corporate equipment based on macOS or Windows and additional equipment are provided

🏖Paid vacations, sick leave, personal events days, days off

💵Referral program — enjoy cooperation with your colleagues and get the bonus

📚Educational programs: regular internal training sessions, compensation for external education, attendance of specialized global conferences

🎯Rewards program for mentoring and coaching colleagues

✈️In-house Travel Service

🦄Multiple internal activities: online platform for employees with quests, gamification, presents and news, clubs for movie / book / pets lovers and more

🎳Other benefits could be added based on your location

Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

About the Product:

Our client operates a cloud-based platform dedicated to corporate ground transportation management, addressing a multi-billion-dollar market. The solution aggregates multiple transportation providers—such as corporate fleets, ride-hailing services, taxi operators, and limousine networks—into a unified system that helps businesses streamline operations and reduce spend. It serves a significant share of the largest companies worldwide and handles high volumes of transactions and data across diverse geographies. The platform’s core challenges include integrating heterogeneous external services, maintaining reliability under high-load conditions, implementing advanced business logic for scheduling and pooling, and providing accurate cost control and reporting. Strong backend engineering is critical to scaling global coverage, ensuring performance, and delivering a seamless user experience.

About the Role:

You will join a cross-functional development team responsible for core backend services that directly impact end users. The role offers full ownership of feature delivery—from reviewing product requirements and defining technical designs alongside architects and product managers, through to coding, testing, deployment, and monitoring in production. You will serve as first-line support for your services, proactively identify and address reliability and performance issues, and collaborate with other teams to ensure end-to-end system integrity. This position demands technical leadership, a hands-on approach to system architecture, and the ability to influence both engineering and product decisions. You will work remotely with periodic team gatherings and receive the tools and environment needed to deliver tangible business impact in a fast-paced, agile setting.

Key Responsibilities:

• Lead end-to-end development of backend microservices, including design, implementation, deployment, and production monitoring.

• Translate product requirements into scalable technical designs, data models, and RESTful APIs.

• Integrate with external transportation providers and internal systems to enable reliable, real-time workflows.

• Analyze and optimize system performance and database queries under high-load scenarios.

• Propose and implement architectural improvements to enhance resilience, scalability, and maintainability.

• Maintain and refactor existing services to improve code quality, test coverage, and observability.

• Collaborate with cross-functional teams and mentor peers on best practices in coding, testing, and operations.

• Participate in agile ceremonies, including backlog grooming and sprint planning, to align deliverables with business priorities.

Required Competence and Skills:

• 5+ years of backend software development experience in Golang (willingness to work with Ruby). 

• Proven experience designing and implementing data-driven applications using relational databases (e.g., PostgreSQL) and NoSQL stores (e.g., Redis).

• Solid understanding of RESTful API design principles and the HTTP protocol.

• Hands-on experience with Agile/Scrum methodologies and iterative delivery.

• Proficiency in writing unit tests and applying automated testing practices.

• Strong English communication skills, both verbal and written.

• Ability to understand complex business domains and translate needs into optimal technical solutions.

• Deep understanding of system architecture, high-load applications, and concurrency principles.

Nice to Have:

• Expertise in performance tuning of relational databases.

• Familiarity with gRPC and Protocol Buffers.

• Prior work on high-load, distributed systems.

• Background in building concurrent applications.

Why Us:

We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in).

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.