Jobs

We are looking for a Technical Lead to spearhead the design, development, and advancement of our core services powering blockchain-based applications. This position requires a strong combination of technical leadership, hands-on engineering, and team management. You’ll guide a skilled team in building scalable, secure backend systems while also playing an active role in defining architecture and writing code.

Key Responsibilities

Technical Leadership:

• Design and implement core backend services for blockchain applications, including APIs, messaging systems, identity/auth, wallet integration, storage, and data services.
• Define and enforce engineering best practices and coding standards.
• Drive architectural decisions in collaboration with senior engineers and stakeholders.
• Stay abreast of blockchain trends and translate those into strategic opportunities for the team.

Team Management:

• Provide direct line management to a team of engineers: hiring, performance management, mentoring, and career development.
• Foster a culture of accountability, continuous learning, and engineering excellence. Balance resource allocation across development, support, and innovation initiatives.

Cross-functional Collaboration:

• Work closely with Solution, DevOps, and Security teams to align technical capabilities with business needs.
• Translate product requirements into actionable technical plans.
• Champion communication and transparency between technical and non-technical stakeholders.

Hands-On Contribution:

• Spend a significant portion of your time writing and reviewing code (minimum 30-40%).
• Lead by example: actively troubleshoot, refactor, and optimize systems for performance and reliability. Participate in incident response and postmortem analysis to improve system resilience.

Requirements:

• 6+ years of backend or systems engineering experience with at least 2+ years in a technical leadership or line management role.
• Strong proficiency in one or more programming languages (e.g., Go, Rust, Java, Python).
• Proven experience building distributed systems or backend infrastructure, ideally for blockchain or decentralized applications.
• Solid understanding of cryptographic principles, consensus algorithms, or related blockchain components is a strong plus.
• Demonstrated ability to lead engineering teams while staying technically hands-on.
• Strong communication, interpersonal, and organizational skills.

Preferred Qualifications:

• Experience in Web3, DeFi, or other blockchain-related domains.
• Familiarity with containerized microservices (Docker, Kubernetes), cloud infrastructure (AWS/GCP), and CI/CD pipelines.
• Contributions to open-source blockchain projects are a big plus.
• Knowledge of performance profiling, observability, and scalability techniques.

We offer:

• Competitive compensation.
• Social package (24 working days of annual leave, 5 paid sick days).
• Flexible working hours.
• Challenging projects in diverse business domains and a variety of tech stacks.
• Personal development and professional growth opportunities.
• Work with talented, ambitious and family-feel teams.
• Educational possibilities: corporate courses, knowledge hubs, and in-house English classes.
• Compensation for your professional certification & support for your learning activities.
• Opportunity to choose IT equipment you like.
• Corporate social responsibility.

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 ✉️

🌎 Akvelon is a known USA company, with offices in places like Seattle, Mexico, Ukraine, and Poland. Our company is an official vendor of Microsoft and Google. Our clients also include Amazon, Evernote, Intel, HP, Reddit, Pinterest, AT&T, T-Mobile, Starbucks, and LinkedIn. To work with Akvelon means to be connected with the best and brightest engineering teams from around the globe and working with an actual technology stack building Enterprise, CRM, LOB, Cloud, AI, and Machine Learning, Cross-Platform, Mobile, and other types of applications customized to the client’s needs and processes.

We are looking for a skilled and talented AWS Cloud Engineer with GO to join one of our projects.

What do we expect:

• 4 + years of experience in software engineering.
• Strong proficiency in АWS services, including VPC, Security Groups, AWS Connect, Cognito, API Gateway, Lambda, etc.
• Experience with RDS, PostgreSQL.
• Knowledge of Terraform.
• Strong programming skills in Golang.
• At least Upper-intermediate English.

Nice to have:

• DevOps experience.
• Experience with NodeJS.

Responsibilities:

• Design, develop, and maintain cloud infrastructure and services using AWS and Terraform.
• Implement and manage secure, scalable, and highly available AWS environments (VPC, Security Groups, Lambda, API Gateway, Cognito, etc.).
• Develop backend services and serverless functions using Golang.
• Work with RDS and PostgreSQL to design and optimize database schemas and queries.
• Collaborate with cross-functional teams to define, implement, and support cloud-native solutions.
• Monitor system performance, ensure reliability, and troubleshoot issues across infrastructure and services.
• Write clean, maintainable, and well-documented code and infrastructure.
• Follow best practices for infrastructure as code, security, and cloud architecture.
   

Overlap time requirements:

• Flexible schedule with ~4-hour coverage during morning client hours (PST).
• Evening 1-1 meetings with the client (GMT+1).
• Client support during releases.

Working conditions and benefits:

• Paid vacation, sick leave (without a sickness list).
• Official state holidays — 11 days considered public holidays.
• Professional growth while attending challenging projects, and the possibility of switching your role and mastering new technologies and skills with company support.
• Flexible working schedule: 8 hours per day, 40 hours per week.
• Personal Career Development Plan (CDP).
• Employee support program (Discount, Care, Health, Legal compensation).
• Paid external training, conferences, and professional certification that meet the company’s business goals.
• Internal workshops & seminars.
• Corporate library (Paper/E-books) and internal English classes.

Up4 Play — Ordinary games made extraordinary
Ми створюємо мобільні ігри, які заряджають позитивом, захоплюють із першого кліку та залишають післясмак "Вау!". У звичайних механіках ми бачимо простір для емоційних пригод — яскравих, драйвових, веселих.
 

🔹 Хто ми?
Up4 Play — продуктова команда, що створює сучасний Social Casino сервіс з нуля. Наша мета — побудувати масштабовану та якісну екосистему мобільних ігор, що поєднує найкращі практики з геймдева, аналітики та монетизації.

Що ти робитимеш:

• Очолювати бекенд-напрям: проєктування та впровадження архітектури з нуля.
• Участь у розробці архітектурних рішень і виборі технологічного стеку.
• Повна відповідальність за серверну інфраструктуру: авторизація, баланс, логіка івентів, інтеграції.
• Написання та ревʼю масштабованого, ефективного та читабельного коду.
• Оцінка задач і контроль виконання в терміни.
• Побудова та підтримка CI/CD, моніторингу, алертів.
• Співпраця з Unity-розробниками, фронтендом, аналітиками та продактами.
• Інтеграція сторонніх сервісів: платіжні системи, push-повідомлення, аналітика, реклама.
  
   

Наш ідеальний кандидат має:

• 4+ років досвіду з Go (Golang) на продакшн рівні.
• Досвід у розробці мікросервісної архітектури.
• Практичний досвід у Gaming / Casino / Social Casino.
• Досвід з highload-системами: масштабування, кешування, fault tolerance.
• Розуміння клієнт-серверної взаємодії: REST, gRPC, WebSocket.
• Навички DevOps: Docker, Kubernetes, Helm, AWS, GitHub Actions.
• Досвід роботи з MongoDB (обов’язково), бажано Redis, PostgreSQL.
• Впевнене володіння інструментами моніторингу: Prometheus, Grafana, ELK.
• Інтеграція SDK/API (платіжки, аналітика, реклама).
  
   

Буде плюсом:

• Досвід з event-driven архітектурами (Kafka/NATS/Redis Streams).
• Досвід побудови адмін-панелей або внутрішніх тулів.
  
   

Ми пропонуємо:

🔹 Повна гнучкість: працюй з дому, офісу в Києві чи Варшаві — як зручно.
🔹 Гнучкий графік: твій ритм, твої правила.
🔹 27 оплачуваних днів відпочинку на рік.
🔹 Team Challenge та корпоративні активності, які справді хочеться відвідати.
🔹 Вплив на продукт та важливість твоїх рішень.
🔹 Простір для розвитку — твої ідеї не просто слухають, а реалізовують.

Job Opening: Senior Golang Developer

Up4 Play — Ordinary games made extraordinary
We create mobile games that spark joy, captivate from the first click, and leave a lasting “Wow!” feeling. In simple mechanics, we see space for emotional adventures — vibrant, dynamic, and fun.
 

🔹 Who are we?
Up4 Play is a product team building a next-gen Social Casino platform from scratch.
Our goal is to develop a scalable and high-quality ecosystem of mobile games, combining the best practices in game development, analytics, and monetization.

What you’ll do:

• Lead the backend direction: design and implement architecture from scratch.
• Take part in architectural planning and choosing the tech stack.
• Full responsibility for backend infrastructure: auth, balance, event logic, integrations.
• Write and review scalable, clean, and efficient code.
• Estimate task complexity and ensure timely delivery.
• Build and maintain CI/CD pipelines, monitoring, alert systems.
• Collaborate with Unity, frontend teams, analysts, and product owners.
• Integrate third-party services: payments, analytics, push notifications, ads.
  
   

We're looking for:

• 4+ years of production-level experience with Go (Golang).
• Strong background in microservices architecture.
• Hands-on experience in Gaming / Casino / Social Casino domain.
• Experience with highload systems: scaling, caching, fault tolerance.
• Client-server development expertise: REST, gRPC, WebSockets.
• DevOps proficiency: Docker, Kubernetes, Helm, AWS, GitHub Actions.
• Solid experience with MongoDB (required), Redis and PostgreSQL (nice to have).
• Familiarity with monitoring tools: Prometheus, Grafana, ELK stack.
• SDK/API integration experience: payments, analytics, ads.
   

Nice to have:

• Event-driven architecture experience (Kafka/NATS/Redis Streams).
• Admin panel/internal tool development experience.
  
   

We offer:

🔹 Total flexibility: work remotely, from our Kyiv or Warsaw office — or mix both.
🔹 Flexible schedule: your rhythm, your rules.
🔹 27 paid vacation days per year.
🔹 Team Challenges and corporate activities worth attending.
🔹 Real product impact and ownership of technical decisions.
🔹 Room for growth — your ideas will be heard and implemented.

🔸 Join Up4 Play and help us redefine mobile gaming!

Payment platform seeking an experienced Golang Engineer with a strong background in building scalable and high-performance applications. The ideal candidate will have a minimum of 3 years of experience in Golang programming and a solid understanding of various technologies such as PostgreSQL, Kafka, RabbitMQ, Redis, Docker, gRPC, Jaeger, and RESTful APIs. You will play a key role in designing, developing, and maintaining complex backend systems that power our financial applications.

Responsibilities:
 

• Design, develop, and maintain robust and scalable backend systems using Golang
• Collaborate with cross-functional teams to gather and define requirements for new features and improvements 
• Design and implement data models, database schemas, and queries for efficient data storage and retrieval using PostgreSQL, adhering to strict security and compliance standards
• Integrate messaging systems like Kafka and RabbitMQ to enable secure and asynchronous communication between financial components
• Utilize Redis for caching and optimizing data access in performance-critical fintech scenarios
• Containerize applications using Docker to ensure seamless deployment, scalability, and reproducibility of fintech systems
• Design and implement high-performance gRPC APIs to support real-time financial transactions and data exchange
• Develop secure and compliant RESTful APIs for external fintech services, adhering to industry regulations and best practices
• Leverage Jaeger for distributed tracing and observability to monitor and improve the performance of fintech applications
• Contribute to team growth through sharing best practices and engaging in professional development activities
• Write comprehensive unit and integration tests, perform thorough code reviews, and actively participate in debugging and troubleshooting of fintech-related challenges
• Stay abreast of industry trends, emerging technologies, and innovations, advocating for the adoption of relevant tools and practices.
  
  Requirements:
   
• Minimum of 3 years of proven experience as a Golang Engineer
• Proficiency in Golang programming and design patterns, with an in-depth understanding of language internals
• Solid knowledge of relational databases, particularly PostgreSQL, including advanced schema design, query optimization
• Experience with message brokers like Kafka and RabbitMQ, including intricate message queuing and publish-subscribe patterns 
• Familiarity with advanced caching techniques and tools, with a focus on Redis
• Experience in Docker and Kubernetes for fintech system reliability and scalability
• Skillful in developing high-throughput gRPC APIs, tailored for real-time financial data exchange
• Track record of designing, building, and maintaining secure and compliant RESTful APIs
• Experienced in version control (e.g., Git), testing methodologies, and code review processes within fintech development workflows
• Exceptional problem-solving skills, coupled with the ability to excel in a collaborative team environment
• Excellent communication skills, both written and verbal
  
  Benefits: 
   
• A chance to grow in the fintech industry.
• The best team to work with.
• Paid time off, sick leave, and public holidays according to Barcelona location.
• Healthcare benefits/medical insurance after the probation period.
• Educational budget and additional benefits after the probation period.

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 is a leading SaaS company offering pricing optimization solutions for e-commerce businesses. Its advanced technology utilizes big data, machine learning, and AI to assist customers in optimizing their pricing strategies and maximizing their profits.

About the Role: 

As a Senior Fullstack Engineer in the Core Team, you will be responsible for developing end-to-end features that directly impact global e-commerce pricing. You’ll work on a modern tech stack, solve real-world scaling challenges, and contribute to a product used by major international retailers.

The ideal candidate has strong experience with Golang on the backend, and solid frontend experience with one modern framework — such as React, Next.js, Vue.js, or Angular. They thrive in a product-oriented environment and are comfortable taking ownership of end-to-end feature development.

Key Responsibilities: 

• Design and develop new features and applications for our platform. 
• Build and maintain efficient, reusable, and reliable code. 
• Collaborate with product and custom-facing teams to identify, prioritize, and execute tasks. 
•  Ensure the best possible performance, quality, and responsiveness of the applications. 
• Continuously research and evaluate new technologies to improve our platform and keep up with the latest trends.
• Troubleshoot and debug issues reported by users 
• Write clean, well-documented code and ensure proper testing and deployment.
• Participate in code reviews and contribute to the overall code quality. 

Required Competence and Skills:

• 5+ years of commercial full-stack development experience
• Strong experience with Golang 
• Proficiency with at least one modern frontend framework: React (preferred), Next.js, Vue.js, or Angular (latest versions)
• Good understanding of CSS as well as vanilla Javascript and front-end design.
• Experience with cloud platforms (AWS preferred)
• Experience building/scaling SaaS projects and microservices architecture
• Familiarity with Kubernetes and Docker for containerization and container orchestration
• Experience with relational and NoSQL databases (PostgreSQL, Redis)
• Strong analytical and problem-solving skills
• Excellent communication and interpersonal skills
• Ability to work in a fast-paced environment and handle multiple tasks simultaneously
• Proficient in English.

Nice-to have:

• Experience with Ruby or Python
• Experience with pub-sub systems and queues: RabbitMQ, Kafka, SQS, etc.
• Hands-on experience with Elasticsearch or similar datastores
• Experience with Spark (PySpark / Scala) or similar big-data tooling

Why Us?

- We utilize a remote working model, providing a powerful workstation and co-working space of your choice in case you need it 

- We offer a highly competitive package  

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

- We prioritize the professional growth and well-being of our team members. Hence, we organize various social events throughout the year to foster connections and promote wellness

Hello everyone! We are looking for a Senior Go Engineer to join our team.

What is the project idea?
A digital platform that bridges service providers, like personal trainers, with product suppliers, enabling them to recommend and sell relevant items directly to their clients. It streamlines the process of offering personalized products within service-based businesses, creating a new revenue stream and enhancing customer experience.

What is the team size and structure?
Project Manager, Senior and Middle Golang Developers, QA, DevOps, Senior iOS/Android Engineer.

How many stages of the interview are there?
Interview with the Recruiter – up to 30 min.;
Technical interview with Ralabs – up to 1 hour.

Requirement

Hard skills

• Go Programming & Architecture Leadership: 5+ years Go development with proven experience designing and scaling microservices architectures, advanced concurrency patterns, and distributed systems expertis;
• API Strategy & Design: Expert-level REST and GraphQL skills, including federation architecture, schema governance, performance optimization, and mentoring teams on API best practices;
• Database Architecture & Optimization: Advanced SQL database design, query performance tuning, caching architectures (Redis clustering), and database optimization at scale;
• Security Architecture: Design and implement comprehensive security frameworks including OAuth 2.0, JWT strategies, advanced RBAC systems, and API security governance (rate limiting, threat protection);
• Multi-Tenant System Design: Architect complex multi-tenant platforms with advanced isolation strategies, tenant-specific scaling, and performance optimization across thousands of tenants;
• Event-Driven Architecture Leadership: Design event sourcing systems, implement CQRS patterns, architect message queue infrastructures, and build real-time communication systems;
• Integration Architecture: Lead complex third-party integrations (payment systems, logistics APIs), design resilient integration patterns, and architect service communication across multiple domains;
• Testing Strategy & Quality Leadership: Establish testing frameworks, implement comprehensive testing strategies, performance benchmarking, and mentor teams on testing best practices;
• Infrastructure & DevOps Leadership: Design containerized deployment strategies, Kubernetes cluster management, CI/CD pipeline architecture, and production infrastructure scaling;
• Monitoring & System Reliability: Implement comprehensive observability strategies, design alerting systems, establish SLAs/SLOs, and create performance monitoring dashboards;

• Upper-Intermediate level of English.

   

Soft Skills

• Technical Leadership & Mentorship: 6+ years backend development, 3+ years in senior roles, proven track record mentoring junior engineers and leading technical initiatives in complex e-commerce environments;
• Architectural Decision Making: Strong strategic thinking for system design trade-offs, technology evaluation, and long-term technical roadmap planning with business impact consideration;
• Cross-Team Leadership: Lead technical discussions across engineering, product, and business teams, drive API adoption strategies, and facilitate technical decision-making processes;
• Communication & Stakeholder Management: Excellent technical communication skills for architecture documentation, stakeholder presentations, and translating technical concepts to non-technical audiences;
• Innovation & Continuous Improvement: Proactive approach to technology evaluation, process optimization, team development, and driving engineering excellence initiatives across the organization.

Responsibilities

• Lead design, development, and scaling of backend microservices and APIs;
• Mentor and guide junior and middle engineers, fostering technical growth and best practices;
• Architect secure, high-performance, and scalable systems with attention to multi-tenant requirements;
• Oversee third-party integrations and ensure system reliability and observability;
• Define and implement testing strategies and infrastructure improvements;
• Collaborate with cross-functional teams (product, engineering, business) to align technical direction with company goals;
• Manage technical documentation, presentations, and stakeholder communication.

We’re building a complex AI-powered SaaS platform with a strong focus on automation, data processing, and performance. The product handles sensitive user data, real-time interactions, and includes modular architecture built with scalability in mind.

You’ll join an experienced team of engineers working on challenging backend tasks — from building internal APIs to scaling data pipelines and integrating AI models.

Tech Stack You’ll Work With:

• Golang (core language)
• PostgreSQL, Redis
• GORM, Atlas
• REST & background workers
• AWS (S3, Pinpoint, Lambda, etc.)
• Fiber
• WebSockets
• Docker
• Twilio / Infobip integration
• OpenTelemetry, Sentry
• PDF & Excel generators (e.g. wkhtmltopdf, excelize)

We Expect You To:

• Have 3+ years of experience with Go (or very strong knowledge for Middle+)
• Understand backend architecture and async processing
• Be confident working with PostgreSQL and Redis
• Know how to write clean, tested, and efficient Go code
• Experience with REST APIs, message queues (cron/worker jobs)
• Be familiar with Docker and AWS (at least core services)

• Any background in AI-powered platforms or processing dynamic user input

   

What We Offer:

• Work on a meaningful & technically interesting product
• Friendly and mature engineering culture
• Fully remote setup and flexible schedule
• Stable long-term project with a clear vision

Role Overview:

The Software Engineer will be responsible for developing, maintaining, and optimizing a financial platform based on a microservices architecture. This role demands expertise in backend development, system architecture, and a strong understanding of workflows in the financial domain, including the use of MongoDB and Kafka.

Required Technical Skills:

1. Programming Languages:
    
   • Proficiency in Go (Golang).
   • Familiarity with scripting languages like Shell scripting and experience working with JSON.
2. Microservices Architecture:
    
   • Expertise in designing and implementing scalable microservices.
   • Hands-on experience with containerization and orchestration tools, such as Docker and Kubernetes.
   • Strong knowledge of Kafka, including producer/consumer patterns, message partitioning, and offset management.
3. API Development:
    
   • Proven experience in building RESTful APIs and using Swagger/OpenAPI specifications for API documentation.
   • Ability to implement robust authentication and authorization mechanisms.
4. Data Management:
    
   • Strong experience with MongoDB, including schema design, query optimization, and indexing strategies.
   • Familiarity with both relational and non-relational databases.
   • Experience in database optimization and efficient query design.
5. Testing and CI/CD:
    
   • Proficiency in writing unit and integration tests to ensure high-quality code.
   • Familiarity with CI/CD pipelines and tools like Jenkins, GitHub Actions, or GitLab CI.
6. Domain Expertise:
    
   • Understanding of financial operations, including transaction processing, ledger management, and payment gateways.
   • Knowledge of workflows such as credit limit management and penalty processing.
7. DevOps and System Administration:
    
   • Experience with Docker, Docker Compose, and infrastructure-as-code tools.
   • Knowledge of monitoring tools like Grafana.

Soft Skills:

• Strong problem-solving and debugging abilities.
• Effective collaboration with cross-functional teams, including QA, DevOps, and product management.
• Excellent communication skills to articulate technical decisions and designs.

Key Responsibilities:

1. Develop and maintain microservices supporting the financial platform’s core functionalities.
2. Design and implement solutions leveraging MongoDB and Kafka to handle high-volume, real-time data processing.
3. Contribute to testing strategies, ensuring comprehensive test coverage for business-critical processes.
4. Optimize the existing codebase for performance, scalability, and reliability.
5. Document APIs and ensure compliance with industry standards.
6. Troubleshoot and resolve production issues promptly.
7. Implement and maintain CI/CD pipelines for seamless deployment processes.

Preferred Qualifications:

• Experience in fintech or the financial services industry.
• Deep understanding of MongoDB replication, sharding, and aggregation framework.
• Advanced knowledge of Kafka, including cluster management and stream processing.
• Hands-on experience with Go-specific frameworks and libraries.

We are seeking a highly experienced Go Engineer to design and implement high-performance services, support architectural modernization efforts, and optimize performance-critical parts of our platform. You will work alongside our in-house team and Java engineers to build fast paths and decouple high-load services.
 

Key Responsibilities:

• Identify and re-implement backend hotspots as high-efficiency Go microservices;
• Collaborate on architectural modernization, such as migration to WebSocket-based async flows;
• Design and build scalable, highly concurrent services with gRPC or HTTP;
• Contribute to resilience improvements across the service landscape.
   

Required Skills:

• Expert in Go (Golang), 6-7+ years of experience;
• Experience in writing concurrent, low-latency code and optimizing system throughput;
• Proficient in microservice design, gRPC, REST, WebSockets;
• Knowledge of message brokers (e.g., Artemis, NATS);
• Experience working with PostgreSQL, Kubernetes, service mesh (e.g., Istio);
• Familiarity with Java would be a plus.

We are seeking a highly skilled Senior Golang Engineer with at least 7 years of professional experience in backend development, including demonstrable experience working with U.S.-based companies or clients. The ideal candidate is fluent in English, available during U.S. business hours, and comfortable working in a fast-paced, high-impact environment.

You will work on mission-critical systems, contributing to the architecture, development, and deployment of Go-based microservices in a modern cloud-native environment. This role requires strong problem-solving abilities, a deep understanding of Golang, and experience delivering production-grade software in fast-paced, collaborative environments.

Minimum Requirements 

• Design, develop, and maintain backend services and microservices using Golang.
• Strong software engineering skills and a passion for one of the areas above.
• Ability to write high quality code (in programming languages like Go, Java, C/C++ etc)
• 7-12+ years of professional hands-on software development experience, able to write well-factored algorithms and have experience with commonly used data structure and algorithms
• Hands-on experience contributing to or building large scale distributed systems
• Strong collaboration skills, can work across workstreams within your team and contribute to your peers’ success
• Customer obsession, ability to articulate and represent customer experience in various forums to drive the right outcome
• Have the ability to thrive on a high level of autonomy, responsibility, and think of yourself as entrepreneurial

Preferred Qualifications

• Experience optimizing the end to end performance of distributed systems
• Focuses on the needs of our users, both internal and external
• Holds yourself and others to a high bar when working with production

We are seeking a highly experienced Go Engineer to design and implement high-performance services, support architectural modernization efforts, and optimize performance-critical parts of our platform. You will work alongside our in-house team and Java engineers to build fast paths and decouple high-load services.
 

Key Responsibilities:

• Identify and re-implement backend hotspots as high-efficiency Go microservices;
• Collaborate on architectural modernization, such as migration to WebSocket-based async flows;
• Design and build scalable, highly concurrent services with gRPC or HTTP;
• Contribute to resilience improvements across the service landscape.
  
   

Required Skills:

• Expert in Go (Golang), 8+ years of experience;
• Experience in writing concurrent, low-latency code and optimizing system throughput;
• Proficient in microservice design, gRPC, REST, WebSockets;
• Knowledge of message brokers (e.g., Artemis, NATS);
• Experience working with PostgreSQL, Kubernetes, service mesh (e.g., Istio);
• Familiarity with Java would be a plus.

• Level: Senior
• Type: Full-time/Remote
• Working Time Zone: CET
• Language: Advanced English

We are on the lookout for a Senior Go Developer to join an international tech team building the future of seamless travel. If you're passionate about scalable systems, cloud platforms, and simplifying complex data, this role is for you.

💼 Project & Company Overview

Our client is transforming how people travel by integrating trains, buses, ferries, and flights into a unified global booking system. With a customer base spanning Europe, the US, and Canada, and partnerships with over 1000 transport providers across 39 countries, the company simplifies trip planning by offering transparent pricing and end-to-end booking.

You will join the Partnerships tribe—a core product team responsible for Search and Booking APIs and other sub-products tailored to large mobility partners. The development phase is active, and you’ll be working directly with the client’s in-house team.

The company has 400+ employees from over 50 countries, united by the mission of creating a unified tool for global travelers.

🧩 Responsibilities

• Design and build cloud-native, high-performing, and scalable applications in Go
• Maintain and improve existing services and infrastructure
• Develop reliable systems that integrate with diverse internal and external data sources
• Rapidly test and iterate on features in collaboration with your team
• Own performance, availability, and reliability of core systems
• Collaborate across teams to tackle complex technical challenges
• Mentor junior developers and contribute to team growth

💡 Requirements
Must-Have:

• Strong experience with Go (or solid backend experience and willingness to learn Go)
• Solid understanding of software design and Continuous Delivery principles
• Hands-on experience with cloud platforms and containerization (Docker, Kubernetes)
• Passion for clean code, software craftsmanship, and agile methodologies

Nice-to-Have:

• Experience with Couchbase, RESTful APIs, Jenkins, message queues

🤝 Soft Skills

• Excellent communicator, able to work with both technical and non-technical stakeholders
• Self-motivated, proactive, and organized
• Strategic thinker with strong analytical skills

We are looking for a Middle Go Engineer to join our team.

What is the project idea?
A digital platform that bridges service providers, like personal trainers, with product suppliers, enabling them to recommend and sell relevant items directly to their clients. It streamlines the process of offering personalized products within service-based businesses, creating a new revenue stream and enhancing customer experience.

What is the team size and structure?
Project Manager, Senior and Middle Golang Developers, QA, DevOps, Senior iOS/Android Engineer.

How many stages of the interview are there?
Interview with the Recruiter – up to 30 min.;
Technical interview with Ralabs – up to 1 hour.

Requirements and responsibilities
Hard skills

• 4+ years backend development experience;
• 2+ years experience with multi-service architectures;
• Preferably experience in e-commerce or marketplace environments;
• Go Programming & Microservices: 3+ years Go development with microservices architecture, concurrency patterns, and distributed systems knowledge;
• API Development: Strong REST and GraphQL expertise including schema design, resolvers, federation, and Go libraries (gqlgen, graphql-go);
• Database & Performance: Proficiency with SQL and NoSQL databases (PostgreSQL, MongoDB), query optimization, caching strategies (Redis), and GraphQL-specific optimizations (DataLoader, query caching);
• Event-Driven Systems: Experience with message queues (Kafka, RabbitMQ), event sourcing, CQRS patterns;
• Third-Party Integrations: Payment processing (Stripe), external APIs, webhook handling, and microservices integration;
• Testing & Quality: Unit and integration testing, TDD practices, performance and load testing experience;
• DevOps & Infrastructure: Docker containerization, Kubernetes orchestration, CI/CD pipelines, and production GraphQL deployment;
• Upper-Intermediate level of English.
   

Soft Skills

• Strong analytical skills for troubleshooting complex distributed systems and performance optimization;
• Ability to work effectively with frontend teams on GraphQL schema design and collaborate across engineering teams;
• Experience working in agile environments with collaborative development practices and a continuous improvement mindset.
   

Responsibilities

• Design, develop, and maintain backend services using Go, ensuring high performance and scalability;
• Implement feature endpoints and business logic under senior guidance;
  Work with databases to build efficient data storage and caching solutions;
• Contribute to CI/CD pipelines (e.g., GitHub Actions), write unit and integration tests, and ensure code quality;
• Build and maintain connectors to Patchworks and Stripe webhooks;
• Assist with caching layers and performance optimizations as directed.

Softcery is a small, focused team building AI-driven B2B software solutions. We work closely with clients in the US and UK to launch AI voice agents and develop custom B2B platforms. Most of our work involves advanced R&D and complex problem-solving.

At Softcery, we value trust, initiative, and healthy autonomy. We work honestly and transparently, support each other, and don't create unnecessary barriers in our processes.
 

We’re looking for a Golang Developer to join our team and help bring even more value to the projects we create.
 

About the project: This is a long-term project for a US-based client who is developing a product aimed at reducing customer drop-off at checkout and increasing conversions through a fast and universal checkout process.

Tech stack: Go, PostgreSQL, MongoDB, AWS, React + Node.js, WordPress.

 What You'll Do:

• Maintain and support backend systems — ensure stability, monitor performance, and resolve incidents promptly.
• Develop new features — implement functionality that directly impacts checkout optimization and user experience.
• Improve and refactor existing services — enhance performance, reliability, and scalability of the codebase.
• Collaborate with the development team — work closely with Tech Lead, 2 Go Devs, Full Stack Dev, WordPress Dev, and QA engineer to deliver integrated solutions.
• Participate in technical calls with the client — clarify requirements, present progress, and discuss possible solutions.
• Troubleshoot complex issues — analyze system behavior, identify root causes, and implement fixes.

What We're Looking For:

• 1+ year of commercial experience with Go — you write prod code, know the language's features, typical architecture, and standard libraries.
• Strong knowledge of databases (PostgreSQL, MongoDB) — you know how to design efficient schemas and queries.
• Experience with AWS and web servers — you understand how to deploy, monitor, and optimize services in cloud environments.
• Experience with E-commerce platforms (Shopify, BigCommerce).
• Experience with payment integration (PayPal, Stripe, Clarna, CyberSource, USAePay, Converge, Braintree).
• Solid problem-solving skills — you can tackle complex, multi-component issues systematically.
• Experience working on large, distributed systems — you know how different parts of the architecture interact.
• Fluency in Ukrainian and English (Upper-Intermediate+) — because communicating with customers is part of the job.

Nice to nave:

• Knowledge of React, WordPress, Node.js.
• Understanding of Clean Code and Clean Architecture principles.

 What We Offer:

• Structured onboarding & dedicated support — you’ll get a clear onboarding plan, documented workflows, and a team that’s got your back.
• Flexible remote schedule — work from wherever and whenever you’re most productive.
• Learning budget — we cover books, courses, English lessons, and AI tools for your professional growth.
• Full accounting support — so you can focus on the work, not the paperwork.
• Time off — 20 paid vacation days, 12 sick days, 2 paid period leave days/month (for women), and your birthday off.
• IT Cluster membership — access to professional events and networking opportunities in the local tech community.

🔁 Hiring Process: Recruiter Interview → Tech Interview → Test Task → Final Interview → Reference Check.
 

If you care about who you work with, what you create, and how it affects the outcome, we will definitely be on the same page. We’re excited to meet you 👋