Jobs Golang

Project: 
A Berlin-based fintech startup developing a modular payment operating system for enterprise businesses. The platform enables companies to orchestrate payment flows, manage integrations, automate financial workflows, and optimize payment performance through a unified, scalable infrastructure. Trusted by global brands such as leading retail, mobility, and marketplace companies, the solution helps enterprises simplify complex payment ecosystems, improve operational efficiency, and accelerate expansion across international markets.

Cooperation: Long-term cooperation.
Stage: Existing project. The platform is live and serving enterprise clients.
Tech Stack: Golang, AWS, PostgreSQL, microservices, distributed systems.
Nice to have: payments domain experience, integrations experience, and AI tools in the dev lifecycle.
Timezone Requirements: CET / European business hours.
Location Requirements: Remote.
English: Upper-Intermediate / Advanced. B2+/C1. Hard requirement — confirmed by the client.
Requirements:

• 4+ years of experience with a proven track record of delivering projects.
• Strong software design intuition and clean code principles.
• Experience with distributed systems and microservices architecture.
• Proficiency in Golang, AWS, and PostgreSQL.
• Business-oriented mindset.
• AI-native — actively uses AI tools throughout the development lifecycle (strong preference).

Nice to have:

• Payments domain experience.
• Integrations experience.

Responsibilities:

• Design, develop, and maintain backend services in Golang.
• Work within a microservices architecture on a high-load distributed system.
• Collaborate closely with the existing engineering team.
• Participate in code reviews and technical discussions.
• Troubleshoot and optimize PostgreSQL-based systems.

Benefits from 8allocate:

• Team & Culture: Team events, offsites, and a culture that keeps people connected.
• Learning & Development: Budget for courses, certifications, and conferences.
• Wellbeing: Flexible support in line with company policy, with options to support your physical and mental wellbeing (sport, mental health, or medical insurance).
• Rest & Recovery: Paid vacation and sick leave.

At Brainway, we operate as a premier R&D-as-a-service and software startup partner, helping companies scale their technical capabilities with top-tier engineering talent. We are currently searching for a Senior Go Developer to join an innovative, US/Israel-based fintech company as a dedicated outsource developer.

In this role, you will be deeply integrated into the fintech partner's engineering team, taking ownership of complex backend challenges. You will bypass typical bureaucratic layers and report directly to the Technical Manager on the client side, ensuring agile decision-making and clear technical alignment. If you are a self-driven engineer who thrives in taking extreme ownership of scalable backend architectures in a fully remote environment, this is the role for you.

What You Will Do

• Design, develop, and maintain high-performance, scalable, and reliable backend services using Go.
• Work closely with the client's technical leadership and distributed team to align system architecture with business objectives.
• Take full ownership of the software development lifecycle for your services, from technical design and coding to deployment and monitoring.
• Identify and resolve performance bottlenecks, ensuring systems are highly optimized for scale.
• Promote engineering best practices, conduct rigorous code reviews, and help shape the technical culture of the remote team.

What We Are Looking For

• Core Go Expertise: 5+ years of software engineering experience, with a heavy, recent focus on building production-grade backend systems in Go. Deep understanding of Go's concurrency model (goroutines, channels), memory management, and standard library.
• Microservices & API Design: Proven experience designing and implementing microservices. Strong hands-on experience with gRPC and Protocol Buffers (Protobuf), as well as RESTful API development using modern Go routers/frameworks (e.g., Gin, Chi, or Echo).
• Data & Event-Driven Systems: Deep experience with NoSQL databases, specifically MongoDB (using the official mongo-go-driver and handling BSON data), and caching/in-memory data stores like Redis. Proven track record working with message brokers and event streaming platforms like Apache Kafka or RabbitMQ.
• AI-Assisted Development: Practical knowledge and experience integrating AI coding tools (such as Claude Code, GitHub Copilot, or similar agentic solutions) into your daily workflow. You must be able to clearly present and explain the methodologies, workflows, and specific techniques you use to accelerate development and improve code quality.
• Infrastructure & Cloud: Solid familiarity with containerization (Docker), orchestration (Kubernetes), cloud infrastructure (preferably AWS or GCP), and advanced CI/CD pipelines.
• System Design: Deep experience writing maintainable, testable code, combined with a practical understanding of domain-driven design and building highly available, fault-tolerant distributed systems.
• Remote Autonomy & Communication: Excellent English communication skills with the ability to work independently in a remote outsourced model while maintaining tight synchronization with the US/Israel leadership team.

We are seeking a Senior Backend Engineer (Go) to drive the evolution of the authorization platform. In this role, you will own the design and implementation of critical backend components, working with existing microservices written in Go and Java to deliver new functionality, migrate legacy code, and optimize performance. You will collaborate closely with product managers, frontend engineers, QA, and R&D teams to translate customer requirements into production-ready, scalable solutions. Given the platform’s complexity, high release cadence, and cloud-native foundation, you are expected to onboard quickly, work autonomously, and leverage AI-assisted development tools to increase delivery speed and quality. Your work will directly impact platform scalability, security posture, and customer satisfaction.

About the Product

Our product is a modern authorization platform that centralizes policy management and enforces dynamic, real-time access control across applications, APIs, and data. It combines centralized policy definitions with decentralized enforcement points to deliver low-latency authorization at scale. The platform integrates with leading IAM providers such as SailPoint, Okta, and Azure AD, and supports PostgreSQL, Elasticsearch, and MongoDB as backend data stores. Serving 100+ enterprise customers across finance, healthcare, and other regulated industries, the system processes millions of authorization requests per day, solving the industry challenge of fragmented and static access control. Reliability, security, and performance are critical in this high-volume, data-intensive, multi-tenant environment.

Details

Location: Remote

Employment Type: Full-time

Cloud Environment: AWS & GCP

Language Requirements: English Fluent 

Project durationL: 6+ months with possible prolongation 

Key Responsibilities

Design and develop backend services and components using Go and Java

Extend and refactor existing microservices, including migration of legacy code

Collaborate with R&D, product, frontend, and QA teams to turn custom implementations into production-grade features

Write high-performance, maintainable, and reusable code following established design patterns

Build and operate a scalable multi-tenant cloud architecture on AWS and GCP

Define, monitor, and meet performance metrics and KPIs for backend services

Integrate and manage data storage solutions including PostgreSQL, Elasticsearch, and MongoDB

Deploy and operate containerized applications using Docker and Kubernetes in production

Use AI-assisted development tools (e.g. Copilot, Cursor) to accelerate development and code comprehension

Mentor team members and contribute to a monthly release cycle with strict quality and security checks

Requirements

Bachelor’s or Master’s degree in Computer Engineering or a related field

7+ years of hands-on experience in backend development with Go and/or Java

5+ years of experience building Java microservices using Spring Boot

5+ years of experience with Docker and Kubernetes in production environments

3+ years of experience with PostgreSQL and NoSQL databases (Elasticsearch, MongoDB)

Proven experience designing and operating multi-tenant architectures

Hands-on experience with AWS and GCP

Strong proficiency with Linux/Unix systems and command-line tools

Demonstrated ability to design and deliver high-performance, scalable backend systems

English level B2 or higher

Nice to Have

Experience with authorization and authentication systems

Strong understanding of cybersecurity principles and policy-based access control

Background in enterprise or regulated environments

Familiarity with AI-driven development tools (Copilot, Cursor)

Ми будуємо власний CDN Edge сервер (ccdn-edged) — високопродуктивний демон на Go, що обробляє живий трафік через HTTP/1.1, HTTP/2 та HTTP/3 (QUIC). Це не черговий REST API. Це системне програмування: реверс-проксі, мережевий стек, оптимізація затримок, WAF, in-memory кешування і Edge Functions.

Шукаємо інженера, який розуміє як насправді працює HTTP, знає різницю між goroutine scheduler і OS thread, і якому цікаво копатись у кишках мережевих систем.

Технологічний стек

Мережевий шар:

    •    HTTP/1.1 & HTTP/2 — stdlib
    •    HTTP/3 / QUIC — quic-go
    •    Reverse Proxy — httputil + fasthttp
    •    TLS Fingerprinting

Безпека:

    •    Coraza WAF — інспекція трафіку
    •    TLS Client Identification
    •    Rate Limiting / Bot Detection

Стан та кеш:

    •    Redis — конфігурація зон, хостів, сертифікатів
    •    In-memory кеш об’єктів

Observability:

    •    VictoriaMetrics / Prometheus
    •    zerolog — structured logging
    •    Access logs via Unix-сокети
    •    Goja — JS Edge Functions (ES5.1+)

Середовище: Go 1.26, GOEXPERIMENT=jsonv2,greenteagc,synchashtriemap

Що обов’язково знати:

    •    Go 3+ роки в продакшені — goroutines, channels, sync primitives, memory model
    •    Глибоке розуміння HTTP/1.1, HTTP/2 (framing, multiplexing, flow control)
    •    Досвід написання реверс-проксі або мережевих серверів / клієнтів
    •    Розуміння TLS — handshake, certificates, ALPN, SNI
    •    Профілювання Go: pprof, trace, heap / goroutine dumps
    •    Робота з low-latency системами — буфери, zero-copy, escape analysis
    •    Redis: структури даних, pub/sub, pipeline

Буде плюсом:

    •    Знайомство з QUIC / HTTP/3 (RFC 9000, 9114)
    •    Досвід із fasthttp або іншими high-perf HTTP бібліотеками
    •    Розуміння WAF / ModSecurity rule engine
    •    Embedded JS runtime (Goja / V8 / QuickJS)
    •    Знайомство з VictoriaMetrics або Prometheus internals
    •    Досвід у CDN, DDoS-захист або edge computing

Важливо

Ця роль не підходить тим, хто спеціалізується виключно на REST API або бізнес-логіці. Тут потрібно розуміти, що відбувається на рівні TCP-з’єднання, як передаються фрейми HTTP/2 і чому zero-copy важливий для пропускної здатності. Якщо тебе цікавить «як все влаштовано зсередині» — ти потрібен нам.

Що ти будеш робити

    Розробляти та підтримувати ядро CDN Edge демона (ccdn-edged)
    •    Оптимізувати проксування трафіку — затримки, throughput, з’єднання
    •    Інтегрувати та налаштовувати WAF (Coraza) під реальний трафік
    •    Розвивати Edge Functions runtime на базі Goja
    •    Проектувати схеми кешування (L1 in-memory + L2 Redis)
    •    Писати benchmark-тести та профілювати критичні шляхи
    •    Брати участь у code review та архітектурних рішеннях

Умови роботи

    •    Повна зайнятість, Remote або Relocate
    •    Конкурентна зарплата — обговорюється на інтерв’ю
    •    Технічне завдання замість leetcode-тестів
    •    Невелика команда, прямий вплив на архітектуру
    •    Сучасний стек без legacy-обмежень
    •    Реальний high-load трафік з першого дня

Ми шукаємо junior Go розробника, який приєднається до нашої команди та працюватиме над розробкою backend систем і мікросервісів. Це чудова можливість для тих, хто хоче розвиватися в Go екосистемі та працювати над масштабованими застосунками.
 

Обов’язки:

• Розробка та підтримка backend сервісів на Go
• Участь у проєктуванні та імплементації REST API та gRPC сервісів
• Написання чистого, тестованого та документованого коду
• Робота з базами даних (SQL/NoSQL)
• Участь у code review та командних обговореннях архітектурних рішень
• Написання unit та integration тестів
• Відлагодження та оптимізація існуючого коду
   

Вимоги:

• Комерційний досвід роботи з Go (синтаксис, горутини, канали, інтерфейси) від 6 місяців.
• Розуміння принципів ООП та основних патернів проєктування
• Знання основ роботи з Git
• Базове розуміння HTTP/HTTPS протоколів
• Знання SQL та досвід роботи з реляційними БД (PostgreSQL, MySQL)
• Англійська мова: В2.
   

Буде плюсом:

• Досвід роботи з Docker та контейнеризацією
• Знання Redis, MongoDB або інших NoSQL баз
• Досвід написання тестів (testing, testify)
• Знайомство з CI/CD процесами
• Розуміння принципів мікросервісної архітектури
• Досвід роботи з message brokers (RabbitMQ, Kafka)
• Знайомство з Kubernetes
   

Ми пропонуємо:

• Конкурентну заробітну плату
• Можливість віддаленої роботи
• Менторство від senior розробників
• Можливості для професійного зростання
• Цікаві та складні технічні завдання
• Корпоративне навчання та конференції

About PredictSpring

PredictSpring is a market-leading company shaping the future of omni-channel retail and modern POS technology. We help global retail and lifestyle brands deliver seamless, modern, and scalable customer experiences across digital and in-store channels.

We are looking for an experienced Senior Golang Full Stack Engineer to join our team and help build scalable, secure, and high-performance software solutions across our platform, products, and business operations.

In this role, you will contribute to both backend and frontend development, working with Go/Golang, modern frontend technologies, cloud infrastructure, containerization, and CI/CD workflows. You will help deliver reliable enterprise-grade systems that support modern commerce, retail operations, and customer experience.

Responsibilities

As a Senior Golang Full Stack Engineer, you will:

• Design, develop, and maintain scalable, secure, and high-performance applications using Go/Golang, JavaScript, and modern frontend technologies.
• Build and maintain backend services, APIs, business logic, and application workflows that support PredictSpring’s platform and product operations.
• Develop and implement RESTful APIs to integrate frontend applications, backend services, third-party systems, and internal tools.
• Work with cloud-based infrastructure on AWS and Azure to support scalable, reliable, and production-ready systems.
• Build responsive and maintainable frontend features using modern JavaScript frameworks such as React.js, Angular, or Vue.js.
• Utilize Docker and Kubernetes to containerize applications, streamline deployment, and support scalable production environments.
• Collaborate with cross-functional teams, including product, engineering, design, operations, and business stakeholders, to deliver high-quality software solutions.
• Maintain clear and effective communication throughout the development process, especially when working with distributed global teams.
• Troubleshoot, debug, and optimize applications for performance, scalability, reliability, and maintainability.
• Write clean, efficient, maintainable, and testable code following best practices in Go/Golang, JavaScript, and full stack development.
• Participate in code reviews, technical discussions, architecture decisions, and continuous improvement of engineering standards.
• Implement and manage CI/CD pipelines using AWS, Azure, and modern DevOps tools for efficient and automated deployments.
• Ensure security, data protection, and reliability across applications, services, APIs, and cloud environments.
• Stay current with the latest software engineering, cloud, DevOps, and full stack development practices, and apply relevant improvements to PredictSpring’s platform and operations.

Requirements

We are looking for someone with:

• Excellent communication skills, including fluent verbal English, with the ability to explain technical concepts clearly and collaborate effectively across distributed teams.
• Bachelor’s or Master’s degree in Computer Science, Software Engineering, Information Technology, or a related field.
• Proven experience as a Full Stack Engineer or Full Stack Developer, with strong expertise in Go/Golang for backend services.
• Strong experience designing, building, and maintaining scalable backend systems, APIs, and enterprise-grade applications.
• Strong knowledge and hands-on experience with AWS and Azure cloud services.
• Extensive experience with JavaScript and modern frontend frameworks such as React.js, Angular, or Vue.js.
• Expertise in containerization and orchestration technologies such as Docker and Kubernetes.
• Proficiency with SQL and NoSQL databases, such as SQL Server, MongoDB, PostgreSQL, or similar technologies.
• Familiarity with frontend technologies such as HTML5, CSS, SASS, or LESS.
• Experience building and consuming RESTful APIs for seamless system integration.
• Knowledge of version control systems such as Git and collaborative development workflows.
• Strong problem-solving skills with the ability to troubleshoot complex issues across the full stack.
• Familiarity with agile development methodologies, sprint-based workflows, and collaborative engineering practices.
• Experience with CI/CD processes and modern deployment pipelines.
• Ability to work effectively with cross-functional teams across different time zones.

Preferred Qualifications

Nice to have:

• Experience with microservices architecture and distributed system design.
• Experience with serverless computing and cloud-native application development.
• Familiarity with DevOps practices and infrastructure-as-code tools such as Terraform and CloudFormation.
• Strong understanding of cloud-native security services, application security, authentication, authorization, and data protection best practices.
• Experience with testing frameworks, including unit testing, integration testing, and UI testing.
• Experience working with high-traffic, scalable, customer-facing SaaS or enterprise platforms.
• Experience supporting production systems, monitoring application health, and improving reliability over time.
• Experience in retail, e-commerce, omni-channel commerce, or POS technology is a strong plus.

Why PredictSpring?

• Join a market-leading company shaping the future of omni-channel retail and modern POS.
• Work on high-impact engineering challenges at the intersection of commerce, cloud technology, and customer experience.
• Collaborate with a talented global team in a flexible remote work environment.
• Enjoy opportunities for growth, learning, and professional development.
• Contribute to products used by some of the world’s most recognized retail and lifestyle brands.
• Be part of an innovative, collaborative, and engineering-driven culture focused on building reliable, scalable, and measurable business value.

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.

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.