Jobs Node.js

We’re excited to offer a long-term opportunity for an experienced Back-end Developer (Node.js) to join a team of professional engineers and designers. Together, you’ll be working on a US-based product that’s set to make a significant impact on the PropTech scene. This role offers the chance to contribute to a major market and collaborate with top talent in a dynamic environment.
 

About ElevateOS Product

ElevateOS has been improving the resident experience for over seven years. We created a single, all-in-one platform that makes it easy for property managers and resident staff to work together. Our goal is simple: to provide the best experience for residents by replacing multiple, confusing apps with one easy solution.

This is a stable, long-term project that continues to grow, and you'll have the chance to be part of its ongoing success.

Our primary technology stack revolves around JavaScript. We use React for the front-end, Node.js for the back-end, and React Native for mobile development.

Requirements:

- 4-5+ years of development experience with Node.js;
- Practical knowledge of VanillaJS, Typescript, Express-like framework;
- Hands-on experience creating robust RESTful API’s and designing scalable back-end architecture;
- Proficiency with relational DB;
- Experience with integration with 3rd party REST and SOAP API's;
- Good knowledge of GIT;
- Experience delivering projects, using modern tools like CircleCI, Docker, Kubernetes and navigating through different environments like AWS, GCP.
- Good understanding of ECMAScript specifications;
- Proficient in the English language.

Additional (good-to-have) skills:
- Experience with MySQL, nginx, Stripe, Twilio, Redis
- Experience working in a product company rather than outsourcing.

What will your responsibilities include?
- Creating first-class back-end systems by writing clear, sustainable and well-tested code;
- Improving performance and refactoring existing code;
- Cooperating with the Product, UI/UX, QA and Front-end teams to fulfil project goals;
- Configure project environments and deployment procedures;
- Bugfix during the development process;
- Cover your code with unit tests;
- Write documentation.

We are looking forward to having you on board to contribute to our journey of transforming real estate property management!

Required skills:

echlexity is a product and services company building complex solutions for clients in the US and Europe. We're growing a team of engineers who care about clean architecture, high-quality code, and aren't afraid to take ownership.

• 3+ years of commercial experience with Node.js / NestJS
• Strong knowledge of PostgreSQL (schema design, indexing, query optimization, migrations)
• Hands-on experience with Redis (caching, queues, pub/sub)
• Practical experience with AWS (EC2, S3, RDS, Lambda, SQS / SNS, CloudWatch, etc.)
• Solid understanding of how to build scalable REST / GraphQL APIs
• Production-level TypeScript experience
• Knowledge of design patterns, SOLID, and clean architecture
• Experience with Docker and CI/CD
• Strong communication skills - English Upper-Intermediate or higher (written and spoken)
• Agentic coding skills - confident use of AI tools (Claude Code, Cursor, Copilot, etc.) to accelerate development, code review, testing, and documentation
  
  Nice to have:
• Experience with microservice architecture and message brokers (RabbitMQ / Kafka)
• Knowledge of Kubernetes / Terraform / IaC
• Experience with event-driven systems
• Writing unit / integration / e2e tests (Jest)
• Mentorship or tech leadership experience
   
• What we offer:
• 100% remote work from anywhere in the world
• Flexible schedule
• A large, interesting product with real technical challenges
• Modern stack and freedom to choose your tools
• Transparent communication, minimal bureaucracy
• Paid time off and sick leave
• Budget for learning, conferences, and AI tools
• Long-term contract
  
  About us Techlexity is a product and services company building complex solutions for clients in the US and Europe. We're growing a team of engineers who care about clean architecture, high-quality code, and aren't afraid to take ownership.

Come Back Agency supports US software and technology companies by running their hiring process. We work with delivery and leadership teams to define roles, screen candidates, and manage interviews. Successful candidates are hired directly by the company and become part of its team.

Employer information:
This position is with a US-based software company providing custom development and AI implementation for North American clients. The team builds and maintains production software, including AI-enabled systems, and works in long-term client engagements.
Team members operate as part of an internal, distributed team and collaborate directly with client stakeholders.

About the role:

We are looking for a talented Node.js Backend Developer to join our dynamic team. You will be responsible for developing and maintaining server-side logic, defining and maintaining the central database, and ensuring high performance and responsiveness to requests from the frontend. If you’re passionate about building scalable backend systems and have experience with Node.js, Express,Nest,js Sequelize,Prisma, Socket.io, and databases like Redis, PostgreSQL, and MongoDB, we’d love to hear from you!

What you will do:

• Develop, maintain, and improve backend services using Node.js, Express.js, and Nest.js.
• Design scalable and maintainable system architecture for web applications and services.
• Build and optimize RESTful APIs and ensure secure integration with internal and third-party systems.
• Work with PostgreSQL, Redis, and MongoDB for data storage, caching, and performance optimization.
• Implement real-time functionality using Socket.io or similar technologies.
• Develop and support file upload and processing flows using Multer or equivalent tools.
• Implement secure authentication and authorization mechanisms using JWT, OAuth, and role-based access control.
• Apply backend security best practices, including CORS, input validation, error handling, and access control.
• Optimize application performance, reliability, and scalability in production environments.
• Write clean, maintainable, and testable code following best engineering practices.
• Collaborate closely with frontend developers, QA engineers, and product teams to deliver end-to-end features.
• Integrate external APIs, payment providers, cloud services, and other third-party solutions.
• Contribute to the design and development of microservices and distributed systems.
• Use Docker for local development, service orchestration, and deployment consistency.
• Deploy, monitor, and maintain services on AWS or other cloud platforms.
• Participate in code reviews, technical discussions, and architecture decisions.
• Maintain and improve technical documentation for services, integrations, and internal processes.

What we are looking for:

• 2+ years of commercial backend development experience with Node.js.
• English level B2 or higher.
• 2+ years of experience with Express.js and Nest.js in production projects
• Solid experience with Prisma or other ORMs and a good understanding of database design principles.
• Strong knowledge of REST API design, integration patterns, and backend best practices.
• Practical experience with Socket.io or other real-time communication solutions.
• Strong knowledge of PostgreSQL and experience with Redis for caching and performance improvements.
• Working knowledge of MongoDB and understanding when to use relational vs non-relational databases.
• Experience with Docker in development and deployment workflows.
• Good understanding of AWS services such as EC2, S3, Lambda, or similar cloud platforms.
• Solid understanding of backend security practices: JWT, OAuth, CORS, validation, authorization, and secure API design.
• Good knowledge of Git and collaborative development workflows.
• Understanding of microservices architecture, service communication, and scalable system design.
• Strong problem-solving, analytical, and debugging skills.
• Ability to write structured, readable, and maintainable code with attention to quality.
• Good communication skills and ability to work effectively in a team environment.
• Experience participating in code reviews and improving engineering quality.

Nice to have:

• Familiarity with CI/CD pipelines.
• Experience with Kubernetes.
• Exposure to logging and monitoring tools (e.g., ELK, Prometheus).

Hiring stages: Recruiter screening → Technical interview (live coding) → Final culture fit interview.

What We Offer:

• Working hours aligned with US time zones, typically 16:00-00:00 Kyiv time.
• English lessons to support clear and confident communication.
• Paid vacation and sick days.
• Fully remote work.
• Opportunities for professional growth within the team.
• Structured, personalized onboarding to help you ramp up effectively.

Apply with your resume and a short note outlining your relevant experience. You can also send your resume directly through our website at comeback.ua. Selected candidates will be contacted by the Come Back Agency.

Responsibilities:

• Develop a gaming platform based on a microservice infrastructure using NodeJS from scratch.
• Maintain the legacy platform written and migrate functionality to a new platform.
• Participate in automating the CI/CD process.
• Communicate with 3'd party providers to integrate external APIs.
  
  Background Node.js 
• 2+ years of total backend software development experience
• Proficiency in JavaScript/Typescript using NodeJS (5+ years)
• Experience launching products from start to finish (incl. building CI/CD)
• Confident in unit, E2E testing using Jest/Mocha/Nock
• Experience with database management systems, SQL (MySQL, PostgreSQL), ORMs (PrismaORM, TypeORM, Drizzle, etc), and data migrations
• Experience with Message brokers: RabbitMQ, Apache Kafka
• Familiarity with WebSockets
• Familiarity with Docker, Kubernetes
• Experience integrating with various 3rd-party, preventing negative outcomes, and managing unexpected risks
• B2+ English proficiency, both verbal and written is required.
  
  We are offer
• Fully remote work with a flexible schedule.
• Competitive salary (paid in cryptocurrency or via B2B/FOP contract).
• 15 paid vacation days.
• 7 paid sick leave days.
• 6 paid public holidays.
• Direct impact on core processes in a dynamic online product focused on the US market.

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

Responsibilities:

• System design: database schemas, sequence diagrams, API
• Development of full-stack features with SPA/SSR on frontend and REST API on backend
• Implementation of test coverage
• Code review and team collaboration to produce high quality product
• Proactive monitoring of services through logging, metrics and alerting tools
• Configuration of CI/CD pipelines

Requirements:

• 3+ years of experience as NodeJS Fullstack Engineer
• Experience with TypeScript
• Experience with Next.js, React
• Experience with Nest.js
• Experience with REST API
• Experience with CI/CD: Docker, Helm, BitBucket/GitHub/GitLab
• Experience with PostgreSQL
• Experience with Redis
• Experience with RabbitMQ/Kafka
• Experience with Claude/Codex

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

Hi! We are looking for a Node.js Backend Developer (NestJS) to join our pack at SharksCode 🦈💙
SharksCode is a Ukrainian IT company that develops high-tech software solutions and B2B platforms, particularly in the iGaming industry.
  We are looking for a Node.js Backend Developer who will work on building scalable backend services and integrations within a distributed architecture. In this role, you will participate in designing and developing platform services, integrating external systems, and contributing to technical decisions that impact the overall product architecture.

We expect that you:

– Have 4+ years of commercial experience with Node.js development.
– Have 2+ years of experience with NestJS (or are ready to quickly adopt it).
– Have experience developing REST APIs and/or GraphQL using NestJS.
– Have strong proficiency in TypeScript.
– Have hands-on experience with MongoDB, MySQL, or PostgreSQL.
– Have experience integrating third-party APIs/services (e.g., sports feeds, payment gateways, etc.).
– Have experience working with message queues (RabbitMQ, Kafka, or similar).
– Understand distributed systems architecture.
– Have experience using Redis for caching and Pub/Sub (preferable).

Your future responsibilities:

– Design and develop backend services and product functionality.
– Build and maintain integrations with third-party financial and technical services.
– Develop public payment APIs and internal microservices.
– Participate in technical discussions and architecture decisions related to platform development.
– Ensure high code quality and follow engineering best practices.
– Share knowledge and contribute to the development culture within the team.

Nice to have:

– Experience working on high-load projects, especially with live data.
– Experience writing and maintaining automated tests (Unit, Integration, E2E).
– Experience with WebSocket, gRPC, or other real-time technologies.
– Knowledge of architectural patterns: CQRS, Event Sourcing, DDD.
– Experience with Docker, Kubernetes, and CI/CD.
– Experience in igaming/betting industry (optional, but a strong plus).

Interview stages:

🤝 Interview with Recruiter
🧠 Technical Interview
💙 Offer

We offer:

🌴 24 paid vacation days, 14 sick days, and 5 days off
⏰ Flexible start of the working day — from 9:00 to 11:00
🏥 Medical insurance
💰 Bonuses and performance-based rewards
🐶 Office in the center of Kyiv — pets are welcome, we are pet-friendly
💆 Lounge area in the office to recharge during the day
🎾 Padel tennis, football, and training at the polygon for those who enjoy active leisure
📚 Learning compensation, internal meetups and workshops, as well as access to the corporate LMS with courses
🎁 Corporate currency that can be exchanged for merch, gifts, or additional benefits

Backend Developer (Node.js) for the  international product IT company,  which provides a full-stack package of complex AdTech solutions for digital advertisers, publishers and ad agencies worldwide. 

  The company develops white-label platforms for enterprise clients—custom turnkey solutions to automate and optimize digital advertising.

Products company : SSP, DSP, Ad Exchange platforms.

Main markets - Tier 1-2 

The technical team - up to 30 people (CTO, Team Lead, Back-end -10, Front-end developers, QA, DevOps )

Project stack: Node.js (backend), NoSQL, SQL, Redis, MongoDB,  Linux.

Locations/Offices - Kyiv, Lviv, Odesa, Mykolaiv or remote.

 Requirements:

• At least 5 + years of backend development experience, with a strong focus on Node.js
• Deep understanding of asynchronous programming in Node.js and event loop
• Knowledge or  experience with high-load systems
• Familiarity with SQL, NoSQL, and in-memory key-value databases for data storage and optimization;
• Knowledge of network protocols such as HTTP, TCP, and FTP;
• Expertise in identifying and resolving issues efficiently;
• Experience or understanding unit testing;
• Experience with Linux servers, handling basic administration tasks;
• Performance optimization skills;

Responsibilities:

• Write clean, efficient, and maintainable code following best practices
• Develop and maintain scalable backend services using Node.js 
• Debug and resolve issues in the backend systems
• Manage and optimize SQL and NoSQL databases 
• Write and maintain unit tests to ensure code quality
• Collaborate with team lead, frontend developers, CTO, Delivery Coordinator and other team members
•  Continuously learn and apply new technologies to improve backend systems

We offer:

• Vacation 21 calendar days per year (15 working days) - cumulative, the balances are 

           carried over from year to year

• medical insurance
• days off - 7 days per year
• additional 1 day of absence per year on the occasion of celebrating Birthday
• 15 paid sick leave per year
• 15 unpaid leave per year
• days off on public holidays
• referral bonuses
• coworking compensation
• corporate technology

Requirements

Position name: Senior Node.js Developer(with AI agents experience)
Level: Senior
Hard skills:

• 6+ years of Software Engineering experience
• Strong experience with Node.js (Express.js, Koa.js, Nest.js)
• Strong Software Design knowledge: OOD, FP, Design patterns
• Practical hands-on experience with AI prompt engineering, leveraging ArgumentCode, ClaudeCode, Cursor, or equivalent developer-AI tools.
• Deep understanding of RESTful and GraphQL APIs, modern web performance, and security.
• Solid understanding of LLM context design, tool integration, and code-generation workflows.
• Excellent knowledge of modern systems architecture components including microservices, event sourcing, and distributed data processing systems
• Advanced experience with SQL databases, especially PostgreSQL
• Experience with Docker & CI/CD processes
• Experience with AWS (or similar services like GCP or Azure)
• Experience with Serverless framework, AWS Lambdas, AWS CloudFormation
• Knowledge of Agile (preferably SCRUM) development practices

Would be great 😎:

• Strong experience with TypeScript
• Experience as a Tech / Team Lead on projects
• A computer science, software engineering, or related field master’s or bachelor’s degree
• Hands-on experience with message queuing/delivery services (Amazon SQS, SNS, RabbitMQ, Kafka, etc.)

Responsibilities:

• Propose process improvements and take ownership of the full cycle of feature delivery
• Integrate and optimize AI/LLM workflows (e.g., OpenAI, Anthropic, or local models) through prompt design, argument-code, or Cursor-based pipelines.
• Actively participate in technical discussions
• Participate in architectural design sessions, overall team meetings, product meetings, and communities of practice
• Create architectural designs to illustrate high-level solutions for applications and feature requests
• Architect, design, and collaborate with the team to deliver features and services into production
• Write and implement efficient, scalable, and secure backend code
• Conduct code reviews, maintain technical documentation, and support deployed systems

English level: at least Upper Intermidiate

Уявіть, ви відповідаєте за бекенд high-load розподілені, орієнтовані на гравців промо-функції в найкращому iGaming продукті. Шукаємо Tech Lead: strong backend, message brokers, повний ownership. Ви вирішуєте, створюєте, впроваджуєте. Ми надаємо ремоут і найкращі умови ринку.

Focus: High-load, distributed, player-facing promo features (network promotions)

Role type: Hands-on Tech Lead (80% delivery / 20% team leadership)

Why this role

We’re scaling Promotional Features domain and building the Boosters direction further as part of our growth. This is a hands-on leadership role where you’ll personally build and ship production-ready features and own the technical direction of the Boosters team. Performance, scalability, and reliability are non-negotiable.

Boosters is responsible for player-facing network promotional features such as:

• Tournaments
• Free Spins
• Progressive Jackpots
• Smart Prize Drop Systems

Team & Collaboration model

Tech Boosters is an end-to-end cross-functional squad including:

• Full-stack & Backend Engineers
• Automation QA & Manual QA
• SRE

Product Boosters

• Product Manager
• Product Designer
• Product Analyst

There is no classic Product Owner/PM in the squad. You’ll work with a product commercial manager who acts as the customer – defines what is needed, why and how fast it is needed on the market. Your tech team owns how it will be built and when it will be delivered.

Main Responsibilities

– Own technical decisions and technical part of the products and architecture for Boosters services (hands-on, production-grade)

– Develop and maintain backend applications for promotional features

– Drive delivery as a key contributor: tech design → implement → test → release → operate

– Optimize existing systems for performance, scalability, and reliability in a distributed environment.

– Lead the team execution with a “PoC-first” approach: fast validation → measurable outcomes → production hardening

– Conduct code and architectural reviews; set engineering standards and best practices

– Be the go-to technical owner: any tech problem in the domain is your problem to solve (with the team)

– Participate in on-call rotation and continuously improve operability (monitoring, alerting, runbooks, incident reviews)

Mandatory Requirements

– Strong proficiency in Node.js and TypeScript (our primary backend stack). We’re also open to strong backend engineers from other ecosystems (e.g., Go, Java, C#, C++) who are ready to ramp up quickly

– Strong understanding of asynchronous programming and concurrency patterns

– Experience building distributed systems and working with messaging and coordination tools (e.g., Kafka, RabbitMQ, NATS, distributed locks)

– Experience with gRPC in production environments

– Solid knowledge of databases: relational (MySQL, PostgreSQL), columnar (ClickHouse), and NoSQL (DynamoDB, MongoDB)

– Experience with cloud platforms (AWS/GCP/Azure) and Kubernetes

– Skilled in building and maintaining unit and end-to-end tests

– Proven track record of delivering production-ready solutions

– Experience working with large-scale microservices architectures

– Degree in Computer Science or a related field (or equivalent practical experience)

Preferred additional qualifications:

– Understanding of application security and industry best practices

We offer

– Remote-first with flexible working arrangements across Europe or Ukraine

– Competitive compensation package (with performance-based bonuses up to 50%)

– Unlimited paid vacation & sick leave (B2B model)

– Premium health insurance (for you + 1 family member)

– Learning & development support (courses, certifications, mentoring, conferences)

– International exposure – attend industry expos, team gatherings & global meetups

We’re building a cross-browser Fingerprint SDK and a high-performance backend for fraud detection and risk analysis. 

We’re looking for a Software Engineer who enjoys
working close to the browser, handling large-scale data, and solving non-trivial engineering problems.

DARLY SOLUTIONS is an international IT company specializing in delivering innovative solutions across FinTech, MedTech, SaaS, etc.

With years of experience in web and mobile development, UI/UX design, Quality Assurance, AI, and machine learning, we pride ourselves on creating impactful products that drive success for our clients.

Since 2018, we have successfully completed over 250 projects.
Examples of our work across various domains can be found on our website - https://www.darly.solutions/

We leverage cutting-edge technologies to craft powerful, forward-thinking solutions tailored to our clients’ needs. Our team is proficient in a diverse range of tools, including Angular, NestJS, React, Vue, PHP, Ruby, NodeJS, and many others.
 

What You’ll Work On
- Develop and maintain a cross-browser Fingerprint SDK using Vanilla;
- JavaScript/TypeScript, focused on performance, accuracy, and resilience against ad blockers and privacy restrictions;
- Build backend services with Node.js (Express) to process and analyze large volumes of collected data;
- Work with ClickHouse for analytical workloads and MySQL for transactional data;
- Design and optimize raw SQL queries for high-performance data access;
- Contribute to fraud detection and risk analysis systems by identifying patterns and anomalies in data.

What We’re Looking For
- 3+ years of experience with JavaScript/TypeScript and raw Node.js (Express)
- Strong experience with JavaScript in the browser

- Experience writing and optimizing raw SQL queries
- Familiarity with high-volume data processing or analytics systems
- Bonus: experience with fingerprinting, anti-fraud systems, or cybersecurity

Nice to Have
- Experience dealing with ad blockers, tracking prevention (Safari/Firefox), or
similar constraints
- Background in security, fraud detection, or risk analysis

What we offer:

- Flexible work format - remote, 8-hour working day without time trackers;
- Competitive salary;
- TIght-knit and friendly team;
- Personalized career growth;
- Up to 50% coverage of the cost of professional courses;
- Vacation time, sick-leaves, national holidays ;
- Competitive bonuses for a personal recommendation of new employees;
-Professional development tools (mentorship program, tech talks and workshops);
- English classes with a teacher;
- Corporate events and team buildings.

Responsibilities:

• Develop and maintain scalable and efficient web applications.

• Work closely with front-end developers to integrate APIs and back-end logic.

• Design, implement, and maintain databases, ensuring their stability and scalability.

• Optimize applications for maximum speed and scalability.

• Collaborate with cross-functional teams to define and implement new features.

• Write clean, maintainable, and testable code following industry best practices.

• Leverage AI-assisted development tools to accelerate delivery, improve code quality, and streamline repetitive engineering tasks.

Requirements:

• 5+ years of experience in full-stack web development.

• Strong proficiency in back-end using Node.js

• Experience working with relational and non-relational databases (e.g., MySQL, MongoDB).

• Knowledge of front-end technologies (React.js, Vue.js, Angular) is a plus.

• Familiarity with version control systems (Git).

• Experience with APIs and microservices architecture.

• Practical hands-on experience with AI prompt engineering, leveraging Claude Code, Cursor, GitHub Copilot, or equivalent developer-AI tools.

• Solid understanding of LLM context design, tool integration, and code-generation workflows.

• Ability to effectively decompose complex back-end features into AI-assisted development tasks, accelerating delivery without sacrificing code quality.

Nice to have

• Experience with React Native

• Understanding of mobile performance optimization, memory management, and render cycles

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.

We invite a Senior Software Engineer with strong Node.js expertise and solid AWS knowledge to join our team. You'll work with a trusted leader in the Point-of-Sale industry with over 100,000 global installations. In this role, you’ll contribute to our client’s new initiative focused on creating data mapping between diverse menu order systems and integrating two distinct APIs to ensure seamless and accurate data transfer.

🟩 What's in it for you:

• Collaborate on a high-load, technically challenging backend project, expanding your expertise in API integration, data mapping, and data transformation
• Contribute to a global tech platform offering robust solutions for the restaurant and food service industry
• Influence technical best practices and mentor engineers, promoting a culture of quality and continuous improvement

✅ Is that you?

• 4+ years of commercial backend development experience with deep expertise in Node.js and TypeScript in production environments
• 2-3+ years of AWS experience (EC2, ECS, Lambda, SQS/SNS, CloudWatch, etc.)
• Solid experience with MongoDB
• Proven experience designing, building, and maintaining RESTful APIs
• Strong understanding of backend architecture and service design
• Experience writing unit and integration tests
• Experience with CI/CD pipelines and automated deployments
• Strong ownership mindset and ability to work independently, resolve complex issues, and deliver solutions
• Excellent communication and cross-functional collaboration skills
• Upper-Intermediate+ English level

Desirable:

• Experience mentoring or providing technical guidance to engineers
   

🧩Key responsibilities and your contribution

In this role, you’ll contribute to the design, development, and continuous improvement of high-loaded backend systems and services, ensuring technical quality and delivering bullet-proof solutions.

• Design, build, and maintain high-loaded backend systems and APIs using Node.js and AWS
• Develop new backend features and enhancements for production systems
• Support and troubleshoot production systems to ensure reliability and performance
• Identify and reduce technical debt and implement improvements to maintain code quality and reliability
• Write and maintain unit and integration tests to ensure code quality
• Collaborate with cross-functional teams to define requirements and deliver bullet-proof solutions
• Contribute to the continuous improvement of backend architecture and development practices
• Create and maintain clear, organized development documentation

• Project Description:

  The Carbon Capture Platform is designed to support the verification and management of CO₂ sequestration data from Carbon Capture and Storage operations. The system processes operational monitoring data, generates verifiable records, and enables the creation of digital tokens representing stored CO2.
  At the beginning of the engagement, the team will analyze the existing platform, including reviewing the architecture, evaluating the current codebase, and identifying technical issues, gaps, and potential risks.
  Based on this assessment, the team will work on resolving identified problems, improving system stability and scalability, and implementing required enhancements. The team will also continue development of new features and support onboarding of new customers, including integration with external data sources such as SCADA systems.
  The overall goal of the engagement is to ensure reliable operation of the platform, support its further development, and enable efficient integration of new users and data sources.

   

• Responsibilities:

  • Analyze the existing backend architecture and codebase to identify technical debt, performance issues, and design limitations
  • Support the team in evaluating the current data model, APIs, and data processing logic
  • Implement improvements to backend services to address identified architectural or performance issues
  • Develop and maintain backend APIs supporting data ingestion, system operations, and platform integrations
  • Implement new features and enhancements requested by the customer
  • Support integration of external systems such as SCADA platforms and industrial monitoring systems
  • Troubleshoot and resolve production issues affecting backend services
  • Collaborate with DevOps and QA teams to maintain system reliability and performance
   

• Mandatory Skills Description:

  • 5+ years of backend development experience
  • Strong experience with NodeJS and modern backend frameworks
  • Cloud Infrastructure: Hands-on experience with AWS services (specifically Lambda, RDS, and S3).
  • Python Proficiency: Practical experience with Python for backend logic or data processing (this is a must-have for this specific role).
  • Architectural Proficiency: Experience designing Microservices and robust REST APIs that handle high-throughput data ingestion.
  • Experience working with relational databases such as PostgreSQL
  • Basic understanding of blockchain integrations