
Umber
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· 83 views · 24 applications · 2d
Full-Stack Developer (Backend-Focused, Node.js + React)
Full Remote · Ukraine · 3 years of experience · IntermediateWe’re looking for a Middle Full-Stack Developer to help build and scale various internal services and systems for a fast-growing iGaming platform focused on the Asian market. You’ll work closely with our designer on frontend interfaces and can be involved...We’re looking for a Middle Full-Stack Developer to help build and scale various internal services and systems for a fast-growing iGaming platform focused on the Asian market. You’ll work closely with our designer on frontend interfaces and can be involved in high-load backend systems development, working on diverse internal tools and services including payment processing, user management, analytics, and more.
If you enjoy diverse engineering challenges, taking ownership, and building reliable systems without heavy bureaucracy — we’d love to connect!
How You’ll Contribute
Frontend Development:
- Work closely with designer to implement modern user interfaces using React and TypeScript
- Develop admin dashboards and management interfaces for various business operations
- Create internal tools and CRM interfaces for different business services
- Build user-facing features for gaming platform management and analytics
- Implement real-time updates and notifications for system status and operations
Work with Ant Design components and design system
Backend Development & High-Load Systems:
- Participate in developing and maintaining high-load backend services using Node.js and NestJS
- Work on diverse internal services (user management, analytics, reporting, CRM, admin tools, payment gateways, etc.)
- Handle different data models and business logic across multiple service domains
- Create APIs for internal tools and third-party integrations
- Work with PostgreSQL databases for various business data management
- Integrate payment systems and other external APIs when needed
- Contribute to building scalable architecture solutions depending on project requirements
- Contribute to implementing system redundancy and high availability solutions
What Makes You a Perfect Fit
Required Skills:
- 3-5 years of experience with full-stack development
- Strong React skills with modern hooks, state management (Redux/Context API), and TypeScript
- Solid Node.js and NestJS experience for backend development
- Experience with REST APIs, authentication, and data validation
- Good understanding of PostgreSQL and database design principles
- Experience working with designers and implementing UI/UX designs
- Experience with version control (Git) and collaborative development
- Understanding of modern CSS/styled-components and frontend tooling
- English proficiency for technical communication
Nice-to-Have:
- Understanding of high-load systems, scalability concepts, and performance optimization
- Understanding of microservices architecture and async processing (gRPC)
- Experience with Ant Design components and theming
- Basic AWS knowledge or cloud services experience
- Understanding of financial platforms or gaming industry systems
- Experience with testing frameworks (Jest, React Testing Library, Supertest)
- Knowledge of Docker and containerization
- Familiarity with monitoring tools and system observability
- Previous experience in fintech or gaming industries
Experience working in cross-functional teams with designers and product managers
Hiring Process
The hiring process is clear and concise. It starts with a 30–40 min intro call with a Talent Partner — an opportunity to learn more about the project, Umber, and the team, as well as to discuss the candidate’s experience.
Next comes a technical interview (~1.5 hours) covering both React and Node.js.
The final step is a ~30 min conversation focused on managerial topics and organizational details.Your next challenge is waiting. Let’s connect, talk about the impact we can make, and see if we’re the right fit for each other!
Who We Are
Umber is a full-cycle product agency founded in 2018. We started as a design-driven company and now build complex finance systems from the ground up. Our current focus: payment solutions, trading platforms, and tools for professional investors and traders.
We’re a small, ambitious, senior-level team working with top-tier financial clients. We’re passionate about finance, trading, and creating systems that don’t just work — they scale and shine under pressure. Check us out at https://umber.tech.Why Join Us
- High-load engineering challenges — internal business systems, real-time trading, scalable backend systems, financial-grade security, modern React applications
- Cross-functional collaboration — work closely with designer and backend team on complex technical solutions
- Variety of projects — work on user management systems, analytics platforms, admin tools, CRM interfaces, and other internal services
- Small team, no bureaucracy — you’ll work closely with the CTO and contribute to architecture decisions
- Growth opportunities — learn from senior developers and expand from middle to senior level
- Flexibility — fully remote, Eastern European time zone overlap
- Mentorship and space to grow — if you’re good, we’ll make you great
- Impact — your code goes live, fast. You’ll contribute to both user-facing interfaces and high-load backend systems that power the entire gaming platform
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· 74 views · 21 applications · 16d
Full-Stack Developer (Backend-Focused, NestJS + PostgreSQL) — Trading Tournaments Platform
Full Remote · Ukraine · 4 years of experience · IntermediateWe’re looking for a backend-focused Full-Stack Developer to help build a real-time platform where users simulate trading activity across global markets. Each user enters a session, selects a trading pair, tracks their performance, and earns in-platform...We’re looking for a backend-focused Full-Stack Developer to help build a real-time platform where users simulate trading activity across global markets. Each user enters a session, selects a trading pair, tracks their performance, and earns in-platform currency based on results. All are powered by structured logic, live data from MatchTrader, and reliable backend flow. You’ll join a small, agile team that’s building the backend from the ground up: stats tracking, deposits, rewards logic, marketplace integration, and more.
It’s not a trading exchange, not a game — it’s a performance-driven product with clear rules and clean architecture. You’ll build the logic behind sessions, calculations, rewards, and API integrations while keeping the front end running smoothly when needed.
How You’ll Contribute
- Build backend logic for trading sessions, stats tracking, deposits, and reward distribution
- Integrate with MatchTrader API for real-time market data and user interaction flow
- Implement internal currency logic and connect it to marketplace reward flows (e.g. Amazon-like catalogs)
- Ensure stable session logic and secure data handling
- Occasionally support frontend tasks (React) — UI for dashboards, session results, wallet info
Collaborate with a senior backend engineer and frontend teammate in a tight-knit setup
What Makes You a Perfect Fit
- 3-4+ years of experience with Node.js/NestJS and PostgreSQL
- Solid grasp of session-based logic, data modeling, and backend architecture
- Strong TypeScript skills, clean and modular code
- Experience integrating 3rd party APIs and handling edge cases
- Comfortable working on early-stage products and owning features end-to-end
Can balance backend focus with occasional full-stack involvement
Nice-to-Haves
- Experience with real-time apps or financial data platforms
- Familiarity with AWS and/or Docker
- Understanding of internal tokens/gamification logic
- Interest in trading, finance, or simulation-based tools
- Experience working in lean teams with product ownership
Our Tech Stack
NestJS, Node.js, TypeScript, PostgreSQL, React, microservices architecture, Docker, high-load infrastructure, AWS (S3, Lambda, EC2), CI/CD pipelines, MatchTrader API.
Hiring Process
The hiring process is clear and concise. It starts with a 30–40 min intro call with a Talent Partner — an opportunity to learn more about the project, Umber, and the team, as well as to discuss the candidate’s experience.
Next comes a technical interview (~1.5 hours) covering both React and Node.js.
The final step is a ~30 min conversation focused on managerial topics and organizational details.
Your next challenge is waiting. Let’s connect, talk about the impact we can make, and see if we’re the right fit for each other!
Who We Are
Umber is a full-cycle product agency founded in 2018. We started as a design-driven company and now build complex finance systems from the ground up. Our current focus: payment solutions, trading platforms, and tools for professional investors and traders.
We’re a small, ambitious, senior-level team working with top-tier financial clients. We’re passionate about finance, trading, and creating systems that don’t just work — they scale and shine under pressure. Check us out at https://umber.tech.
Why Join Us
- High-load engineering challenges — internal business systems, real-time trading, scalable backend systems, financial-grade security, modern React applications
- Cross-functional collaboration — work closely with designer and backend team on complex technical solutions
- Variety of projects — work on user management systems, analytics platforms, admin tools, CRM interfaces, and other internal services
- Small team, no bureaucracy — you’ll work closely with the CTO and contribute to architecture decisions
- Growth opportunities — learn from senior developers and expand from middle to senior level
- Flexibility — fully remote, Eastern European time zone overlap
- Mentorship and space to grow — if you’re good, we’ll make you great
- Impact — your code goes live, fast. You’ll contribute to both user-facing interfaces and high-load backend systems that power the entire gaming platform
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· 102 views · 23 applications · 16d
Full-Stack Developer (Backend-Focused, NestJS + PostgreSQL) — Payment Gateway Aggregator
Full Remote · Ukraine · 4 years of experience · IntermediateWe’re looking for a Full-Stack Developer with a backend focus to strengthen our team on a high-load payment gateway aggregator used across several markets in Asia and LATAM. The platform processes thousands of transactions daily and integrates with local...We’re looking for a Full-Stack Developer with a backend focus to strengthen our team on a high-load payment gateway aggregator used across several markets in Asia and LATAM. The platform processes thousands of transactions daily and integrates with local payment providers in each region — acting as a key part of the company’s financial operations.
You’ll work mostly on the backend: improving reliability, integrating with new providers, and making sure everything scales smoothly. Some occasional frontend work (React) may pop up too.
How You’ll Contribute
- Develop and scale backend services for payment processing and provider integrations
- Work with local APIs and protocols across different markets (e.g., Thailand, Brazil, Philippines)
- Optimize database performance and handle transactional flows reliably
- Contribute to system stability and fault tolerance under increasing load
- Occasionally assist with frontend tasks (React) — e.g., dashboards, transaction monitoring
- Collaborate with a small full-stack team and participate in technical decision-making
What Makes You a Perfect Fit
- 3-4+ years of experience with Node.js/NestJS and PostgreSQL
- Solid understanding of backend architecture, transactional flows, and API integrations
- Experience working on high-load systems or products with real-time data
- Strong TypeScript skills and a clean coding style
- Familiarity with microservices, Docker, and CI/CD pipelines
- Comfortable switching context when needed and supporting frontend if required (React)
Nice-to-Haves
- Experience integrating with payment systems or financial APIs
- Knowledge of AWS services (S3, EC2, Lambda, CloudWatch)
- Understanding of fallback mechanisms and system reliability patterns
- Interest in infrastructure monitoring and performance optimization
- Experience working with region-specific products or international setups
Our Tech Stack
NestJS, Node.js, TypeScript, PostgreSQL, React, microservices, Docker, AWS, CI/CD pipelines, high-load architecture and provider APIs.
Hiring Process
The hiring process is clear and concise. It starts with a 30–40 min intro call with a Talent Partner — an opportunity to learn more about the project, Umber, and the team, as well as to discuss the candidate’s experience.
Next comes a technical interview (~1.5 hours) covering both React and Node.js.
The final step is a ~30 min conversation focused on managerial topics and organizational details.
Your next challenge is waiting. Let’s connect, talk about the impact we can make, and see if we’re the right fit for each other!
Who We Are
Umber is a full-cycle product agency founded in 2018. We started as a design-driven company and now build complex finance systems from the ground up. Our current focus: payment solutions, trading platforms, and tools for professional investors and traders.
We’re a small, ambitious, senior-level team working with top-tier financial clients. We’re passionate about finance, trading, and creating systems that don’t just work — they scale and shine under pressure. Check us out at https://umber.tech.
Why Join Us
- High-load engineering challenges — internal business systems, real-time trading, scalable backend systems, financial-grade security, modern React applications
- Cross-functional collaboration — work closely with designer and backend team on complex technical solutions
- Variety of projects — work on user management systems, analytics platforms, admin tools, CRM interfaces, and other internal services
- Small team, no bureaucracy — you’ll work closely with the CTO and contribute to architecture decisions
- Growth opportunities — learn from senior developers and expand from middle to senior level
- Flexibility — fully remote, Eastern European time zone overlap
- Mentorship and space to grow — if you’re good, we’ll make you great
- Impact — your code goes live, fast. You’ll contribute to both user-facing interfaces and high-load backend systems that power the entire gaming platform