Jobs

We are looking for medium-senior developer. Besides Go, Javascript and Python are bonuses but not required. The project will be to develop on an auction based system. Features will be to adjust bidding logic and data flow routing within the platform. The main team is in San Diego so working during PST hours is preferred. 

Requirements:

- candidates need to be experienced in Go.

- experience in Javascript and Python will be plus

- ready to work during PST hours.

We offer:

- Attractive financial package

- Paid vacation, holidays and sick leaves

- Challenging projects

- Professional & career growth

- Great atmosphere in a friendly small team

- Flexible working hours

Requirements: 
— Golang
—Apache Kafka
—NoSQL: Elastic, MongoDB,Redis
—А Bachelor’s Degree in Computer Science or a related field of study, or some other similar level of educational background, is preferred.

Responsibilities:
—Build scalable, highly available, robust systems and ensure their continuous delivery
—Work as part of a cluster and within a cross-functional team
—Take part in the whole feature development process — from the inception of ideas to deployment and maintenance
—We suggest submitting a small portfolio, or at least a code sample as proof of this experience
—Able to log time spent against the correct tickets and help maintain a strong degree of team efficiency.
—Prepare a development plan, defend it, code it, ship it, own it!

We are looking for a skilled Blockchain Developer proficient in Golang and experienced with the Cosmos SDK to join our dynamic team.

About the project
Our project involves creating a blockchain using a triple token model based on the Cosmos SDK, with a primary focus on the validator layer. The platform will launch with an initial technology offering, which we refer to as a “mining” unit for marketing purposes only; no actual mining will take place. Instead, we will use a Proof-of-Stake (PoS) consensus algorithm. Additionally, the platform will provide the right to run a node.

Responsibilities:
— Build and maintain blockchain infrastructure using the Cosmos SDK
— Deploy production-ready Cosmos mainnet solutions
— Write efficient, maintainable code
— Apply deep knowledge of blockchain principles and DeFi primitives
— Implement concepts from blockchain whitepapers into practical solutions
— Work with cross-functional teams to deliver high-quality blockchain solutions
— Stay updated with blockchain trends and improve development processes
— Provide mentorship to less experienced developers
— Foster a collaborative and innovative development environment

Requirements:
— 4+ years of Golang experience
— Perfect understanding of Go syntax and internals
— Deep understanding and experience in designing and implementing distributed systems and blockchains, deep understanding of underlying principles and DeFi primitives
— Experience launching a Cosmos mainnet
— Experience with Cosmos SDK and it’s modular system
— Capable of interpreting whitepapers and crafting clear, comprehensive technical specifications
— Ability to debug and optimize code and automate routine tasks
— English: intermediate/upper-intermediate

Will be a plus:
— Experience in development and deployment of the initial version of the node (non-Cosmos) with core functionalities, including transaction processing, block creation, and node decentralization

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

Cabina.AI is a dynamic startup building a cutting-edge platform for interacting with and managing multiple AI models. We're seeking a skilled and passionate Go developer to join our strong team and contribute to the development of our microservice architecture. This is a unique opportunity to work on challenging and engaging tasks in a fast-paced, collaborative environment.
 

About Cabina.AI:

We're developing a universal workspace that simplifies the use and integration of AI. Our platform provides access to a wide range of AI models, enabling users to perform quick actions, train custom models, automate workflows, and manage their AI resources effectively. We're committed to building a robust and scalable platform using a microservice architecture based on Go.
 

About the Role:

As a Go developer at Cabina.AI, you'll play a key role in designing, developing, and maintaining our core microservices. You'll collaborate closely with other engineers, product managers, and designers to deliver high-quality features and ensure the performance and scalability of our platform. You'll have the opportunity to work with cutting-edge technologies and contribute to the growth and success of a promising startup.
 

Responsibilities:

• Design, develop, and test new microservices in Go.
• Maintain and improve existing microservices and related infrastructure.
• Collaborate with other engineers on code reviews and design discussions.
• Contribute to the overall architecture and design of the platform.
• Work with product managers to understand requirements and translate them into technical solutions.
• Participate in agile development processes.

Qualifications:

• Strong proficiency in Go programming language.
• Experience with microservice architecture and development.
• Familiarity with containerization technologies (e.g., Docker, Kubernetes).
• Understanding of RESTful API design principles.
• Experience with databases (e.g., PostgreSQL, MySQL).
• Excellent communication and collaboration skills.
• Passion for learning and staying up-to-date with the latest technologies.

Bonus Points:

• Experience with gRPC.
• Familiarity with message queues (e.g., Kafka, RabbitMQ).
• Experience with cloud platforms (e.g., AWS, Google Cloud).
• Contributions to open-source projects.
   

What We Offer:

• Competitive salary and equity options.
• Opportunity to work on challenging and impactful projects.
• Collaborative and supportive work environment.
• Flexible work arrangements.
• Professional development opportunities.
• Be a part of a growing and innovative startup.

PIN-UP Global is an international holding specializing in the development and implementation of advanced technologies, B2B solutions and innovative products for the iGaming industry. We provide certification and licensing of our products, providing customers and partners of the holding with high-quality and reliable solutions.

We are looking for Middle and Senior Golang Developers to join our teams!

Requirements:

- 3+ years of experience with Go programming language.

- Proven ability to design and implement scalable and reliable software solutions.

- Strong understanding of event-driven architecture.

- Experience with containerization and orchestration tools like Docker and Kubernetes.

- Hands-on experience with RDBMS and/or NoSQL databases

- Strong understanding of event-driven architecture  + hands-on experience with Event Brokers

- Experience with observability - implementing logs, metrics, and tracing

- Proficiency in working with cloud platforms such as Google Cloud Platform (GCP) and/or AWS.

- Proficient in using Git, GitLab, and GitLab CI for source control and continuous integration.

- Excellent problem-solving abilities.

- Strong time management and organizational skills to handle multiple tasks effectively.

- Upper-intermediate level of English, both written and verbal.

Nice to have:

- Familiarity with the Twelve-Factor App methodology.

- Knowledge of Cloud Events and GitOps practices.

Responsibilities:

- Develop high-performance, testable, and maintainable code to deliver new functionality.

- Conduct code reviews to ensure quality, maintain standards, and share knowledge across the team.

- Integrate industry-leading third-party services into the platform.

- Propose and implement innovative technical initiatives to improve systems and processes.

Why Join Us:

- Flexible remote or hybrid working format based on your location.

- No Time Trackers: We value trust and focus on results.

- Career growth, professional development, regular performance reviews.

Hiring Steps: HR Interview > Technical Interview (no test task, no live-coding needed)  > Reference check > Offer

Our benefits to you:

🍀 An exciting and challenging job in a fast-growing holding, 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
🗣️ Free internal English courses
🦄 Multiple internal activities: online platform for employees with quests, gamification, presents and news, PIN-UP clubs for movie / book / pets lovers and more
🎳 Other benefits could be added based on your location

Ubidex is seeking a highly skilled Backend Software Engineer to join our team and contribute to the development of a large-scale SaaS platform. In this role, you will be responsible for designing and implementing architectural solutions to ensure high performance and efficiency in our platform for retargeting advertising campaigns and analytics.

Required Skills and Experience:

• 5+ years of experience in backend development in total;
• 3+ years of experience with Go development; capable of building and maintaining high-load backend systems;
• Experience with Linux (Debian / Ubuntu);
• Solid understanding of Docker and container orchestration systems (k8s, swarm);
• Experience with PostgreSQL;
• Experience with In-memory storage (Redis, Aerospike);
• Experience with distributed systems and high-load services;
• Experience with Microservices (API, patterns, background processing);
• Experience in developing REST API;
• Solid understanding of KISS, DRY, SOLID principles and design patterns;
• Practical experience with event-driven development patterns;
• Experience with Ansible and CI/CD tools like Gitlab CI;
• Experience with monitoring and logging tools and performance tuning;
• Fast learner with a strong desire to continually acquire new knowledge;

Nice to have:

• Experience with AdTech vertical;
• Experience with ClickHouse;
• Experience with NodeJs;
• Experience with designing GraphQL and gRPC API;
• Experience with message brokers like RabbitMQ, Apache Kafka, NATs;
• Experience with scripting languages like Python, Bash;

Responsibilities:

• Build high-load (500k+ RPS) distributed system using Golang;
• Design and implement backend features from conception through to deployment;
• Analyze system performance metrics and bottlenecks to fine-tune services for maximum efficiency;
• Work closely with team to deliver high-quality features and resolve issues;
• Review code and provide feedback to ensure best practices (e.g., style guidelines, accuracy, testability, and efficiency);
• Define and implement testing strategies, including unit testing, integration testing, and performance testing, to ensure the reliability of the system;
• Stay updated on the latest technologies and tools relevant to the project, and big data processing, making informed decisions on technology adoption
• Be a part of the critical path in a fast-growing project's development and delivery processes.

Product stack:

• On-premise: Docker, Swarm
• Programming languages: Golang, JavaScript / Node.js
• DB: PostgreSQL, Redis, ClickHouse, Aerospike, Mongo
• Monitoring: Prometheus, Loki, Grafana
• CI/CD: GitLab, Ansible
• Storage: S3(minio)
• Web: nginx, traefik, cloudflare

Who we are:

Selesa offers IT outsourcing, specialist out-staffing, and project management services to enhance business operations. We focus on providing skilled professionals for IT needs, including development, security consulting, and business development. Selesa also manages sales, account management, and human resources to support company growth. Our services are known for efficiency, quality, and strong communication, making us a trusted partner for businesses looking to streamline and secure their IT infrastructure. Originated in Vilnius, Lithuania, we cater to global clients.

Who we are looking for:

Seeking a skilled Backend Developer proficient in Golang to join our fast-paced team. If you excel in backend technologies like PostgreSQL, Kubernetes, Redis, RabbitMQ, gRPC, and Jaeger, your next challenge awaits!

What you’ll be doing:

• Extend, maintain, and optimize backend applications for games.
• Collaborate with other teams for integration and technical designs/documentation.
• Develop and maintain backend services using Golang.
• Manage database operations with PostgreSQL.
• Handle deployment and scaling of containerized applications using Kubernetes.
• Implement caching mechanisms with Redis for enhanced system performance.
• Configure and manage RabbitMQ for seamless inter-service communication.
• Continuously improve code quality, performance, and application responsiveness.

Who you are and whom we’re seeking:

• Experience in slot game creation is a MUST
• Experience with gRPC is desirable, simplifying the creation of distributed applications.
• Familiarity with Jaeger for monitoring and troubleshooting microservices-based systems is beneficial.
• Strong team player with a problem-solving mindset and excellent debugging skills.
• Committed to producing high-quality code.

Please answer the following questions when submitting your application:

1. How many years of experience do you have as a Backend Developer? Additionally, how many years of experience do you have with Golang?
2. Please provide links to the demo slot games you’ve worked on.
3. Please describe examples and your knowledge and experience with all the listed above stack technologies used (PostgreSQL, Kubernetes, Redis, RabbitMQ, gRPC, and Jaeger).
4. Would you agree to do a test task before an interview? This would allow us to evaluate your skills and make an appropriate financial offer to you.
5. What are your Monthly salary expectations for a long-term, full-time position (if we consider 40 hours a week)?

   Join Our Team & Earn Exciting Bonuses! 
As a special incentive, we’re offering a Welcome Bonus of $1,000 USD for new hires. Plus, if you refer a friend who gets hired, you’ll receive a Referral Bonus of $400 USD!

 Our client's company was founded in 2014 with a simple yet ambitious mission: deliver a powerful solution that transforms complexity into a strategic advantage, offering maximum flexibility and observability for your AI deployments. The client’s vision is to allow businesses to have complete control over their machine learning workflows, enabling innovation and uncovering new opportunities to deploy impactful, data-driven solutions. We strive to build a world where AI is harnessed responsibly and ethically by both enterprise organizations and the wider open source community.

   Machine learning will soon be at the core of every connected business, so we’re seeking talented individuals to drive our mission forward to deliver industry-leading machine learning deployment and continue to make our mark in the MLOps space. 

   The client operates on the cutting edge of technology, in an agile environment that is evolving as they scale, enabling unique opportunities to grow and develop your career as part of the team and help shape the future with MLOps.

   You will be working on our next generation data-centric MLOps platform that allows users to scale to 1000s of models in production and build powerful data-driven ML inference pipelines using Kafka. This is an exciting opportunity to work on a new project and have an impact on many technical aspects of the system as they are developed.

About the role

• Help design, build and extend MLOps platform, contributing to improved reliability, scalability and performance as well as next-generation features.
• Engage in technical discussions about the architecture of the system and the different tradeoffs made when picking particular solutions.
• Help manage internal development, demo and test infrastructure, improving productivity for everyone in the team.
• Respond to customer questions and queries as they arise, developing and integrating requested features within the existing codebase.
• Reduce technical debt by maintaining the codebase at a high quality level: periodic 3rd party dependencies upgrades, automated tests and working CI/CD pipelines.

Essential skills

• A degree or higher level academic background in a scientific or engineering subject or relevant equivalent experience 
• Experience/involvement in architecting, implementing and debugging complex systems, from initial design to completion.
• Understanding of distributed systems and the challenges associated with microservices architectures.
• Experience in profiling, identifying and fixing system bottlenecks at the component and system level.
• At least 7+ years of experience in industry with a track record as backend (Golang) engineer .
• Strong working knowledge of Golang.
• Experience in building applications using Kafka.

• Experience with Kubernetes and the ecosystem of Cloud Native tools.

   

  Bonus skills

• Familiarity with Google Cloud Platform / AWS / Azure.
• Familiarity with Operator Pattern with Kubebuilder or Operator SDK.
• Contributions to open source projects.
• A broad understanding of data science and machine learning or the willingness to learn about it.
• Working knowledge of Python.

PIN-UP Global is an international holding specializing in the development and implementation of advanced technologies, B2B solutions, and innovative products for the iGaming industry. We provide certification and licensing of our products, providing customers and partners of the holding with high-quality and reliable solutions.

We are looking for a Middle Go Engineer to join our teams! 

Requirements:

• 3+ years of experience with Go programming language.
• Proven ability to design and implement scalable and reliable software solutions.
• Strong understanding of event-driven architecture.
• Experience with containerization and orchestration tools like Docker and Kubernetes.
• Hands-on experience with RDBMS and/or NoSQL databases.
• Strong understanding of event-driven architecture + hands-on experience with Event Brokers.
• Experience with observability — implementing logs, metrics, and tracing.
• Proficiency in working with cloud platforms such as Google Cloud Platform (GCP) and/or AWS.
• Proficient in using Git, GitLab, and GitLab CI for source control and continuous integration.
• Excellent problem-solving abilities.
• Strong time management and organizational skills to handle multiple tasks effectively.
• Upper-intermediate level of English, both written and verbal.
   

Nice to have:

• Familiarity with the Twelve-Factor App methodology.
• Knowledge of Cloud Events and GitOps practices.
   

Responsibilities:

• Develop high-performance, testable, and maintainable code to deliver new functionality.
• Conduct code reviews to ensure quality, maintain standards, and share knowledge across the team.
• Integrate industry-leading third-party services into the platform.
• Mentor team members and actively share knowledge to foster growth and collaboration.
• Propose and implement innovative technical initiatives to improve systems and processes.
   

Why Join Us:

• Flexible remote or hybrid working format based on your location.
• No Time Trackers: We value trust and focus on results.
• Career growth, professional development, and regular performance reviews.
   

Hiring Steps: HR Interview > Technical Interview (no test task, no live-coding needed) > Reference check > Offer
 

Our benefits to you:
🍀Great working atmosphere with a passionate multicultural team of experts and leaders in Development, Engineering, Architecture, Management, Operations, Marketing, fostering a friendly culture and a success-driven mindset
🏖 25+ paid vacation/off days along with paid sick leave
🧑‍💻 Laptop and all necessary equipment provided according to holding standards
💵 Referral program — get the bonus & enjoy cooperation with your colleagues
👨‍⚕ Comprehensive medical insurance for your health and well-being
🦄 Multiple internal activities: including an online platform with quests, gamification, and bonuses. Enjoy PIN-UP Talks Club for movie and book lovers, cozy board game evenings, and special office days dedicated to holidays
🎳 Company events and team-building activities to strengthen connections and foster a positive work environment
📍 Beautiful offices in Kyiv, Warsaw, Limassol, Almaty, and Yerevan — work in comfort and build your network of IT professionals every day
📚 Educational support from our L&D team, including internal and external training sessions, conferences, and courses on platforms like Udemy
🗣 Free internal English courses
🤸‍♀ Sports benefits to help you stay active and energized
 

We are looking for a Backend Architect with deep Golang expertise and a strong background in low-level networking, Linux kernel development, and Kubernetes. 

This role is ideal for a senior and a seasoned engineer ready to take ownership of backend architecture and lead the evolution of Kubeshark — our Actionable Network Observability Platform for Kubernetes. 

As an architect in our core engineering team, you’ll be responsible for shaping the future architecture of Kubeshark, while having complete responsibility for major parts of the system. You'll work at the intersection of the Linux kernel, Kubernetes, and various networking technologies.

 Your decisions will directly impact the product’s scalability, reliability, and maintainability — and will be used by developers and DevOps teams globally.

Responsibilities

Backend Architecture & Development

1. Design and lead the implementation of Kubeshark’s backend architecture using Golang.
2. Define system components, interfaces, and services to support scalability and performance.
3. Dive into existing codebases, understand architectural intent, and refactor where needed to improve clarity, performance, or maintainability.
4. Guide the evolution of traffic processing and protocol inspection pipelines.
5. Build and optimize Docker images for production-grade Kubernetes deployments.
6. Mentor and collaborate with engineers to promote high standards of code and design.
7. Actively contribute to a positive, collaborative, and high-energy team culture.

Low-Level Networking & Kernel Engineering

1. Design and implement  the development of protocol dissectors and traffic reassembly pipelines.
   
    
2. Design systems around kernel-level networking interfaces and packet capture frameworks.
3. Collaborate with network engineers to architect and implement implement eBPF and XDP programs for advanced packet filtering.
    

Cloud-Native Design

1. Build and maintain Kubernetes-native services
2. Collaborate with DevOps and Infra teams to ensure tight cloud-native integrations.
3. Ensure fault-tolerant, scalable, and observable backend services in Kubernetes environments.
    

Requirements

✅ Strong architectural experience with backend systems, ideally at scale.
✅ 7+ years of production experience in backend development, with 5+ years in Golang.
✅ Deep knowledge of Kubernetes internals and networking model.
✅ 4+ years in Linux kernel or low-level networking development.
✅ Proven experience designing or working with protocol parsing, traffic reassembly, and packet inspection tools.
✅ Strong command of the OSI model and application-layer protocols (TCP, UDP, HTTP/2, DNS, etc).
✅ Familiarity with Docker, Helm, kubectl, and other K8s-native tooling.
✅ Strong English communication skills (written and verbal).
✅ Prior experience in leading architectural discussions or system design reviews.
✅ Proven track record in remote, distributed teams.

✅ Highly communicative, team-oriented, and invested in building a positive and collaborative work environment.
✅ Strong English communication skills (written and verbal).

Nice to Have

➕ Hands-on with eBPF and XDP in production environments.
➕ Experience with observability platforms, infrastructure monitoring, or SRE workflows.
➕ Open-source contributions in Golang, networking, or Kubernetes-related projects.
➕ Familiarity with cloud infrastructure (AWS preferred).
➕ Active in technical communities (GitHub, Reddit, StackOverflow, etc).

What We Offer

🌍 100% remote — work from anywhere.
🧠 Strategic technical role with global impact.
📦 Work with cutting-edge tech: eBPF, Kubernetes, protocol analysis.
🔥 Influence the future of cloud-native network observability.

How to Apply

Please send your resume along with:

• Examples of backend architecture you've led or shaped (blog posts, diagrams, GitHub, etc)
• Work samples or repos involving eBPF, protocol parsing, or low-level networking
• Any Kubernetes-native tools, services, or integrations you’ve built
• Anything else showcasing your technical depth and leadership

Our mission at Geniusee is to help businesses thrive through tech partnerships and strengthen the engineering community by sharing knowledge and creating opportunities🌿
Our values are Continuous Growth, Team Synergy, Taking Responsibility, Conscious Openness and Result Driven. We offer a safe, inclusive and productive environment for all team members, and we’re always open to feedback💜 If you want to work from home or work in the offices in Kyiv or Lviv with stable electricity and Wi-Fi , great — apply right now.
 

About the project:
Blockchain-based platform
 

Requirements:
● Web 3 SW + Experience with blockchain;
● Fullstack Basics + Javascript and TypeScript Frameworks
● Frontend + Backend (Golang Rust) Cloud Hosting Databases API Integration GraphQL
● Cryptography
● zkProof Smart Contracts
● Bonus Experience and Skills Cosmos Ecosystem CosmWasm

What will you get:
● Competitive salary and good compensation package;
● Exciting, challenging and stable startup projects with a modern stack;
● Corporate English course;
● Ability to practice English and communication skills through permanent interaction with clients from all over the world;
● Professional study compensation, online courses and certifications;
● Career development opportunity, semi-annual and annual salary review process;
● Necessary equipment to perform work tasks;
● VIP medical insurance or sports coverage;
● Informal and friendly atmosphere;
● The ability to focus on your work: a lack of bureaucracy and micromanagement;
● Flexible working hours (start your day between 8:00 and 11:30);
● Team buildings, corporate events;
● Paid vacation (18 working days) and sick leaves;
● Cozy offices in 2 cities ( Kyiv & Lviv ) with electricity and Wi-Fi (Generator & Starlink);
● Compensation for coworking (except for employees from Kyiv and Lviv);
● Corporate lunch + soft skills clubs;
● Unlimited work from home from anywhere in the world (remote);
● Geniusee has its own charity fund.

We are looking for a Go Developer to join our friendly team, who is ready to work in a fast-paced environment!
 

Requirements:

• At least 1 year of commercial experience in Go development.
• Experience with Blockchain technologies (Solana, EVM)
• Strong knowledge of Go concurrency patterns, gRPC, and REST APIs.
• Experience with PostgreSQL, MongoDB, or other databases.
• Ability to work effectively in a team, collaborate with colleagues, and meet deadlines.
• Experience with Git version control, including knowledge of Gitflow.

Will be a plus:

• Experience developing smart contracts using Solidity or Rust.
• Experience working with Docker, Kubernetes, and cloud services.
   

We offer:

• Professional development and personal growth.
• Challenging projects in the blockchain space.
• Remote work.
• A friendly and open-minded team.
   

📩 Waiting for your CV!

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: 

 

We are seeking an experienced hands-on Backend Team Leader (Golang) to build and lead a high-impact team of 2-3 backend developers and a QA engineer. This team will play a crucial role in refactoring and performance optimization while also contributing to new product development.

In this role, you will be responsible for:

• Refactoring and Migration – Transitioning legacy Ruby code to Golang to enhance performance and maintainability.
• Scalability and Stability – Optimizing system architecture to support increasing demand.
• Data Pipeline Optimization – Improving event-driven processing for efficiency and reliability.
• New Product Development – Contributing to innovative features, such as a promotions application.
• Technical Alignment – Collaborating with architect and the core team leader to ensure alignment with the company’s long-term technical vision.

Key Responsibilities: 

• Lead and mentor a team of several backend developers and a QA engineer.
• Drive the migration of Ruby services to Golang, ensuring high-performance, maintainable code.
• Improve system scalability, stability, and performance through architectural enhancements.
• Oversee data pipeline optimization to ensure efficiency and reliability.
• Conduct code reviews, enforce best practices, and foster a strong engineering culture.
• Work hand-in-hand with architects, tech leads and the core team leader to ensure technical alignment.
• Participate in technical planning, designing scalable solutions that support business growth.
• Provide technical guidance and troubleshoot performance bottlenecks.
• Manage the team Scrum process, including sprint planning, backlog prioritization, and retrospectives.
• Track team progress and drive improvements in development velocity and quality.
• Ensure timely delivery of refactoring efforts, scalability improvements, and new product features.

Required Competence and Skills:

• At least 2-3 years of experience in backend development in Gloang
• At least 2 years of experience leading a small software development team (unofficial experience counts)
• Proven track record in migrating or refactoring large-scale applications 
• Experience with event-driven architecture using Kafka or RabbitMQ
• Strong knowledge of high volume Elasticsearch for scalable data storage
• Solid understanding of microservices architecture and scalable backend systems.
• ⁠⁠Strong knowledge of AWS Cloud, S3, RDS, EC2, EKS
• Experience Proficiency in relational databases (PostgreSQL, Amazon RDS) and caching mechanisms like Redis.
• Experience with CI/CD pipelines, automated testing, and performance monitoring.
• Ability to balance hands-on coding with leadership responsibilities.
• Problem-solving mindset with a focus on scalability and maintainability.
• Excellent communication and ability to work with cross-functional teams.

• ⁠⁠English level - Upper-Intermediate 

   

Nice-to have:

• Experience with Ruby (for refactoring and understanding legacy systems). If there is no experience with Ruby, then willingness and learn and work with Ruby.  This role is 70-80% Golang-focused.

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.

Join a tech team that’s building a next-generation digital infrastructure to verify and monetize real-world impact. 

REQUIREMENTS:

MUST HAVE

• 5+ years of software engineering experience, with a strong command of blockchain development.
• Proficiency in Golang or Rust.
• Deep knowledge of blockchain architecture, smart contracts, and cryptographic principles.
• Solid foundation in JavaScript/TypeScript and fullstack development (both frontend and backend).
• Experience with cloud hosting, API integrations, databases, and GraphQL.

WILL BE A PLUS

• Familiarity with Cosmos SDK, CosmWasm, or other ecosystem-specific tooling.
• Understanding of zero-knowledge proofs (zkProof).

What You'll Be Doing

• Lead the architecture and implementation of core blockchain and cryptography modules.
• Design, build, and optimize smart contracts and decentralized APIs.
• Collaborate closely with the CTO and cross-functional teams to translate real-world needs into robust decentralized systems.
• Contribute to the continuous improvement of a production-grade platform used to track and tokenize measurable outcomes.
• Ensure high scalability, reliability, and security across services.
• Participate in code reviews, testing, and the deployment of cloud-hosted infrastructure.

ABOUT PROJECT

Our client is a Software company from Europe. 

PRODUCT

This platform merges Web3, decentralized identity, blockchain, and cryptographic technologies to support decentralized applications addressing social, environmental, and economic challenges.

The team works on a protocol that enables the creation and verification of tamper-proof digital credentials and the tokenization of outcome-based data. This technology powers a growing ecosystem of apps that bring transparency, accountability, and financial access to global development initiatives.

You’ll be contributing to a platform that’s already been deployed in collaboration with high-profile international organizations and is used across sectors such as clean energy, healthcare, education, and youth development.

STAGE

The active phase of development

Interview Stages

1. Call with Recruiter (30 minutes)
2. Interview with our Senior Engineer and Recruiter (1 hour)
3. Client intro call (30 minutes)
4. Technical and team fit interview with client (2 hours and 30 minutes)

We are looking for a skilled Senior Backend Developer (Golang, Typescript) to build and support high-performance backend services for a FinTech platform. The ideal candidate should have strong experience with Go (Golang) and TypeScript , and a solid background in designing scalable, secure solutions within a cloud-native architecture.

Responsibilities:

• Develop and maintain backend services using Go (Golang) and TypeScript.
• Build and optimize GraphQL APIs with Apollo Server and REST APIs using Koa.js (or equivalent in Go).
• Integrate with third-party APIs and external services.
• Design and manage AWS serverless architectures including Lambda, API Gateway, DynamoDB.
• Ensure security, authentication, and data protection using JWT, OAuth.
• Optimize API performance, caching strategies (Redis), and database queries.
• Implement CI/CD pipelines and Infrastructure as Code (IaC) using CloudFormation.
• Handle error logging and monitoring using AWS CloudWatch.
• Optimize database queries and indexing for high-volume transaction processing.
• Write and maintain unit, integration, and end-to-end tests using Jest (or relevant testing frameworks in Go).
• Collaborate with frontend teams, product managers, and designers to ensure seamless integration.
• Mentor junior developers and review code for best practices.
• Maintain API documentation and system architecture.
• Adhere to industry standards for FinTech and implement best practices.

Requirements:

• Fluent in English with excellent communication skills.
• 6+ years of experience in developing and maintaining backend services using TypeScript and Go (Golang).
• Strong expertise in GraphQL (Apollo Server) and RESTful API development.
• Solid understanding of cloud-native architectures, particularly AWS serverless solutions (Lambda, API Gateway, DynamoDB, CloudFormation).
• Experience with NoSQL and SQL databases, with an emphasis on performance optimization.
• Strong knowledge of authentication, authorization, and security best practices.
• Exposure to DevOps practices, CI/CD pipelines, and infrastructure as code.
• Frontend experience is a plus: React, CSS, Next.js.
• Strong problem-solving skills and ability to work in a fast-paced environment.

Will be a plus:

• Experience working in FinTech or other highly regulated industries.
• Knowledge of blockchain technologies and cryptographic security.
• Understanding of financial data processing, payment gateways, and transaction security.

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.