Jobs Golang

COMFY — the leading omnichannel retailer of household appliances and electronics in Ukraine with over100 stores, which is among the top three e-commerce platforms. Every fourth Ukrainian family shops at COMFY.

We invite you to join the core team launching a new strategic direction for the company. As a Senior Backend Engineer, you will play a key role in building the technical foundation of a product that will reach millions of users. You will work closely with the CTO and senior colleagues to design a scalable microservices architecture, fostera culture of engineering excellence, and mentor the team. This is a unique opportunity to build a user-oriented product almost from scratch, with a tangible impact on the everyday life of Ukrainians.

Requirements:

Must have:

• 5+ years of software engineering experience

• 3+ years of Go development experience

• Strong experience with microservices architecture

• Proficiency in PostgreSQL, MongoDB, Redis, Elasticsearch

• Experience with Kafka

• Experience with Docker/Kubernetes

• Strong system design and communication skills

Nice to have:

• Experience with e-commerce platforms

• Experience with high load systems 

• Familiarity with event-driven architectures

• Experience in product-oriented engineering teams

• Mentoring experience

Your responsibilities:

• Microservices architecture: design and develop Go-based services  that process more than 100,000 transactions daily with a response time under 300 ms.
• Technical leadership: define development standards, establish best practices, and participate in decision-making on architectural committees.
• System integration: ensure smooth integration of new services into the existing technical infrastructure.
• Performance optimization: use PostgreSQL, MongoDB, Redis, Elasticsearch to maintain system stability under high loads.
• Cross-functional collaboration: interact with product managers, front-end engineers, and DevOps to deliver user-centric solutions.
• Knowledge sharing: support teammates, foster engineering culture and mentor middle and senior-level engineers.

Why join us:

• Technical autonomy: shape architectural solutions and set engineering standards.

• Real impact: your code will serve millions of Ukrainian families every day and transform the landscape of  e-commerce in Ukraine.

• Direct access to leadership: collaborate regularly with technical management.

• Social responsibility: join a company that actively supports Ukraine.

What we offer:

• A team of professionals and an innovative work environment
• A stable workload without a routine — every day is different
• The possibility of professional growth
• A comfortable office in Dnipro, a friendly atmosphere and an open culture
• Flexible work format (office/hybrid/remote)

Write to us if this sound like you ✉️

Backend & Infrastructure Engineer (Go, PostgreSQL, Airflow)

Remote — Europe · Full-time contractor (B2B)

About Soco

Soco is a social commerce scale-up driving hundreds of millions in revenue for e-commerce brands on TikTok Shop. Over 7,000 TikTok Shop affiliates use our iOS app to find top products, land brand deals, and track what's working.

TikTok Shop lets creators earn commissions by promoting products through videos and live streams — content becomes commerce, and creators earn when their audience buys through their links. We make that easier and more profitable.

The role

You'll own our backend infrastructure and data pipelines. Today that work sits with our lead engineer, and it's pulling him away from product — we want someone who takes it properly, makes it reliable, and then improves it.

Concretely:

• Run and improve our on-prem deployments (Linux, Ansible, systemd)
• Own PostgreSQL: schema design, query performance, migrations, backups
• Build and maintain Airflow DAGs for our scraping and data pipelines
• Build out monitoring and observability (Prometheus, Grafana) — mostly from scratch
• Write and maintain backend services and APIs in Go
• Work with QuestDB for time-series data at scale

What we need

• Strong PostgreSQL: you've designed schemas, tuned slow queries, and handled migrations on a live database
• Comfortable owning Linux servers — deployments, debugging, backups, being the person who fixes it when it breaks
• Experience building data pipelines, ideally with Airflow
• Go experience, or a backend background (Python, Java, etc.) and the confidence to pick Go up quickly — we'd rather have excellent Postgres and ops skills than years of Go
• Good written English and able to work async with a European-hours team

Nice to have, not required

QuestDB or another time-series database · n8n · web scraping, including JS-rendered pages · Prometheus/Grafana · Python

If you haven't touched QuestDB or n8n, that's fine. Anyone who knows Postgres well picks them up in days.

What we offer

• $2,500–4,500/month depending on experience, paid as a B2B contractor
• Fully remote within Europe
• A small team where your work ships immediately and you see the impact
• Real ownership of the infrastructure, not tickets handed down to you

We are the creators of a new fintech era!
Our mission is to change this world by making blockchain accessible to everyone in everyday life. WhiteBIT is a global team of over 1,200 professionals united by one mission — to shape the new world order in the Web3 era. Each of our employees is fully engaged in this transformative journey.
We work on our blockchain platform, providing maximum transparency and security for more than 8 million users worldwide. Our breakthrough solutions, incredible speed of adaptation to market challenges, and technological superiority are the strengths that take us beyond ordinary companies. Our official partners include the National Football Team of Ukraine, FC Barcelona, Lifecell, FACEIT and VISA.

The future of Web3 starts with you: join us as a Solidity & Golang Software Engineer!

Requirements:
 

• Experience: 4+ years of professional experience in software engineering, where the last 2+ years was hands-on experience with Golang stack 4+ years(+Solidity 2+ years) of technology (with a strong focus on blockchain domain).
• Blockchain Expertise: Extensive experience with Ethereum, including a deep understanding of its protocol, smart contract development, and associated technologies.
• Hands-on experience in developing, deploying and maintaining smart contracts on EVM chains (Solidity).
• Familiarity with smart contracts security best practices, upgradability and DeFi protocols.
• Microservices and APIs: experience in developing microservices and APIs, with knowledge of RESTful and/or gRPC frameworks.
• Kubernetes and CI/CD: familiarity with Kubernetes for container orchestration and CI/CD tools for deployment automation.
• Monitoring Tools: Familiarity with monitoring tools such as Prometheus and Grafana for performance tracking.
• Cloud Platforms: Familiarity with cloud platforms (preferably AWS) and experience with containerization (Docker) is a strong plus.
   

Would be a plus:
 

• Knowledge of Layer 2 Solutions: Familiarity with Layer 2 (L2) solutions, rollups, and the OP stack, with a clear understanding of their advantages and applications.
• Experience with Zero Knowledge technologies.
• Experience interacting with the Solana network and writing smart contracts in Rust.
• Experience in conducting and successfully passing smart contract security audits.
• Experience in developing blockchain nodes, bridges, indexers, etc.
   

Responsibilities:
 

• Design, develop, and maintain blockchain solutions, focusing on Ethereum and its associated technologies.
• Design, develop and maintain smart contracts on EVM chains (Solidity)
• Write, test, and deploy smart contracts, ensuring security and performance optimization.
• Implement and manage Layer 2 solutions and rollups, optimizing scalability and efficiency of blockchain applications.
• Design and develop microservices and APIs to support scalable applications, ensuring seamless integration with existing systems.
• Fostering collaboration, knowledge sharing, and professional growth.
• Work closely with cross-functional teams to define project requirements and ensure alignment with business objectives.
• Stay updated on advancements in blockchain technology and Ethereum, and apply new features and best practices to enhance our solutions.
  
  Working terms:
   
• Immerse yourself in Crypto & Web3:
• Master cutting-edge technologies and become an expert in the most innovative industry.
• Work with the Fintech of the Future:
• Develop your skills in digital finance and shape the global market.
• Take Your Professionalism to the Next Level:
• Gain unique experience and be part of global transformations.
• Drive Innovations:
• Influence the industry and contribute to groundbreaking solutions.
• Join a Strong Team:
• Collaborate with top experts worldwide and grow alongside the best.
• Work-Life Balance & Well-being:
• Modern equipment.
• Comfortable working conditions, and an inspiring environment to help you thrive.
• 24 calendar days of paid leave.
• Additional days off for national holidays.
  
  👉 Ready to disrupt the industry with us? Apply now and let’s build the decentralized future together!

Description:

We’re a part of the team that has been developing software to help construction companies streamline their operations. Today, our product is recognized as a pioneer and leader in the market, serving thousands of construction companies across the nation. Year after year, they continue to innovate, refine, and expand their products as the industry evolves. Now we build a cloud platform for planning and optimising resources for the construction, industry, and energy sectors.

We develop software that helps our clients manage every stage of construction from pre-construction through construction to its final support.

Requirements:

• Senior Individual Contributor with 5+ years of software engineering experience.
• Primary Scope: Architecting, building, and maintaining backend systems using Go and PHP, deployed on AWS.
• Database: Strong proficiency in MySQL schema design, complex query optimization, and performance tuning.
• Hands-on experience deploying and managing backend services on AWS
• English: Professional working proficiency (required for clear technical documentation and team syncs).

• Collaboration: Self-driven with strong communication skills and experience operating in agile/scrum environments.

   

Nice-to-Have:

• Experience with Terraform for automated provisioning.
• Working knowledge of React to support full-stack tasks when required.
• French: Conversational or professional working proficiency (strongly preferred for smoother integration with the France-based team).

Job responsibilities:

• Design, develop, and maintain high-performance backend microservices and web applications.
• Collaborate daily with a France-based product and engineering team to estimate and plan the implementation of large features.
• Create new or build upon existing features that solve complex customer problems.

About us:
 

BetterMe — an all-in-one well-being ecosystem empowering millions to become better — physically, mentally, and emotionally. We build what makes people better and keep challenging ourselves to inspire others.
 

We are looking for a Backend Engineer to join our Core team and help build reliable, scalable backend solutions for a product used by millions of users. This role combines developing new features, optimizing existing services, and contributing to the evolution of the system architecture.
 

Your impact:
 

• Develop new backend functionality using Go as the primary programming language, with occasional work on the PHP codebase (~80/20).
• Migrate business logic from legacy PHP monoliths to Go-based services.
• Ensure the stability, performance, and reliability of production systems.
• Contribute to infrastructure improvements, including CI/CD, observability, and operational excellence initiatives.
• Collaborate closely with product teams and stakeholders to deliver end-to-end solutions within the domain.
• Conduct code reviews with a focus on best practices, code quality, and maintainability.
   

About you:
 

• 5+ years of experience in backend development.
• 2+ years of commercial experience with Go (Golang).
• Experience working with PHP, preferably Symfony or Laravel.
• Strong understanding of idiomatic Go patterns, best practices, and application design principles.
• Actively use AI tools (e.g., Claude Code, Codex, Cursor) in your daily development work to improve workflows and automate tasks.
• Experience with relational databases such as MySQL and/or PostgreSQL.
• Experience with asynchronous messaging systems (RabbitMQ, Apache Kafka, Amazon SQS, or similar).
• Experience with caching and in-memory data stores (Redis / AWS ElastiCache).
• Exposure to infrastructure and operations, including Kubernetes, CI/CD pipelines, observability, and production troubleshooting.
• Experience working with Linux and Docker.
• Ability to write and maintain unit tests, ensuring code quality and reliability.
• Strong problem-solving skills and the ability to work with complex systems and domains.
   

Nice to have:
 

• Experience migrating from PHP monoliths to Go services.
• Strong experience with PHP 8+ (Symfony or Laravel).
• Experience building and operating distributed systems and high-load services.
• Hands-on experience with cloud and container orchestration technologies, including AWS services, Kubernetes, Helm, and service mesh solutions (e.g., Istio).
• Experience with microservice architectures and REST APIs.
• Knowledge of architectural design principles such as Clean Architecture, Hexagonal Architecture, and Domain-Driven Design (DDD).
• Strong communication and collaboration skills.
   

What you get at BetterMe:

A mission that inspires. Every line of code, every design, every idea helps millions of people become healthier and more confident.
Trust without micromanagement. You manage your time and make decisions independently. We value outcomes, not online hours.
Growth opportunities. 90% of our leads have grown within the company. There’s space for initiative, new responsibilities, and real career upgrades.
Flexible work format. Choose what works best for you — office, remote, or hybrid.
Wellness in practice. Offline: workouts with professional trainers in our corporate gym, massage, corporate lunches, sports, and team activities — everything you need to recharge and reset together. Online: regular online workouts, partner discounts, and free access to our products.
Health insurance & corporate doctor.
Open communication. Transparency across teams, honest feedback, and support for initiatives are part of our everyday culture.
Support for sports events. We cover entry fees and encourage the team to compete and participate together.
Modern equipment. We provide new hardware and everything you need for productive work.
Legal & finance support. Experienced lawyers and financial specialists are always there to help — from documents to personal consultations.
 

About the Company

We are an AI-powered B2B startup helping revenue teams understand what is changing inside their target accounts.

Our platform continuously tracks companies, competitors, stakeholders, and other relevant sources, transforming fragmented signals into actionable intelligence for enterprise customers.

We are a small startup that has been operating for around four years. We work directly with enterprise clients, move fast, and maintain a high level of service.

We are now in a growth stage and expanding our engineering team to increase our capacity to deliver.
 

About the Role

We are looking for a Senior Backend Engineer with strong Go experience and hands-on experience building AI-powered products.

You will primarily work on backend systems, APIs, data processing, and AI workflows. This may include RAG, LLM agents, prompt engineering, retrieval, and vector search.

This is a high-autonomy role. We are looking for someone who can take ownership of a problem, make technical decisions, and deliver solutions without constant supervision.
 

What You'll Do

• Build and maintain backend services in Go
• Develop features involving LLMs, RAG, AI agents, and prompt engineering
• Build APIs, integrations, and data-processing pipelines
• Work with NoSQL databases
• Contribute to retrieval, search, and AI workflows
• Take ownership of features from design to production
• Troubleshoot and solve production issues independently
• Collaborate closely with a small engineering and product team
• Occasionally handle simple Vue.js frontend tasks
   

Requirements

Must have:

• 5+ years of commercial software engineering experience
• 2+ years of commercial Go/Golang experience
• Hands-on experience with at least some of:
  • RAG
  • AI/LLM agents
  • Prompt engineering
  • LLM-powered applications
• Experience with NoSQL databases
• Strong backend development fundamentals
• Ability to work independently with minimal supervision
• Comfortable working in a fast-paced startup environment
• Ability to handle simple frontend tasks in Vue.js, or willingness to learn
   

Nice to Have

• AWS
• Agentic application development
• Vector databases
• Python
• Production RAG systems
• Enterprise SaaS experience
• Experience with data-intensive applications and integrations
   

What We Value

Ownership — You can take a problem from idea to production.

Autonomy — You don't need constant direction or control to make progress.

Pragmatism — You focus on solutions that work rather than unnecessary complexity.

Speed — You are comfortable working in a small team where priorities can move quickly.

Product mindset — You care about the customer problem, not just the code.

Remote, worldwide, long-term, b2b, full-time
 

About the Company
 

We are an AI-powered B2B startup helping revenue teams understand what is changing inside their target accounts.

Our platform continuously tracks companies, competitors, stakeholders, and other relevant sources, transforming fragmented signals into actionable intelligence for enterprise customers.

We are a small startup that has been operating for around four years. We work directly with enterprise clients, move fast, and maintain a high level of service.

We are now in a growth stage and expanding our engineering team to increase our capacity to deliver.

 

About the Role
 

We are looking for a Senior Backend Engineer with strong Go experience and hands-on experience building AI-powered products.

You will primarily work on backend systems, APIs, data processing, and AI workflows. This may include RAG, LLM agents, prompt engineering, retrieval, and vector search.

This is a high-autonomy role. We are looking for someone who can take ownership of a problem, make technical decisions, and deliver solutions without constant supervision.

 

What You'll Do
 

• Build and maintain backend services in Go
• Develop features involving LLMs, RAG, AI agents, and prompt engineering
• Build APIs, integrations, and data-processing pipelines
• Work with NoSQL databases
• Contribute to retrieval, search, and AI workflows
• Take ownership of features from design to production
• Troubleshoot and solve production issues independently
• Collaborate closely with a small engineering and product team
• Occasionally handle simple Vue.js frontend tasks
  
   

Requirements
 

Must have:

• 5+ years of commercial software engineering experience
• 2+ years of commercial Go/Golang experience
• Hands-on experience with at least some of:
  • RAG
  • AI/LLM agents
  • Prompt engineering
  • LLM-powered applications
• Experience with NoSQL databases
• Strong backend development fundamentals
• Ability to work independently with minimal supervision
• Comfortable working in a fast-paced startup environment
• Ability to handle simple frontend tasks in Vue.js, or willingness to learn
  
   

Nice to Have
 

• AWS
• Agentic application development
• Vector databases
• Python
• Production RAG systems
• Enterprise SaaS experience
• Experience with data-intensive applications and integrations
  
   

What We Value
 

Ownership — You can take a problem from idea to production.

Autonomy — You don't need constant direction or control to make progress.

Pragmatism — You focus on solutions that work rather than unnecessary complexity.

Speed — You are comfortable working in a small team where priorities can move quickly.

Product mindset — You care about the customer problem, not just the code.

Job Description

Preferred qualifications & skills:

• Education & experience: Bachelor of Science in Computer Science, Engineering, or a related field, plus extensive commercial experience in cloud orchestration.
• Core Languages: Strong proficiency in Go and Perl (Perl is the primary language for our codebase).
• Virtualization & OS: Deep knowledge of Linux OS internals, QEMU orchestration, and CPU flag management.
• Architecture: Understanding of ARM architecture, memory unified models, and CPU-to-CPU inter-process communications.

Nice to have skills:

• Familiarity with Python for control plane operations.
• Previous experience dealing with NUMA allocation logic.

Job Responsibilities

• Port and upgrade existing x86 orchestration codebases (primarily Go and Perl) to ensure full compatibility with the new ARM architecture.
• Manage and update QEMU flag configurations and networking feature support tailored for the ARM based platform.
• Evaluate and tune NUMA memory allocation logic in Python to maximize performance for the multi-core, multi-processor hardware.
• Perform initial code analysis to identify and refactor architecture specific implementation

Department/Project Description

We are seeking a Senior Software Engineer to join our Core Compute team, managing the application and orchestration layers that allow virtual machines to run seamlessly for our customers across the cloud ecosystem. We are embarking on a strategic project to integrate a new ARM-based multi-core multi-processor into our infrastructure. This initiative involves porting our orchestration stack from x86 to ARM, updating QEMU configurations, and optimizing NUMA memory allocation logic to prepare the platform for future integrations.

Skill Category

Engineering - Other

Keyskills - Must Have

• Linux
• KVM/QEMU
• GOlang Programming language
• Perl

Keyskills - Nice to Have

• Virtualization
• ARM

Short overview of the project (What technology stack is used on the project, and length of the project)

AI tourism platform looking for a Team Lead Product Engineer who uses AI to ship fast.

📚 Our stack:

Backend: Go monorepo (no framework, 3+ services)

Hosting: PaaS-managed containers, local setup fully mirrors production via Docker Compose

Tools: Jaeger tracing, Betterstack (Logging, Alerting), Redis Asynq queue

Databases: PostgreSQL, Redis

AI tooling: Claude Code (mandatory)

🚢 Products you will lead a pod on:

An AI search & recommendation engine for major travel enterprises: heavy client integration work (SSO, security reviews, GDS integrations) with demanding enterprise customers

A content enrichment API: high-scale, data- and AI-focused backend work

Partner and supplier integrations, data ingestion pipelines, LLM providers

Employment and number of hours per week/month (part-time, full-time, freelance)

Engagement: full-time, 40 hours/week

Candidate’s location and required Time Zone for work

Location: remote, within ±3 hours of CET

Timezone is the main priority, so your usual scope of EU and Ukraine within the required overlap works well. 

Language of communication

Language: English required

Functional responsibilities (What will an employee do on the project?)

⚠️ European or African timezones (±3 hours from CET) Available full-time (40 hours/week)

⚠️IMPORTANT: This is not a traditional coding role. You'll use Claude Code and other AI tools to 10x your output, always thinking about how the product or feature you are working on benefits the user. Also: we have no QA team, you OWN the quality of what you ship!

A Team Lead is the spokesperson, coordinator and facilitator for their pod, internally with product, design and leadership, and externally with clients. You come from the management path, not the deep-specialist path: you have seen a lot as a developer and have consciously decided that enabling a team, working with clients and driving product outcomes is what energises you now, not coding all day.

You remain a hands-on engineer. Expect roughly 30-40% of your week on coordination, client and product work, and the rest as an individual contributor. This is not an HR-style people-management role: no performance reviews, no career coaching. As we scale, light one-on-ones and check-ins may become part of it, but the job is coordination and delivery, not administration.

What you'll actually do:

Be the spokesperson for your pod, internally with product, design and leadership, and externally with clients and partners

Coordinate work across the pod: break initiatives into chunks, sequence them, surface blockers and facilitate hand-offs (lightweight project management, we deliberately have no project managers)

Gather client requirements first-hand and funnel them straight into the pod so nothing gets lost in translation

Represent your pod in product planning sessions and bring a strong product-driven point of view to scoping and trade-offs

Help pod members with product decisions and prioritisation, enabling engineers who may be technically stronger than you

Contribute hands-on as an engineer: own features end-to-end, use Claude Code to generate Golang backend code, review AI output for quality and architectural fit

Join client meetings to align on requirements, report on delivery and keep the relationship professional and calm

Requirements for a candidate

Min 5 years of experience

2-3+ years of technical leadership experience leading a team, squad, pod or similar unit (a hard must, think team lead or early-stage engineering manager)

A developer's background (5 years minimum): you have seen production reality with your own hands before moving towards leading people

A genuinely product-driven mindset: you think about user value and business outcomes before implementation

Comfort facilitating and coordinating a pod without relying on formal authority

Willingness and ability to take part in client meetings and act as the external face of your pod

Excellent spoken and written English for planning sessions, stakeholder updates and client conversations

Ownership mentality with a strive for elegantly simple, high-quality solutions; you test your own work thoroughly since we have no QA team

Proven experience using Claude Code, share specific examples

Solid Golang experience, you'll review AI's code and you must understand how it works

Ability to do on-call once in a while to help maintain our platform's reliability & uptime

Must-Have Requirements (Team Lead — no flexibility on any)

Go (Golang): Real production experience, not just personal projects. No flexibility on other technologies.

AI/backend engineering: Deep knowledge of building and productionizing complex AI systems — observability, reliability, quality

Product mindset: Ability to think beyond engineering toward product outcomes

Leadership: Capable of leading without needing coaching or internal mentoring

English communication: Very strong, given client-facing responsibilities

Minimum 5 years of experience across the board

Candidates should be responsible for testing their own code — QA ownership expected

The Team Lead will head a small pod (not a traditional manager with direct reports)

Client-facing responsibilities begin from onboarding, with full client-facing ownership expected to grow over time

Also they will have on-call duties (now it’s during working hours and weekends, rotation among team members, but later they want to have 24/7 on call, so one person will be on-call for 24 hours (probably) and it will be compensated extra). 

Nice-to-Have

German language: A significant bonus but not required — the one criteria the client can flex on

Any special requirements for the person 

❤️ You are a great fit if you:

Made the classic developer's fork-in-the-road decision, lifelong engineer or leading people, and chose people, clients and product

Are energised by product planning sessions and have opinions about what the pod should build next, not just how

Are comfortable being the face of your pod, in internal planning rooms and on calls with enterprise clients

Enjoy enabling engineers who are technically stronger than you

Hello! ✨

We’re Wildix, a global leader in Unified Communications & Collaboration as a Service (UCaaS) and we’re on a mission to redefine how businesses connect. Our secure, web-based and AI-powered solutions help companies around the world collaborate smarter, serve customers better and grow stronger — and we want you to help shape what’s next.

About Us…

In 2005, brothers Dimitri and Steve Osler set out to reimagine how businesses communicate, and that vision became Wildix. Today, from our headquarters in Tallinn, Estonia, Wildix is one of the world’s fastest-growing UCaaS companies, with 300+ team members from 15+ nationalities, working across Europe, the UK, the Americas and beyond. We serve businesses in 135+ countries through a partner-first ecosystem, delivering secure, intuitive solutions that keep companies connected, productive and ready for what’s next.

At Wildix, we don’t just build technology, we live it. As a remote-first company, we rely on our own platform every day to collaborate globally and innovate fast. With steady growth and a strong foundation, we offer real opportunities to advance your career as we scale, making an impact in a global team that’s shaping the future of work.

At Wildix, our mission is clear: Empower companies worldwide with seamless communication solutions that drive productivity, efficiency, and growth.

About The Role:

We are looking for a Backend Developer to join our Business Layer & Portal team. In this role, you will be a key contributor to our core business platform, managing critical integrations and services. This is a polyglot, AWS-heavy environment where your code will orchestrate workflows between Wildix cloud infrastructure and major business systems (SAP, Salesforce, Stripe, etc.). If you love serverless architectures, solving complex business logic, and working with both PHP and Go, you’ll fit right in.

Are you up for the challenge?

What You Will:

• Develop and support core application services: Build, test, and debug backend features.
• Integrate with enterprise platforms: Build and maintain secure integrations with Salesforce, SAP B1 Service Layer, payment processors (Stripe), and tax/VAT engines (SureTax).
• Work on Serverless AWS infrastructure: Develop and deploy serverless event-driven applications on AWS using AWS Lambda, API Gateway, SQS, Route53, and AppConfig.
• Optimize Performance & Security: Enhance API latency, build robust caching strategies with Redis/ElastiCache, and protect system integrity through secure token-based and scope-based authorization.
• Collaborate cross-functionally: Work closely with Customer Care, SAP, CRM, SRE, Sales, Marketing, CLASSOUND, and Accounting teams to build requested features and troubleshoot integration bottlenecks.
• Maintain documentation: Write and update API specifications and system design diagrams for seamless team collaboration.
   

What You Will Bring:

• 2+ years of professional backend development experience, with solid proficiency in PHP 8.x and/or Go (Golang).
• Practical experience building applications on AWS (AWS Lambda, SQS, API Gateway) and utilizing Infrastructure as Code (AWS SAM).
• Strong SQL skills (MySQL, MSSQL / SQL Server) and a solid understanding of cache-first patterns (Redis, Memcached).
• Proven track record of designing, testing, and debugging third-party API integrations (CRM, payment gateways, ERP systems, external web services).
• Experience in writing clean, testable code with robust unit/integration testing (PHPUnit, Go testing).
• Upper-Intermediate English skills (B2+) for daily collaboration in our international team.
   

Bonus Points If:

• Experience with Bref (PHP on AWS Lambda) and modern PHP API design (PHP-DI, FastRoute, Harmony/Laminas middleware).
• Direct experience with SAP B1 Service Layer, Salesforce REST API, or automated tax calculation services.
   

Why You’ll Love It Here

👫 Work with a Supportive, High-Performing Team – We believe in trust, autonomy, and working with bright, passionate individuals who drive real impact.

🌍 A Truly International Workplace – Our diverse and inclusive team ensures you’ll always feel connected and supported, no matter where you are.

🚀 Shape the Future of Global Communication – Be part of a team transforming how businesses operate in an era of remote work and AI-powered collaboration.

💼 Join a Profitable & Stable Company – We’re not a startup experiment, we’re a two decade old success story with sustained profitability, meaning we can back your boldest ideas.

What we offer

🏖️ Generous Time Off – Take the breaks you need to relax, recharge, and come back inspired.

💻 Top-Tier Tech – Love Mac? So do we! We equip our team with the best tools for success.

🚀 Career Growth & Development – Access to programs and events to keep you at the top of your game.

🌱 Well-being Support – We offer access to psychology sessions to support your mental and emotional health

Happy with them? We offer even more! Our Benefits are country-specific, you can ask your recruiter for more information

Interview Process

🤝 Step 1: Initial Screening – A chat with our Talent Team to understand your background, experience, and motivations (30 mins)
🛠️ Step 2: Final Tech Interview – A conversation with Team Lead and an SRE to ensure alignment with our values and mission (60 mins)

We Are Wildix

Wildix is an equal-opportunity employer. We value diversity and welcome all applicants regardless of race, gender, age, religion, or any other characteristic. Everyone is encouraged to apply and is welcome to join our Blue Ecosystem. 

Ready to join us? Apply Now!

We are New Wave Devs, a senior engineering team. We are hiring a Senior Go engineer to embed long-term with our client, a Netherlands-based AI-native creative-tools company building the backend of their AI Studio product.

It is a fast-paced product team: new frontier AI models are pushed into production within a day or two of release. You will own real pieces of the backend and work directly with their engineers.

What you will do:
• Design and scale Go microservices that manage the lifecycle of AI generations (image, video, audio, 3D, vector)
• Build and run RAG pipelines and agent orchestration around production models
• Handle long-running, resource-intensive inference tasks and high data throughput: queues, backpressure, retries
• Work with AWS (EKS, S3, Lambda), Kafka and SQS for async processing, ConnectRPC / gRPC / GraphQL
• Bridge AI model outputs into user-facing creative workflows

You should have:
• 5+ years backend, Go-first
• Hands-on LLM or RAG work that reached production, not API calls from a prototype: LangChain, LangGraph, pgvector or similar
• AWS (EKS/K8s), Kafka or SQS, gRPC/ConnectRPC, microservices at scale
• Ownership mindset, comfortable when specs are not perfect, able to switch between shipping fast and building for scale
• Real interest in the product itself. The client asks about it directly.
• Good English, daily work with the client team

We offer: long-term full-time contract through New Wave Devs, competitive rate, fully remote, fast start, days not weeks. Two technical interviews with the client's engineers, screen share and real code.

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 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.

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

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