Jobs Node.js

We are looking for a Founding Engineer to join a fast-growing start-up developing a product for automated lead generation and recruitment outreach.  

Responsibilities: 

- Autonomously architect, prototype, & build the product from the ground up.

- Develop integrations with AI (e.g. Perplexity, OpenAI) & 3rd party API (e.g. CRMs).

- Leverage your prompt engineering skills to maximize the outcome.

- Horizontally work with founders in discussions on business & product topics.

Requirements: 

- 1+ years of experience in a SaaS/startup previously. 

- Senior-level engineer with 5+ years of software development experience. 
- Experience in RAG & AI agents development and prompt engineering.
- API development and integration experience.
- Database design and optimization (SQL).
- Development in cloud infrastructure (AWS/GCP/Azure).
- Patterns for asynchronous task processing (RabbitMQ, SQS, or similar).
- Experience with n8n/make will be a great plus.

- Authentic obsession with giving customers the best.
- Excellent verbal communication skills.

- Excellent English, strong B2 level minimum.

Job details:

• Full-time.
• Fully remote.
• Long-term.
• B2B contract.
• Start date — ideally ASAP / by mid-April.
• Also, you will get founding member equity % in addition to your fixed salary.

What else will you get:

- Learning how a startup grows.

- Direct impact on product and company strategy.

- Deliver value directly to paying B2B clients.

- Opportunity to build and lead a team and department.

- You will work with the most modern toolset (including Cursor in Agent mode).

The hiring process: 

• 45 min pre-screen interview with a recruitment manager
• 15-30 min call with the client
• a technical deep-dive interview, most likely with online coding (conducted by client)
• online call with the team or key team members

LineUp is a fast-growing IT outsourcing company with 13 years of experience. We are currently looking for a Middle Backend Develope to join a long-term product project.

You will become part of the Smart City ecosystem - a large-scale software product for the Middle East market. This is a fully agile, product-oriented environment with real users and a tangible impact on urban infrastructure.
 

Key Responsibilities:

• Develop and maintain robust backend applications using Node.js and NestJS in a monorepo and microservices environment.
• Embrace and operate within a T-shaped approach, being ready to extend expertise beyond backend tasks to ensure end-to-end delivery of features.
• Work with PostgreSQL (AWS RDS) and Redis to design, implement, and optimize database and caching solutions.
• Develop and maintain integrations with various AWS services including SQS, S3, Lambda, IAM, System Manager, EC2, and EKS/ECS for cloud-native applications.
• Contribute to containerization and deployment processes using Docker, including building images and pushing to registries, implementing and maintaining CI/CD pipelines using GitLab runners.
• Implement and configure monitoring and observability using Prometheus and Grafana to ensure system health and performance.
• Collaborate closely with stakeholders and other developers to understand business requirements, translate them into high-quality technical solutions that meet those needs.
• Troubleshoot and debug backend issues, optimizing code to enhance performance and maintainability.
• Participate in the agile development process, contributing to scram events, fostering a collaborative and cross-functional team environment.
• Stay current with the latest technologies and best practices, and promote continuous learning and self-development within the team. Mentor other team members, providing guidance and sharing your knowledge.

Qualifications:

• Minimum of 2 years of experience in backend development with a focus on Node.js, NestJS, and related technologies.
• Knowledge or experience in Frontend development (specifically Next.js) is a significant plus.
• Knowledge or experience with automated tests (integration, E2E) is a significant plus.
• Willingness and mindset to work in a T-shaped model, contributing to various stages of the development lifecycle.
• Familiarity with microservices architectures and monorepo environments.
• Experience with PostgreSQL (AWS RDS), Redis, and backend data management.
• Knowledge of AWS services including SQS, S3, Lambda, IAM, EC2, and EKS/ECS.
• Understanding of Docker and CI/CD pipelines, with some experience using GitLab runners.
• Familiarity with monitoring tools such as Prometheus and Grafana.
• Ability to document backend designs and processes clearly.
• Strong problem-solving skills and attention to detail, with a drive to create high-quality, performant code.
• Ability to work both independently and as part of a team in an agile environment.
• Good communication skills, with the ability to interact professionally with team members and stakeholders.
• English at Upper-Intermediate level and above.

What We Offer:

• Competitive salary.
• A collaborative and innovative work environment.
• Professional development opportunities.
• The chance to work on exciting and challenging projects.
• A supportive company culture.

About Us:

LineUp is a fast-growing IT outsourcing company with 13 years of experience. We are currently looking for a Senior Backend Develope to join a long-term product project.

You will become part of the Smart City ecosystem - a large-scale software product for the Middle East market. This is a fully agile, product-oriented environment with real users and a tangible impact on urban infrastructure.

Key Responsibilities:

• Architect and develop robust backend applications using Node.js and NestJS in a monorepo and microservices environment.
• Embrace and operate within a T-shaped approach, being ready to extend expertise beyond backend tasks to ensure end-to-end delivery of features.
• Design, implement, and manage highly scalable database solutions using PostgreSQL (AWS RDS) and caching strategies with Redis.
• Develop and maintain integrations with various AWS services including SQS, S3, Lambda, IAM, System Manager, EC2, and EKS/ECS for cloud-native applications.
• Manage and optimize containerization and deployment processes with Docker, including building and pushing to registries, and implementing CI/CD pipelines using GitLab runners.
• Implement monitoring and observability using Prometheus and Grafana to ensure system reliability and performance.
• Collaborate with stakeholders to gather business requirements and translate them into technical solutions, driving discussions at the architecture and implementation levels.
• Lead troubleshooting and debugging efforts to resolve complex backend issues and optimize system performance.
• Stay current with the latest technologies and best practices, and promote continuous learning and self-development within the team. Mentor other team members, providing guidance and sharing your knowledge.
• Participate in the agile development process, contributing to scram events, fostering a collaborative and cross-functional team environment.
• Development and maintenance of a high-level engineering culture within the team.

Qualifications:

• Minimum of 5 years of experience in backend development with strong proficiency in Node.js, NestJS, and related technologies.
• Knowledge or experience in Frontend development (specifically Next.js) is a significant plus.
• Knowledge or experience with automated tests (integration, E2E) is a significant plus.
• Willingness and mindset to work in a T-shaped model, contributing to various stages of the development lifecycle.
• Expertise in building and managing microservices architectures and a monorepo setup.
• Extensive experience with PostgreSQL (AWS RDS), Redis, and other backend data storage and caching technologies.
• Strong proficiency in AWS cloud services including but not limited to SQS, S3, Lambda, IAM, EC2, and EKS/ECS.
• Solid understanding of Docker, CI/CD pipelines, and experience with GitLab runners.
• Experience with monitoring tools such as Prometheus and Grafana.
• Proven ability to document backend architectures, designs, and processes clearly and comprehensively.
• Excellent problem-solving skills and attention to detail, with a passion for creating high-quality, performant code.
• Ability to work effectively both independently and as part of a team in an agile environment.
• Strong communication skills with the ability to interact professionally with stakeholders at all levels.
• English at Upper-Intermediate level and above.

What We Offer:

• A collaborative and innovative work environment.
• Professional development opportunities.
• The chance to work on exciting and challenging projects.
• A supportive company culture.

🌟 About SelfInspection

SelfInspection is a fast-growing AI-driven vehicle inspection platform transforming how leasing companies, fleets, and financial institutions process vehicle damage assessments.

We combine computer vision, automation, and modern cloud architecture to deliver scalable and intelligent inspection workflows.

We are building a robust, event-driven backend system — and we’re looking for a strong Senior Backend Engineer to help us scale it properly.

🧠 What You’ll Do

• Design and build scalable microservices using NestJS (TypeScript)
• Architect and maintain event-driven systems using Kafka / RabbitMQ
• Design clean domain-driven services (inspection flows, reports, billing, notifications)
• Work with PostgreSQL (schema design, optimization, migrations)
• Improve system reliability, observability, and performance
• Participate in architectural decisions (modular monolith vs microservices boundaries)
• Collaborate closely with frontend, QA, and AI teams
• Write clean, testable, production-ready code
• Help improve CI/CD and deployment pipelines (AWS environment)

🏗 Tech Stack

• Backend: NestJS (TypeScript)
• Architecture: Microservices, Event-Driven
• Messaging: Kafka and/or RabbitMQ
• Database: PostgreSQL
• Cloud: AWS
• Containerization: Docker
• CI/CD: GitHub Actions (or similar)
• APIs: REST (future: gRPC)

✅ Requirements

• 5+ years of backend development experience
• Strong experience with microservices architecture
• Hands-on experience with event-driven systems (Kafka or RabbitMQ)
• Deep knowledge of NestJS or Node.js backend frameworks
• Strong experience with PostgreSQL (indexes, performance tuning, transactions)
• Understanding of distributed systems challenges (idempotency, retries, eventual consistency)
• Experience designing APIs and maintaining clean contracts
• Startup mindset: ownership, autonomy, speed

🎯 Nice to Have

• Experience with Domain-Driven Design (DDD)
• Experience with inspection, insurance, fintech, or fleet systems
• Familiarity with Kubernetes
• Experience building high-throughput systems
• Knowledge of AI/ML service integrations

💼 What We Offer

• Work on a real AI product with global customers
• Strong technical ownership
• Fast-paced startup culture
• Flexible work schedule
• Competitive compensation
• Opportunity to shape architecture decisions

💡 Who Will Thrive Here

Someone who:

• Thinks in systems, not just endpoints
• Cares about architecture quality
• Can balance speed and correctness
• Takes ownership instead of waiting for tickets

We are evolving very quickly and now we’re looking for active and motivated Back-end developer to join our friendly team. 

Required Technologies / Frameworks: 
NestJS
Socket.IO
Swagger
Mongoose
MongoDB
Docker

Requirements:
2+ years of software development experience;
1+ years of experience with Node.js and NestJS;
Strong understanding of OOP principles and modern development practices;
Experience with Git;
Willingness to learn and grow with new technologies.

Responsibilities:
Developing new features for our products;
Maintaining and improving existing services;
Working with APIs and integrations;
Ensuring code quality and compliance with standards.

We offer:
Comfortable office in center of the city;
Competitive salary based on experience;
Paid sick leave;
24 days paid holiday. 

Test task required for the position. 

Just send your CV!

We’re looking for a pragmatic Node.js engineer who can help our non-technical team build and use AI-powered tools, agents, and reusable skills.

This is not a “deep architecture” or “big system design” role.

Your job is to:

• build useful AI-powered tools quickly
• create reusable “skills” and workflows
• simplify how non-technical people interact with AI
• teach others how to use and combine these tools

What you’ll do

• Build AI-powered internal tools (agents, workflows, assistants)
• Create reusable skills/modules that non-technical users can combine
• Integrate LLM APIs and connect them to internal data and tools
• Connect APIs (Slack, Google Sheets, CRM, etc.)
• Design simple workflows where AI helps automate decisions and tasks
• Help non-technical teammates:
  • understand AI tools
  • use them independently
  • combine skills into their own workflows

Example tasks

• Build an AI agent that generates reports from Google Sheets and sends summaries to Slack
• Create reusable “skills” like: lead enrichment, summarization, classification
• Build internal AI tools to assist non-tech teams in daily workflows
• Replace manual copy-paste work with AI-assisted automation

Who you are

• 2–5 years experience with Node.js / JavaScript / TypeScript
• Comfortable working with APIs and integrations
• Able to build simple tools quickly
• Can quickly dive into existing Jira tasks, codebases, and ongoing projects without long onboarding or heavy guidance

• Comfortable figuring things out independently from partially defined context

   

Bonus

• Experience building AI agents or using LLM APIs
• Experience designing reusable “skills” or modular workflows
• Basic frontend skills (React or similar)
• Familiarity with automation tools (n8n, Zapier, etc.)

Most important:

• you like making things simple
• you avoid overengineering
• you can explain technical concepts to non-technical people

Not a fit if you

• prefer building complex architecture over practical solutions
• only enjoy working with engineers
• need fully defined specs before starting

What success looks like

• Non-technical team automates parts of their own workflows
• Significant reduction in manual repetitive tasks
• Internal tools are actively used
• You become the go-to person for workflow improvements

Why this role matters

Instead of hiring more people, we want to multiply output using AI + reusable skills + internal agents.

You are the person who makes that practical and usable for the whole team.

Job Description

Join our Chatbot team and help shape the future of AI-powered customer experience at Wix. As an AI Engineer, you’ll drive the development of intelligent, context-aware features that elevate our Customer Care Chatbot into the go-to solution for users seeking guidance throughout their Wix journey. You’ll work end to end—researching cutting-edge AI methodologies, building scalable features, and ensuring they deliver real, lasting value to millions of users.

You will:

• Design, develop, and integrate AI-driven capabilities using state-of-the-art LLM and NLP technologies
• Conduct research and experimentation to identify innovative approaches and apply advanced models to real customer-care challenges
• Own feature development from ideation to deployment—partnering with product teams, defining requirements, estimating scope, implementing solutions, and monitoring performance
• Enhance system performance, stability, and reliability to ensure a seamless, always-available service
• Collaborate in architectural and technical discussions to continually improve system design and developer experience

Requirements

• 5+ years of experience as a Server Engineer
• Proven ability in designing server solutions, API design, and handling technical discussions
• Passion for product development
• Understanding of business objectives and goals and how to transform business problems into actionable tasks
• Strong communication skills 

Nice to have

• Experience implementing and integrating gen-AI models, particularly large language models (LLMs) into production systems
• Proficiency with Large Language Models, including prompt engineering, fine-tuning, automatic evaluation and Retrieval-Augmented Generation (RAG) – an advantage

About the Team

The Chatbot team’s mission is to make the Customer Care Chatbot the principal choice for users seeking solutions during their Wix experience. We are committed to developing an AI Chatbot that leverages Wix’s knowledge and relies on contextual cues to determine the most appropriate next action to facilitate the user’s journey.

About Wix

Wix makes it possible for anyone to succeed online.

Since 2006, we’ve grown to around 5,500 employees in 22 countries, launched over 40 products, and serve over 243 million users and their visitors worldwide.

At Wix, we push you to innovate, evolve in non-traditional ways, and collaborate. We operate in small teams that work closely together at a high level.

Although we’re already industry leaders in web creation and business, our work is nowhere near done. Our goal is to become the main engine of the Internet so we can create a more open web for all.

We’re proud to be an equal opportunity company. Wix was built around the idea that everyone has the right to be successful, online. This same vision defines us as a company: creating a work environment where everyone is welcome, and anyone has the right to succeed.

Eiravox is seeking a talented and driven Strong Senior Nest.js Developer to expand our growing backend team. We specialize in scalable, high-performance solutions for startups and established companies, focusing on AI-powered tools, cloud infrastructure, and modern web platforms. If you’re passionate about backend development and building robust APIs, we’d love to connect!

What You’ll Do:

✅ Develop high-quality back-end services using Nest.js and Node.js.
✅ Design and implement efficient, maintainable, and scalable architecture following SOLID principles and best practices.
✅ Build and integrate RESTful APIs and WebSocket services.
✅ Collaborate closely with front-end developers, DevOps, and product teams.
✅ Participate in code reviews, system design discussions, and performance optimizations.
✅ Write unit and integration tests for reliable software delivery.
✅ Stay up-to-date with new backend technologies and methodologies.

Requirements:

✅ 3+ years of professional backend development experience with Node.js and Nest.js.
✅ Strong proficiency with TypeScript and JavaScript (ES6+).
✅ Deep understanding of OOP, SOLID principles, and scalable architecture patterns.
✅ Experience with relational databases (PostgreSQL preferred) and ORM libraries (TypeORM, Prisma).
✅ Familiarity with AWS services (Lambda, RDS, S3) is a big plus.
✅ Experience with CI/CD pipelines and Docker.
✅ Knowledge of security best practices (GDPR, OWASP standards).
✅ Ability to work independently and deliver clean, well-documented code.

Tech Stack We Use:

Back-End:

• Node.js
• Nest.js
• PostgreSQL (Amazon RDS)
• AWS Lambda
• Terraform (CI/CD)

Front-End (if applicable):

• React.js
• Next.js
• TypeScript

Why Join Eiravox?

✅ Competitive salary based on skills and experience.
✅ Remote-first work environment with flexible hours.
✅ High-impact projects with startups and enterprise clients.
✅ Culture of innovation, transparency, and continuous improvement.
✅ Opportunities for technical leadership and growth.
✅ Regular team meet-ups and hackathons.

About Eiravox

Eiravox is a leading IT company focused on delivering sophisticated, business-centric technology solutions. Our core expertise includes:

✔ Web Development
✔ AI Development
✔ Microservices & Cloud Infrastructure

With over 50 successful product launches worldwide, we simplify software development and drive business growth. Headquarters: Europe.

Website: https://eiravox.com

Location: Remote (for our international client in Berlin)
Rate: €25–32/hr
Project Duration: 9 months (Full-time)
Start Date: ASAP
Project Language: English
 

About the Role

We are looking for a Software Engineer to join our Application Platform team and support a cloud migration project for our subsidiaries. The Application Platform team provides a wide range of cloud products for product teams, enabling users to derive maximum value from our services in a self-service model, operating under a ‘You Build It, You Run It’ philosophy.

Our platform integrates AWS services hosting over 1,000 services in EKS and Serverless environments, serving over 1 billion viewer requests daily. We manage CI/CD infrastructure hosted on Jenkins & JFrog, supporting more than 90 pipelines. Product teams monitor and observe their applications using Datadog.

Responsibilities

• Contribute to cloud migration projects and modernize legacy systems.
• Dockerize existing services and deploy them in managed Kubernetes environments.
• Migrate PostgreSQL databases to AWS RDS with minimal downtime.
• Develop and maintain REST APIs for internal and external services.
• Collaborate with product teams to ensure smooth operation and scalability.
• Mentor colleagues and share knowledge across the team.

Required Skills

• Strong experience with TypeScript and Node.js, as well as Java with Spring Boot.
• Proficiency with PostgreSQL.
• Solid understanding of Docker, networking, and Linux servers.
• In-depth knowledge of AWS services (e.g., CDK, Lambda, RDS, ALB, EC2) and APIs.
• Experience in creating and consuming REST APIs.

Soft Skills

• Pragmatic approach to simplifying complex systems.
• Product mindset with focus on user value.
• Ability to drive and explain technical decisions at varying levels of detail.
• Strong mentoring and knowledge-sharing skills.

Bonus Qualifications

• Experience with Tomcat, .NET, or PHP.
• Familiarity with PostGIS.
• Ability to read Vue.js code.
• Understanding of SOAP for legacy service migration.

Example Projects

• Dockerize a production service running on a VPS and deploy it to a managed Kubernetes environment.
• Migrate a PostgreSQL database from VPS to AWS RDS with minimal downtime.

Check Point is looking for Senior Full Stack Node.js Engineer to team in the network security field, striving to provide the leading SASE platform in the market. Our innovative approach, merging cloud and on-device protection, redefines how businesses connect in the era of cloud and remote work. Our team values collaboration, flawless execution, and an agile mindset. We offer continuous learning opportunities, including access to training programs, conferences, and workshops to help you grow professionally.

Join us and be part of a team that values innovation, collaboration, and excellence in cybersecurity!

RESPONSIBILITIES

• Take ownership of the end-to-end development process for software components/services, including research, design, development, testing, rollout, and monitoring.
• Contribute to key technological and architectural decisions to drive innovation and scalability.
• Mentor and guide other engineers within the team through activities such as code reviews, dedicated sessions, and pair programming.
• Analyze and enhance the efficiency, scalability, and stability of various system components.
• Collaborate closely with Designers, Product Managers, and Software Engineers to ensure the delivery of high-quality products to our customers.

SKILLS

• 5+ years extensive experience with Node.js/React/TypeScript.
• Proven track record of designing and building native-cloud web applications from scratch on AWS.
• Strong understanding of microservice architecture, including serverless (lambda).
• Experience working in Agile scrum teams.
• Solid grasp of design patterns, software development techniques, and clean code practices.
• A team player with a proactive and can-do approach.
• Experience with Test-Driven Development (TDD) and Behavior-Driven Development (BDD) is a plus.
• Bachelor’s degree in computer science/engineering.
• Upper-Intermediate level of English.

WE OFFER

• Work in a creative friendly environment using cutting-edge technologies.
• Work-life balance and flexible schedule.
• Competitive compensation with focus on your expectations; annual salary review.
• 24-day paid vacation and 100% paid sick leave.
• Financial support and legal support from our side.
• Professional, language and soft skills trainings.
• Health insurance coverage: individual and family, Fitness plan.

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're looking for a Senior Node.js Developer to join our team in our Warsaw office.

✅ 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 an Intermediate level 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.

We are looking for a Senior Full-Stack Node.js/React.js Developer with AI experience for R&D department 

Requirements:

• 5+ years of commercial experience with JavaScript
• Experience with React.js
• Experience with Node.js / Nest.js
• Strong understanding of OOP and design patterns
• AI experience
• English — B2
   

Responsibilities:

• Develop and maintain backend services and internal systems
• Deliver clean, maintainable, testable code
• Work with relational and NoSQL databases
• Collaborate with the team to design effective technical solutions
• Stay up-to-date with modern development trends

We offer:

• Regular salary reviews and opportunities for career growth
• Regular code reviews.

Backend Engineer (Integrations)

Cowchain blockchain development company is actively looking for Backend Engineer (Integrations) to join our development team.
Cowchain have successfully completed 150+ projects mainly on EVM-based blockchains such as Ethereum, Polygon, Arbitrum, Base including Coinmarketcap leaders with 180M+ total capitalization and 20M+ daily trading volume in Move2Earn, Play2Earn and DeFi industries.

Who we are?
We’re at the core of fintech innovation, building a decentralized financial ecosystem that merges traditional banking with blockchain and AI. Our mission is to make wealth accessible to all through products like hybrid card-crypto wallets, used by 100,000+ paying clients across 40+ countries. We’re a worldwide team working remotely from over 20 countries, operating from Dubai, seeking a Backend Engineer to own a 3rd-party providers integration vertical.

Key Responsibilities

Architecture & Development

• Focus on building integrations with 3rd-party providers
• Ensure compliance and tech alignment between internal team and external providers
• Collaborate with backend team on event-driven architectures (Kafka, NestJS microservices).
• Build and maintain APIs using Java and Node.js
• Continuous PostgreSQL database optimization 

Security & Reliability

• Conduct and supervise the QA process.
• Establish monitoring, alerting, and incident response standards

Culture & Collaboration

• Review architecture proposals and ensure alignment with tokenomics and business logic.
• Work closely with the CTO and Product Owner and Contribute to building engineering processes in an early-stage environment.
• Collaborate with Delivery Manager for rapid product delivery.

Additional Requirements

• 7+ years of backend software engineering experience, focusing on scalable systems. 
• Hand-on experience to modernize legacy systems and integrate new solutions
• Fluent English (written/spoken)

What else is important

• Location: Dubai-based or remote in EU timezone. Covered business trips every 2-3 months are possible.
• Close collaboration with three tech leads, CTO, and a delivery manager in a star team.
• Culture: Zero tolerance for conflicts, focus on business and results.

What we offer:

• Flexible working schedule, remote work.
• Competitive salary.
• Paid vacations, sick leaves.
• Comprehensive insurance (dental, vision, top Dubai hospitals). 
• Family relocation support: visas, tickets, document assistance. 
• Unlimited vacation (with reasonable use). 
• Access to top DeFi conferences, including our own events.
• 100% friendly/family team.

Cowchain blockchain development company is actively looking for Backend Engineer to join our development team.
Cowchain have successfully completed 150+ projects mainly on EVM-based blockchains such as Ethereum, Polygon, Arbitrum, Base including Coinmarketcap leaders with 180M+ total capitalization and 20M+ daily trading volume in Move2Earn, Play2Earn and DeFi industries.

Who we are?
We’re at the core of fintech innovation, building a decentralized financial ecosystem that merges traditional banking with blockchain and AI. Our mission is to make wealth accessible to all through products like hybrid card-crypto wallets, used by 70,000+ paying clients across 40+ countries. We’re a worldwide team working remotely from over 20 countries, operating from Dubai, seeking a Backend Engineer to own a tech vertical.

Role Overview

As Backend Engineer, you will own the development, support and optimization of the back-end services with the wider product ecosystem. 

You’ll maintain our production back-end services, ensuring all the issues are being monitored and fixed as well as architect new extended functionality and improve existing services.

Key Responsibilities

Architecture & Development

• Collaborate with backend team on event-driven architectures (Kafka, NestJS microservices).
• Build and maintain APIs using Java and Node.js
• Continuous PostgreSQL database optimization 

Security & Reliability

• Implement financial transaction flows, referral bonus system, and validation logic.
• Conduct and supervise the QA process.
• Establish monitoring, alerting, and incident response standards

Culture & Collaboration

• Review architecture proposals and ensure alignment with tokenomics and business logic.
• Work closely with the CTO and Product Owner and Contribute to building engineering processes in an early-stage environment.
• Collaborate with Delivery Manager for rapid product delivery.

Additional Requirements

• 7+ years of backend software engineering experience, focusing on scalable systems. 
• Hand-on experience to modernize legacy systems and integrate new solutions
• Fluent English (written/spoken)

What else is important

• Location: Dubai-based or remote in EU timezone. Covered business trips every 2-3 months are possible.
• Close collaboration with three tech leads, CTO, and a delivery manager in a star team.
• Culture: Zero tolerance for conflicts, focus on business and results.

What we offer:

• Flexible working schedule, remote work.
• Competitive salary.
• Paid vacations, sick leaves.
• Comprehensive insurance (dental, vision, top Dubai hospitals). 
• Family relocation support: visas, tickets, document assistance. 
• Unlimited vacation (with reasonable use). 
• Access to top DeFi conferences, including our own events.
• 100% friendly/family team.

United Tech is a global IT product company shaping the future of real-time social connection. With millions of users across North America, Europe, LATAM, and MENA, we build next-gen mobile and web apps for live-streaming and social networking. Our platforms enable connection at scale fast, interactive, and deeply engaging. The market is projected to exceed $206B by 2030, and we are already leading the evolution. Founded in Ukraine, scaling worldwide

About the product: Global video communication app, where you can meet new friends and communicate with people all over the world. You can co someone very smart, funny, pleasant, just a person of your type. But it’s always up to you whether to join chat or keep searching for another interesting person. We are proud of how many people we connect daily!

In this role, you will

• Take part in team processes (grooming, sprint planning)
• Develop and deliver product tasks to the production environment
• Work on reducing and preventing technical debt
• Create technical designs for product epics
• Decompose epics into clear, executable tasks
• Conduct technical investigations and propose solutions

It’s all about you

• 4+ years of commercial experience in backend development
• 3+ years of experience with Node.js backend development
• Experience with relational and non-relational databases (MongoDB, Postgres and Redis)
• Experience with SOA/Microservices (communication, development process)
• Experience with patterns (DDD, event-driven, SOLID, CQRS)
• Experience working with WebSockets (ws, socket.io)
• Experience working with messaging (BullMQ, RabbitMQ, Kafka)
• Experience with cloud providers (AWS, GCP, etc)
• Experience in scaling and high-load products
• Upper-Intermediate English or higher

What we offer

Care and support:

• 20 paid vacation days, 15 sick days, and 6 additional days off for family events
• Up to 10 additional days off for public holidays
• 100% medical insurance coverage
• Sports and equipment reimbursement
• 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
• Technical Interview
• Final Interview
• Reference check
• Offer