Jobs

Valencia, Spain

BrainRocket is a global company creating end-to-end tech products for clients across Fintech, iGaming, and Marketing. ‍Young, ambitious, and unstoppable, we've already taken Cyprus, Malta, Portugal, Poland, and Serbia by storm. Our BRO team consists of 1,300 bright minds creating innovative ideas and products. We don’t follow formats. We shape them. We build what works, launch it fast, and make sure it hits.

We are looking for a skilled Team Lead Back-end Developer (Node.js) to join our team in Spain office.

✅Responsibilities:
✔️ Being transparent with the team about challenges, failures, and successes
✔️ Hiring and training technical personnel
✔️ Determining project requirements and developing work schedules for the team
✔️ Delegating tasks and achieving daily, weekly, and monthly goals
✔️ Liaising with team members and management to ensure projects are completed to standard
✔️ Motivating staff and creating a space where they can ask questions and voice their concerns
✔️ Delegating work and assignments to team members
✔️ Collaborating with their team to identify and fix technical problems
✔️ At least upper -Intermediate lvl of English

And for Developer part:
✔️ In-house platform development
✔️ 3rd party API integrations
✔️ Actively participate in developing new features from scratch

✅ Requirements:

✔️ At least 8+ years of experience, 3+ years in leadership
✔️ Excellent technical, diagnostic, and troubleshooting skills
✔️ Strong leadership and organizational abilities
✔️ Knowledge of JavaScript and the ECMAScript 6 standards
✔️ 3+ years of commercial experience with Node.js
✔️ 5+ years of commercial experience in web development
✔️ Commercial experience of working with DB
✔️ Commercial experience of implementing the REST and WebSockets
✔️ Experience of GIT version control system
✔️ Experience with databases MySQL
✔️ Experience with RabbitMQ
✔️ Experience with Redis

✅Nice to Have:
✔️ Experience with TypeScript

✅ We offer excellent benefits, including but not limited to:

🧑🏻‍💻 Learning and development opportunities and interesting challenging tasks;

✈️ Relocation package (tickets, staying in a hotel for 2 weeks);

🏋️‍♂️ Company fitness corner in the office for employees;

📚 Opportunity to develop language skills and partial compensation for the cost of language classes;

🎁 Birthday celebration present;

🏝 Time for proper rest and 22 working days of Annual Vacation

Join BrainRocket and rock with us! 🚀

Bold moves start here. Make yours. Apply today! 

We are seeking a skilled Senior Node.js Developer who will join our team in the office in Warsaw.

✅ Requirements:

✔️Strong knowledge of JavaScript and the ECMAScript 6 standards

✔️3+ years of commercial experience with Node.js and Nest.js

✔️5+ years of commercial experience in web development

✔️Commercial experience of working with high-load SQL or NoSQL databases

✔️Commercial experience of implementing REST, GraphQL, and WebSockets

✔️Understanding of the TDD principles and experience of writing tests

✔️Understanding of microservice architecture principles

✔️Experience of GIT version control system

✔️Experience with RabbitMQ

✔️Experience with Redis

✔️Experience with databases: MongoDB, MySQL

✔️At least an Intermediate level of English.

✅ Will be a plus:

✔️2+ years of hands-on experience developing CI/CD/Micro Services architecture/Containers

✔️Experience with Kubernetes

✔️Experience with Nats

✔️Experience with TypeScript.

✅ Duties and opportunities:

✔️In-house platform development

✔️3rd party API integrations

✔️Actively participate in developing new features from scratch.

✅ We offer excellent benefits, including but not limited to:

🚀 Career growth opportunities in an international and dynamic environment

📚 Opportunity to develop language skills with partial compensation for language courses

🎁 Special gifts for birthdays, weddings, and newborns

🏝️ 20 working days of paid annual vacation, plus paid sick leaves

🍲 Office snacks and refreshments

🏋️‍♂️ Sports package to support a healthy lifestyle

🩺 Comprehensive medical insurance for you and your partner

📍 Comfortable office with great facilities in a prime location

🎉 Exciting corporate events, team-building activities, and international company parties.

Valencia, Spain

BrainRocket is a global company creating end-to-end tech products for clients across Fintech, iGaming, and Marketing. ‍Young, ambitious, and unstoppable, we've already taken Cyprus, Malta, Portugal, Poland, and Serbia by storm. Our BRO team consists of 1,300 bright minds creating innovative ideas and products. We don’t follow formats. We shape them. We build what works, launch it fast, and make sure it hits.

❗️IMPORTANT: This position is office based for our office in Valencia, Spain.

❗️We can provide relocation assistance if you're outside of the city or country.

We are looking for a skilled Senior Node.js Developer with relocation to Spain.

✅ Requirements:
✔️Strong knowledge of JavaScript and the ECMAScript 6 standards
✔️4+ years of commercial experience with Node.js and Nest.js
✔️5+ years of commercial experience in web development
✔️Commercial experience of working with high loaded SQL or NO SQL databases
✔️Commercial experience of implementing the REST, GraphQL and WebSockets
✔️Understanding of the TDD principles and experience of writing tests
✔️Understanding of microservice architecture principles
✔️Experience of GIT version control system
✔️Experience with RabbitMQ
✔️Experience with Redis
✔️Experience with databases MongoDB, MySQL
✔️At least Intermediate lvl of English

✅ Will be a plus: 
✔️2+ years of hands-on experience developing over CI/CD/Micro Services architecture/Containers
✔️Experience with Kubernetes
✔️Experience with Nats
✔️Experience with TypeScript

✅ Duties and opportunities:

✔️In-house platform development
✔️3rd party API integrations
✔️Actively participate in developing new features from scratch

✅ We offer excellent benefits, including but not limited to:

🧑🏻‍💻 Learning and development opportunities and interesting challenging tasks;

✈️ Relocation package (tickets, staying in a hotel for 2 weeks and visa relocation support for our employees and their family members);

📚 Opportunity to develop language skills and partial compensation for the cost of language classes;

🏥 Private medical coverage;

🎁 Birthday celebration present;

🏝 Annual Vacation and paid sick days;

✅ Competitive remuneration level with annual review;

🤝 Teambuilding activities.

Bold moves start here. Make yours. Apply today! 

1. About Us

We’re a team of professional software developers. Our next mission: build a Shopify-embedded CRM that surfaces orders, customers, and live dashboards - all as a built-in native Shopify experience.

2. Why This Role Matters

Our users juggle disjointed tools. You’ll architect and deliver the central nervous system that unifies order data, conversations, and analytics - turning scattered touch-points into a single source of truth.

3. What You'll Own

- Architecture & Data. Design the PostgreSQL schema and Drizzle ORM models powering multi-tenant data.

- Integration. Figure out leverage points and how to integrate with 3rd party systems.

- App Framework. Ship performant React Router views inside the Shopify App Bridge.

- Core Features. Build customer timelines, order detail pages, and a metrics dashboard with live charts.

- CI/CD pipeline. Automated Acceptance tests.

- Technical Leadership. Mentor devs, run lean RFCs, and choose the right trade-offs for scale & security.

4. Tech Stack You’ll Thrive In

- Shopify App Platform (App Bridge, OAuth, Webhooks, GraphQL Admin API)

- React + Typescript with React Router

- Drizzle ORM on PostgreSQL 15

- Vite + Vitest / Playwright for DX & testing

5. You’re a Great Fit If You

- Have 5+ yrs shipping production-grade React/Node systems, with at least one Shopify app in market.

- Speak SQL natively and can reason about indexes, migrations, and isolation levels.

- Balance product sense with technical rigor - you ask “why” before “how”.

- Write clear, kind English

- You use Claude Code or Cursor daily.

- You do not generate me a boring-a** message with default ChatGPT style and instead actually just just send me a simple checklist of why I should hire you

Our Tech Stack

Please apply only if you have strong experience with this stack – we’re not considering non-Node environments at this time.

• Backend / Platform:
  Node.js / NestJS
  PostgreSQL, Redis, RabbitMQ
  Supabase Auth SDK (used internally, replaceable later)
  Kong API Gateway for token validation, routing, rate limiting
  AWS ECS, RDS, S3, SES, CloudWatch, Secrets Manager, etc.
  GitHub Actions (CI/CD)
  Cloudflare (DNS/CDN)
• API Layer:
  gRPC for internal service communication
  GraphQL via Apollo Server (central BFF handler behind Kong Gateway)
  REST for third-party integrations (e.g. CRM sync)
• Frontend (not your focus, just to understand context):
  React, MobX
  Ant Design, SCSS Modules

Our roadmap includes modules for ZK-powered trust verification, blockchain-based data proof, and AI-driven analytics, scoring, and partner insights. You may be part of these initiatives as the platform scales.

What You’ll Do

As the Senior Backend Engineer, you’ll be helping shape the architecture (in close collaboration with the Technical Lead and hands-on CTO) and building the platform from the ground up.

You’ll be responsible for implementing microservices, building integrations, and managing backend logic that powers our GraphQL API and integrations with third-party platforms. You will:

• Design and implement scalable gRPC microservices using NestJS
• Own PostgreSQL schemas, gRPC proto contracts, and service definitions
• Integrate with external platforms like Salesforce, ConnectWise, Kaseya, and others
• Implement secure authentication flows (login, magic links, password reset, refresh)
• Handle JWT validation, sessions, and RBAC logic via Kong and auth-service
• Write structured logs, tracing, and health endpoints
• Ship clean, production-ready code deployed via ECS + GitHub Actions
• Configure and manage observability and security tooling (e.g. Datadog or custom setup with Prometheus + Grafana + Loki + Tempo + Fluent Bit) across services

We’re not looking for someone to just “ship tasks”. We want someone who questions requirements, brings better ideas, and treats the backend like their product.

We’re not looking for a unicorn, the requirements are a guide to the kind of experience that would help you succeed in this role.

Ideal Qualifications

• 7+ years of overall software engineering experience
• 5+ years working with Node.js + NestJS + TypeScript
• Strong expertise with gRPC and microservice architecture patterns
• Solid experience with AWS core services and Docker-based containerisation
• Solid experience designing and managing GraphQL schemas
• Proficiency with OAuth2, session management, and secure API design
• Experience with Supabase Auth or similar (Keycloak, ORY, Firebase)
• Experience with CRM integrations like Salesforce, ConnectWise, Kaseya
• Experience working with compliance frameworks like ISO 27001, SOC2, or GDPR
• Understanding of web security threats and mitigation strategies (XSS, CSRF, SSRF, JWT handling, cookie protection, etc)
• Experience designing service boundaries, data contracts, and owning production systems end-to-end

Nice to Have

• Experience developing in Python or Go when needed
• Familiarity with blockchain or verifiable data architectures (ZK)
• Interest in AI pipelines, scoring systems, or ML integration
• Ability to collaborate with frontend developers; familiarity with React

What We Offer

• Ability to build greenfield systems with no legacy blockers or micromanagement
• Deep ownership of architecture, integrations, and backend direction
• Space to focus on engineering with care about the quality, stability, and best practices
• Minimal bureaucracy, fast decisions, and direct collaboration with the founding team
• Technical growth opportunities as we expand into blockchain, ZK, and AI
• We aim to offer compensation that’s both competitive and aligned with your experience, so you feel well rewarded for the impact you bring
• In case of successful long-term collaboration, we’re open to supporting relocation to Australia for you and your family.

Note: If you don’t have an advanced level of English (equivalent to IELTS 7.0 or above), you should be able to communicate confidently in Ukrainian (Russian-speaking Ukrainians are also welcome)

🚀 We’re looking for a skilled Node.js Developer to join our core team and help build a fintech product from scratch. This role is ideal for someone who enjoys solving complex backend challenges, designing integrations, and contributing to high-level architecture decisions.

You’ll be working on a live product that directly impacts business outcomes — no abstract tasks or endless MVP loops. Your code will matter.
 

Must-have requirements:

• 5+ years of commercial development experience with Node.js and TypeScript (Nest is optional)
• Deep knowledge of PostgreSQL
• Experience with message queues (RabbitMQ or Kafka)
• Hands-on experience integrating third-party services and designing/writing APIs
• Understanding of distributed systems
• Ability to read architectural documentation, work independently, learn fast, and handle large tasks autonomously
   

Your responsibilities will include:

• Designing and developing product features from scratch
• Building integrations with third-party financial and technical services
• Developing public-facing payment services and internal microservices
• Contributing to key platform-level technical decisions
• Following and promoting best engineering practices within the team
   

Nice to have:

• Experience in the finance domain
• Background working with microservices
• Writing and maintaining automated tests (Unit/Integration/E2E)
• Experience with high-load systems
• Solid understanding and application of OOP, SOLID, DRY, KISS principles
   

🎁 What we offer:

• Work on a real, impactful product — not a pet project
• A strong, critical-thinking team that values initiative
• Transparent communication, flexible hours, hybrid or full remote collaboration
• Space for professional and product growth
• 17 paid vacation days + sick leave
• Medical insurance
• Budget for conferences, workshops, and training
• Free English language courses
• Cozy, modern office in the historical center of Kyiv
   

📩 Sounds like a match? Let’s talk — we’d love to hear from you!

We are seeking a highly skilled Backend Developer specializing in Node.js (Nest.js) to join our team. You will be responsible for designing and architecting backend services using DDD principles, developing scalable solutions, and owning key technical decisions. Working closely with front-end and DevOps teams, you will ensure smooth delivery, optimize performance, implement robust security, and uphold coding best practices. This role offers the opportunity to solve complex challenges, drive technical strategy, and introduce innovative tools and processes.

Must-Have:

• 5+ years professional experience in TypeScript/JavaScript backend development
• Strong proficiency in SQL and PostgreSQL (including query optimization, indexing, and performance tuning)
• Solid understanding of HTTP, REST, and API design principles
• Deep knowledge of design patterns, SOLID principles, and Domain-Driven Design (DDD)
• Proven experience with Nest.js
• Expertise with ORMs, preferably TypeORM
• Comfortable using AI-assisted development tools in the coding process
• Advanced experience writing unit, integration, and e2e tests (preferably with Jest)

Nice to Have:

• Experience with message brokers (RabbitMQ preferred)
• Experience with Redis for caching and pub/sub
• Familiarity with WebSockets or other real-time communication methods
• Experience in microservices architecture
• Experience in the AdTech industry (preferable)
• Experience working with Google Cloud Platform (GCP)

Responsibilities:

• Design and architecture of backend services, following DDD principles
  Develop and maintain high-quality, scalable backend services in Node.js (Nest.js)
• Own technical decisions and guide implementation strategy
• Collaborate with front-end and DevOps teams to ensure smooth delivery
• Optimize backend performance, scalability, and maintainability
  Implement security best practices, authentication, and authorization mechanisms
• Define and enforce coding standards and best practices across the team
• Troubleshoot complex production issues and implement long-term solutions
• Stay ahead of emerging technologies and introduce relevant tools and processes

Benefits:

• Competitive and Attractive Pay.
• 21 vacation + 7 no-questions-asked sick days per year.
• Flexible hours for a better work-life balance.
• Career Growth: Continuous Development & Performance Reviews.
• Team-building, English classes.
   

Join Our Team of Visionary Innovators! Are you a mindful go-getter with an entrepreneurial spark? We're on the lookout for dynamic individuals ready to grow and thrive with us. At our core, we believe in people first—your passions, ambitions, and evolution matter. 

Here, growth isn’t just a goal; it’s the #1 priority. Work is personal. Personal drives growth. Growth fuels prosperity.

If this resonates with you, send us your CV and let’s kickstart something extraordinary! Don’t tick every box? No problem! If you share our love for technology, we’d still love to chat and explore the possibilities together. 

Our client is a global media localization company that provides dubbing, subtitling, and other language services for film, TV, and streaming platforms. Conduct migration of legacy .NET and PHP services to a modern Node.js + React architecture, involving refactoring of complex system designs, implementation of best practices for performance and security, integration of REST APIs, database optimization, with deployment on cloud platforms, and leadership in guiding the technical direction.
 

Requirements:

• 5+ years of professional software development experience.
• Strong hands-on experience with Node.js and React in production systems.
• Previous commercial experience with .NET or PHP applications.
• Proven ability to understand and refactor complex system designs.
• Strong knowledge of REST APIs, asynchronous processing, and database design.
• Familiarity with cloud-based deployments (AWS, Azure, or GCP).
• Excellent communication and leadership skills for guiding technical decisions.
• English-Upper-Intermediate.
   

Responsibilities:

• Participate in the migration of legacy .NET/PHP services to Node.js + React.
• Analyze, document, and simplify complex system architectures.
• Define and enforce best practices in code quality, performance, and security.
• Collaborate with cross-functional teams to design scalable solutions.
• Mentor and support mid-level engineers in migration and development tasks.
• Participate in code reviews, ensuring maintainable and testable code.
• Proactively identify risks, bottlenecks, and architectural improvements.

We offer:

• Annual paid vacation of 18 working days.
• Extra vacation days for long-lasting cooperation.
• Annual paid sick leave of 10 days.
• Maternity/Paternity leave.
• The opportunity for sabbatical leave.
• Marriage and Parenthood Package.
• Compensation for sports activities (up to 250$ per year) or health insurance covering (70%) — after the trial period.
• Internal education (corporate library, Udemy courses).
• Career development plan.
• English and Spanish classes.
• Paying taxes and managing PE (Private Entrepreneur).
• Technical equipment.
• Internal Referral program.
• Opportunity to take part in company volunteering activities.
• Sombra is a “Friendly to Veterans” award-holder.

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 platform provides organizations with real-time visibility and control over their digital environments, enabling IT teams to detect, diagnose, and resolve issues before they impact employees. It integrates multiple products into a single, unified experience—leveraging AI-driven automation, intelligent data processing, and scalable architecture to enhance productivity across global workplaces. The DEX Platform team builds the core infrastructure that powers these capabilities, delivering high-performance backend services and advanced data pipelines at scale.

About the Role: 
We are looking for an experienced Senior Backend Data Engineer to join our advanced employee experience monitoring and optimization platform and take a leading role in building the next generation of our data infrastructure. This role involves designing and implementing large-scale, real-time data pipelines and backend services that support both operational workflows and AI-driven insights.

You will work end-to-end—covering architecture, development, deployment, and ongoing production monitoring—while collaborating closely with backend, AI, and data specialists to ensure high performance, scalability, and reliability.

Key Responsibilities: 

• Design, develop, and maintain robust backend services and data processing pipelines for large-scale, real-time environments.
• Build and optimize streaming solutions using technologies like Kafka, Flink, and other stream-processing frameworks.
• Own the full lifecycle of services: architecture, implementation, deployment, monitoring, and scaling.
• Collaborate with cross-functional teams, including backend engineers, AI developers, and data analysts, to deliver production-ready solutions.
• Ensure compliance, security, and observability for all data-related systems.
• Work with cloud infrastructure to design and deploy scalable solutions.

• Troubleshoot and resolve production issues with a focus on high availability and system resilience.

   

Required Competence and Skills:

• 5+ years of backend/data engineering experience.
• Strong proficiency in Node.js (NestJS/Express).
• Familiarity with Java (Vert.x or Spring) will be a big advantage.
• Solid understanding of microservices architecture and cloud platforms (Azure, AWS, or GCP).
• Hands-on experience with Kafka and streaming frameworks such as Kafka Streams, Flink, Spark, or Beam.
• Strong foundation in object-oriented design, design patterns, and clean code principles.
• Experience in production-aware environments, including monitoring, troubleshooting, and optimization.
• Comfortable designing, deploying, and maintaining backend services and data flows.
• Passion for continuous learning, experimenting with new technologies, and building reliable systems at scale.
• Strong product mind-set, open-mindedness and flexibility to work with different technologies as per company needs
• Excellent communication skills in English (Hebrew a plus).
• Team player with a positive attitude and a passion for delivering high-quality products.

Nice to have:

• Familiarity with AI-first development tools (e.g., GitHub Copilot, Cursor).
• Knowledge of Postgres, Redis, or ClickHouse.

Why Us?

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

We provide full accounting and legal support in all countries in which 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.

We are looking for a Senior Full-Stack Developer with a strong background in React Native and Node.js, who also has proven Team Lead experience. Although this role does not involve mentoring or managing a team, leadership experience is crucial for maintaining high technical standards and effective communication with clients.

Responsibilities:

• Provide precise task estimations and actively contribute to project planning

• Perform high-quality Code Reviews and ensure best engineering practices

• Join and lead technical discussions with clients (occasionally)

• Develop, maintain, and optimize applications across the full stack using React Native + Node.js

• Ensure the technical direction of the project is aligned with business needs

Requirements:

• 5+ years of commercial development experience with React Native and Node.js

• 2+ years of experience as a Team Lead (tech leadership, code quality ownership, client communication)

• Strong knowledge of software architecture and scalable system design

• Hands-on experience with Git, pull requests, and review processes

Senior Full-stack Engineer (React + Node.js) | Remote

We are building the next wave of mobile-first entertainment — an AI-powered streaming platform that transforms movies and series into ultra-engaging, bite-sized episodes tailored to each user’s time, language, and taste.

Think Netflix meets TikTok, powered by the intelligence of Spotify and the growth loops of mobile gaming. Our founders are experienced entrepreneurs who previously built successful gaming and AI companies used by tens of millions worldwide. With strong funding and a bold vision, we are reimagining storytelling for the way people actually live — fast, fragmented, mobile-first.

About the role
We’re looking for a Senior Full-stack Engineer to join our founding team. You’ll have high ownership and autonomy, shaping the product direction and engineering culture from the ground up. This is a chance to build a global consumer product with massive scale potential.

What you’ll do

• Build and maintain performant React-based UIs.
• Design and develop scalable Node.js APIs and backend microservices.
• Integrate complex video and data pipelines into the product.
• Ensure seamless 9:16 mobile-first video experiences.
• Ship features end-to-end: idea → design → development → testing → launch.
• Collaborate with product, design, and AI teams to push the boundaries of short-form storytelling.

Requirements

• 5+ years of professional full-stack experience.
• 3+ years with React (Hooks, Context, state management, optimization).
• 3+ years with Node.js (Express, NestJS or similar).
• Strong JavaScript (ES6+) & TypeScript.
• Experience with APIs (REST/GraphQL), SQL & NoSQL DBs.
• Production deployment in AWS/GCP/Azure.
• Familiarity with CI/CD, Docker, scalable system design.
• Startup mindset: independent, accountable, hands-on.

Nice-to-haves

• React Native or mobile frameworks.
• Experience with video streaming or social apps.
• AI/ML integrations (LLMs, agents).
• Real-time features (WebSockets, pub/sub).
• Experience at high-scale consumer products.

Why join?

• Be part of the founding tech team.
• Shape a global product from the ground up.
• Work with cutting-edge AI in entertainment.
• Competitive package, remote-first flexibility.

Hey there! 👋

We are looking for a senior full-stack engineer with extensive experience in Node.js, React.js, and core data analysis. You'd be working with a team of a well-funded Silicon Valley-based tech startup, on a digital product for retail and customer success professionals in the United States.

What skills do we expect you to have: 🎯

• English: Advanced (B2+)
• B.Sc. in Computer Science or similar;
• Excellent communication, collaboration, problem-solving, and analytical skills;
• 5+ years of writing commercial React.js and Node.js apps;
• Extensive experience with Google Cloud Platform;
• Extensive experience with PostgreSQL and ElasticSearch;

What you would be doing: 💪

• UI & Data Visualization (React.js)
  • Support filtering, drill-downs, and real-time data exploration;
  • Deliver intuitive UX and customizable, multi-tenant dashboards;
  • Optimize rendering for large datasets and live updates;
  • Build interactive dashboards with charts, tables, and KPIs powered by ElasticSearch;
• Database engineering (PostgreSQL):
  • Designing relational schemas optimized for transactional operations;
  • Maintain data quality, migrations, and integrity across multi-tenant workloads.
  • Managing large datasets with partitioning, indexing, and query optimization;
• Experience with core data analysis:
  • Architecting ElasticSearch indices and mappings for high-volume, multi-tenant analytics;
  • Build pipelines (ETL/streaming/batch) to sync Postgres / ElasticSearch reliably;
  • Work closely with product to define analytics features (dashboards, KPIs, search);
  • Optimizing for scale: query performance, sharding, replication, cluster health;
  • Designing efficient queries and aggregations to power real-time insights;

What’s in it for you: 🌴

Professional Growth & Lifestyle:

• Remote work (our team is 100% remote);
• Access & support for obtaining certifications;
• Opportunity to join an international team of a fast-scaling startup;
• Leadership initiatives;

Benefits:

• Annual vacation: 20 business days (100% compensation)
• Annual sick leave: 10 business days (100% compensation)
• Competitive compensation.

Please don't hesitate to reach out if you have any questions. We can't wait to hear from you!

Best regards,

Universium Team ❤️

BrainRocket is a global company creating end-to-end tech products for clients across Fintech, iGaming, and Marketing. ‍Young, ambitious, and unstoppable, we've already taken Cyprus, Malta, Portugal, Poland, and Serbia by storm. Our BRO team consists of 1,300 bright minds creating innovative ideas and products. We don’t follow formats. We shape them. We build what works, launch it fast, and make sure it hits.

We are looking for a skilled Senior Node.js Developer, who will join our team in the office in Yerevan.

✅ Requirements:
✔️Strong knowledge of JavaScript and the ECMAScript 6 standards
✔️3+ years of commercial experience with Node.js and Nest.js
✔️5+ years of commercial experience in web development
✔️Commercial experience of working with high loaded SQL or NO SQL databases
✔️Commercial experience of implementing the REST, GraphQL and WebSockets
✔️Understanding of the TDD principles and experience of writing tests
✔️Understanding of microservice architecture principles
✔️Experience of GIT version control system
✔️Experience with RabbitMQ
✔️Experience with Redis
✔️Experience with databases MongoDB, MySQL
✔️At least Intermediate lvl of English

✅ Will be a plus: 
✔️2+ years of hands-on experience developing over CI/CD/Micro Services architecture/Containers
✔️Experience with Kubernetes
✔️Experience with Nats
✔️Experience with TypeScript

✅ Duties and opportunities:

✔️In-house platform development
✔️3rd party API integrations
✔️Actively participate in developing new features from scratch

✅ We offer excellent benefits, including but not limited to:

🚀 Career growth opportunities in an international and dynamic environment;
📚 Opportunity to develop language skills with partial compensation for language courses;
🎁 Special gifts for birthdays, weddings, and newborns;
🏝️ 20 working days of paid annual vacation, plus paid sick leaves;
🍲 Office snacks and refreshments;
🏋️‍♂️ Sports package to support a healthy lifestyle;
🩺 Comprehensive medical insurance for you and your partner;
📍 Comfortable office with great facilities in a prime location;
 🎉 Exciting corporate events, team-building activities, and international company parties

Bold moves start here. Make yours. Apply today! 

Experienced Backend Engineer

📍 Location: Remote (Global, must overlap with US time zones)

💼 Full-time | Early-Stage Startup

About Us

We are an early-stage startup working at the intersection of AI agents, computer vision, and large-scale data analytics. Our mission is to help retailers and distributors gain real-time visibility into inventory, operations, and supply chains. As part of a lean and fast-moving team, you’ll have the chance to own core backend systems from day one and directly shape the company’s technical foundation.

The Role

We are hiring an experienced backend engineer to design and scale the services that power our AI agent–driven analytics and computer vision products. You’ll build APIs, pipelines, and distributed systems that process large volumes of real-world data, while also enabling integration with ML models and LLM-based agents. This role requires drive, a research mindset, and the ability to figure things out independently; perfect for someone who thrives in a startup environment with high autonomy and impact.

Responsibilities

• Architect and implement backend services and APIs (REST/GraphQL/gRPC)
• Build and optimize data pipelines for images, video, and transactional data
• Integrate and scale Python-based AI/ML models and LLM-driven agents into production systems
• Manage and optimize databases: SQL (PostgreSQL/MySQL) and NoSQL (MongoDB, Redis)
• Implement event-driven architectures (queues, streaming, pub/sub) for real-time workloads
• Ensure reliability, observability, and security across distributed services
• Collaborate closely with ML engineers, frontend engineers, and product teams
• Contribute to infrastructure best practices (CI/CD, containerization, monitoring, testing)
• Take ownership: research, learn, and deliver solutions with minimal supervision

Requirements

• Typically 5+ years of backend engineering experience, but we welcome exceptional candidates with fewer years if they have equivalent depth of experience
• Bachelor’s/Master’s in Computer Science, Engineering, or related field — or equivalent practical experience
• Strong proficiency in Node.js (Express, Nest, or similar) and Python (for AI/ML integration, data processing)
• Solid experience with databases: SQL + NoSQL (Postgres, MongoDB, Redis, etc.)
• Familiarity with microservices, event-driven systems, and async programming
• Hands-on with cloud environments (AWS/GCP/Azure), Docker, Kubernetes
• Experience with enterprise SaaS or large-scale distributed systems
• Proficiency with CI/CD pipelines, automated testing frameworks, debugging, and performance tuning
• Experience leveraging AI-accelerated development tools (e.g., Windsurf, Claude Code, Cursor, Copilot) to improve productivity, debugging, and code quality
• Excellent communication skills in English (written and spoken)
• Ability to work with US time zones (partial overlap required)
• Strong work ethic and ability to deliver independently in a startup environment

Preferred Qualifications

• Experience integrating or scaling AI agents, ML models, or LLM-driven services (e.g., OpenAI, Hugging Face, LangChain, vector databases)
• Experience with computer vision pipelines or unstructured (image/video) data at scale
• Familiarity with event streaming (Kafka, Pulsar, Pub/Sub)
• Experience with geospatial or time-series data
• Infrastructure-as-Code (Terraform, Helm, Pulumi, etc)
• Prior startup or 0→1 product build experience

Why Join Us

• Own and shape the core backend architecture of a high-growth AI startup
• Work on cutting-edge challenges in AI agents, LLMs, and computer vision at scale
• High autonomy, small and fun team
• Competitive compensation and the chance to grow with the company
• Work in a culture that values drive, resourcefulness, and independent problem-solving

Become part of United Tech as an experienced Node.js Backend Developer, contributing to high-performance, scalable products using modern technologies

About the team: join our Backend team, where collaboration and growth are at the heart of everything we do. We are a close-knit group of developers, Product Managers, DevOps, and QA specialists, all dedicated to helping our products thrive. With mentorship from seasoned experts and a strong sense of ownership, everyone here has a voice and can make a real impact.

Working in the social networking niche, we embrace challenges and celebrate progress. This is a dynamic field where you will stay on top of trends, tackle high-load systems, and dive into complex problems. The market is still growing, and there’s plenty of opportunity to carve out your own path and make a difference!
 

Know someone perfect for this role? Recommend a candidate and receive a bonus up to $1500
 

In this role, you will:
 

• Participate in team processes (grooming, sprint planning)
• Develop and deliver product tasks to the production environment
• Handle technical debt tasks
• Create technical designs for product epics
• Decompose epics into actionable tasks
• Investigate and resolve complex issues

It’s all about you:
 

• 4+ years of commercial backend development experience
• 3+ years of Node.js backend experience
• Proficiency with relational and non-relational databases (Postgres, MongoDB, Redis)
• Experience with SOA/Microservices architecture (communication, patterns, development process)
• Knowledge of WebSockets and messaging systems (RabbitMQ, Kafka)
• AWS experience (S3, Aurora, Cloudfront)
• Experience with scaling and high-load systems
• Strong Computer Science fundamentals
• Intermediate English level or higher

What we offer
 

• Care and support: 
• 20 paid vacation days, 15 sick days, and 6 additional days off for family events
• 100% medical insurance coverage
• Sports and equipment reimbursement
• Online yoga class with an instructor from the Ukrainian Yoga Federation
• Team building events, corporate gifts, and stylish merch
• Financial and legal support
• Position retention and support for those who join the Armed Forces of Ukraine
• Participation in social initiatives supporting Ukraine
   
• Comfortable working environment:
• Work from our Kyiv hub or remotely with a flexible schedule 
• Modern equipment or depreciation of your own tools
   
• Investment in your future:
• Collaborate with a highly-skilled team of Middle & Senior professionals, sharing practical cases and expertise in the social networking niche
• 70% of our heads and leads have grown into their roles here – so can you!
• Performance-oriented reviews and Individual Development Plans (IDPs)
• Reimbursement for professional courses and English classes
• Corporate library, book club, and knowledge-sharing events
  
   

Hiring process:

• Intro call
• Tech Interview
• Final Interview 
• Reference check
• Offer
   

Про компанію United Tech

United Tech is a Ukrainian team with over 250 people, and we’re growing more rapidly than ever before. We build mobile and web products for the social networking industry worldwide. Our products are well-known among users from the US, UK, Canada, and leading European, Middle East countries and Latin America. With 6 products in our portfolio, a Million new users and 15+ Million matches per month, we know how to constantly grow and reach top positions. Together, we’re a passionate team united by a founder’s mentality, result orientation, trust, and constant desire to improve. We maintain the working climate and operation of our products remotely. Whether you are in Ukraine or anywhere in the world, join us! Are you drawn to the bright energy of a traditional office setting? In that case, our welcoming office space in Kyiv is ready to embrace you. 

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