Jobs

We are looking for an experienced NestJS developer to support our backend development. The main focus will be building and maintaining RESTful APIs and ensuring secure integration with our authentication/authorization system.

You will work closely with our in-house team to implement new features, optimize performance, and help migrate from our current Adobe authentication setup to Keycloak.

Responsibilities:
- Design and implement RESTful APIs using NestJS
- Secure API endpoints with proper authentication and authorization
- Integrate with Keycloak for user management and custom authentication flows
- Collaborate with our team to understand requirements and deliver clean, maintainable code
- Write unit/integration tests to ensure reliability
- Participate in code reviews and propose improvementsRequirements
- Strong experience with NestJS
- Proven ability to build and scale RESTful APIs
- Familiarity with authentication/authorization best practices
- Good understanding of relational databases and ORMs
- Comfortable with Git workflowsNice to Have:
- Experience with Keycloak (or similar IAM solutions)
- Knowledge of AWS and Docker
- CI/CD pipelines setup experience (edited) 

On behalf of our Client, a well-established financial institution from the Caribbean region Mobilunity is looking for a Back-End Engineer (.NET /Node.js) for a long-term engagement.

Our Client is the largest bank in the Caribbean region that serves 14 countries/territories. The aim is to make this organization from a traditional bank into a new era of fintech, working on the edge of what current fintech may offer.

The Back-End Engineer will be pivotal in developing and optimizing server-side logic for our digital banking platforms, with specialized focus on Anti-Money Laundering (AML) compliance systems. The role involves ensuring the responsiveness and scalability of our applications, enhancing user experience, and maintaining data integrity while supporting financial crime prevention initiatives. Working closely with compliance engineers, front-end developers, and cross-functional teams, the Backend Developer will implement server-side solutions, integrate with regulatory systems, and handle secure data storage solutions for AML workflows.

Key Responsibilities:
1. Development and Maintenance:

• Develop and maintain scalable and efficient backend services for core banking and AML compliance systems.
• Write clean, maintainable, and efficient code, adhering to best practices and coding standards.
• Design and implement business logic for AML transaction monitoring, customer screening, Risk rating, Deferral and regulatory reporting systems.

2. API Development and Integration:

• Develop and maintain RESTful APIs for integration with front-end services, external regulatory databases, and third-party compliance tools.
• Integrate with sanctions databases (OFAC, EU, UN), PEP lists, and regulatory reporting systems.
• Ensure secure API endpoints for sensitive financial and customer data handling in compliance with AML regulations.
• Integrate third-party services and maintain data integrity across multiple systems.

3. Database Management and Security:

• Design and optimize database schemas for high-volume transaction processing and compliance data storage.
• Implement robust data protection measures for AML case management, audit trails, and regulatory reporting data.
• Ensure data integrity and consistency across AML systems, maintaining proper audit logs for regulatory compliance.
• Write and execute efficient database queries for real-time transaction monitoring and historical data analysis.

4. Testing and Optimization:

• Implement unit, integration, and performance tests to ensure robustness and reliability of backend services.
• Develop specialized tests for AML rule engines, transaction scoring algorithms, and compliance workflows.
• Optimize applications for maximum speed, scalability, and data security.
• Performance tune systems to handle high-volume transaction processing and real-time monitoring requirements.

5. Security and Compliance Implementation:

• Implement security measures specific to financial services and AML compliance requirements.
• Ensure proper handling of sensitive customer data and transaction information in accordance with regulatory standards.
• Develop and maintain secure interfaces for regulatory reporting and audit trail generation.

6. Collaboration and Documentation:

• Work closely with front-end developers, product owners, and other stakeholders.
• Collaborate with compliance teams to understand AML requirements and translate them into technical solutions.
• Maintain comprehensive documentation of developed features, APIs, and backend architecture.
• Document AML system integrations and compliance-related technical specifications.

7. Continuous Learning and Improvement:

• Keep abreast of the latest industry trends, technologies, and best practices in backend development.
• Stay updated on evolving AML regulations and financial crime prevention technologies.
• Suggest and implement new technologies and tools to enhance application quality and user experience.

Requirements:

• At least 5 years of proven experience as a Backend Developer with a strong portfolio of developed applications.
• Proficiency in server-side languages (Node.js, C#, .NET) and corresponding frameworks.
• Deep knowledge of programming and engineering principles (SOLID, clean architecture, event sourcing).
• Strong knowledge of SQL and NoSQL database technologies (MSSQL, MySQL, Oracle, MongoDB, Couchbase).
• Significant experience in developing and consuming RESTful APIs and web services for large-scale applications.
• Experience with version control systems, particularly Git, and collaborative platforms (GitHub, Jira, Microsoft Teams).
• Strong knowledge of web server technologies (Apache, Nginx, IIS) and security best practices.
• Excellent problem-solving skills, communication skills, and attention to detail.
• Upper-intermediate level of English.

Nice to have:

• Proficiency in server-side languages (Python, Java).
• Previous experience in financial services, fintech, or AML compliance systems.
• Knowledge of financial crime prevention, transaction monitoring, or regulatory reporting systems.
• Experience with containerization (Docker, Kubernetes) and cloud services (AWS, Azure, Google Cloud).
• Familiarity with microservices architecture and event-driven systems.
• Experience with CI/CD practices and DevOps methodologies.
• Knowledge of Agile and Scrum development methodologies.
• Understanding of financial regulations and compliance requirements (BSA/AML, OFAC, etc.).
• Experience with immutable infrastructure and infrastructure automation tools.

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

Come on board, and let’s grow together!

In partnership with one of the global consulting enterprises, on a large-scale digital program for a UK Telecommunication industry client, we are seeking a Senior Software Engineer (Node.js) to join the Information Syndication team. This team is responsible for building and maintaining the platforms and services that enable seamless distribution and syndication of information across multiple products and channels.

Overview

As a Senior Software Engineer in the Information Syndication team, you will design and build high-performance backend services and APIs using Node.js. You’ll work closely with architects, product managers, and other engineers to ensure the syndication platform is scalable, reliable, and secure. The role requires strong expertise in Node.js, cloud-native development, and API design, along with the ability to contribute to system architecture and mentor junior engineers.

Key Responsibilities

• Design, develop, and maintain backend services and APIs in Node.js.
• Collaborate with cross-functional teams to define and deliver syndication features and capabilities.
• Implement best practices for API design, security, and performance optimization.
• Ensure services are scalable and fault-tolerant, leveraging cloud-native patterns.
• Write automated unit and integration tests to ensure code quality and maintainability.
• Contribute to system design discussions and architectural decision-making.
• Mentor junior engineers and contribute to raising engineering standards within the team.
• Troubleshoot and resolve complex technical issues in production environments.

Must-Have Skills & Experience

• Strong hands-on experience with Node.js and JavaScript/TypeScript for backend development.
• Proven experience designing and building RESTful and/or GraphQL APIs.
• Solid understanding of cloud platforms (AWS preferred) and containerization (Docker, Kubernetes).
• Experience with databases (SQL and NoSQL) and caching solutions (Redis, Memcached).
• Familiarity with CI/CD pipelines and automated testing practices.
• Strong problem-solving skills and ability to work in an Agile environment.
• Excellent communication and collaboration skills.

Desirable

• Experience with message queues or event-driven architectures (Kafka, RabbitMQ, SNS/SQS).
• Knowledge of content syndication, publishing platforms, or large-scale data distribution systems.
• Exposure to monitoring and observability tools (Prometheus, Grafana, ELK).
• Experience in performance tuning and scaling high-throughput services.
• Prior experience in mentoring or leading small development teams.

Details:

Location: remote from Riga/Latvia, possible relocation

Hello! We are Leaply — an ecosystem of interconnected digital and physical products designed to help build healthy habits and improve the quality of life. We’re developing a range of B2C products for global markets, including the US, Tier 1, Europe, and beyond.

We launched in 2024 as a startup and have experienced explosive growth, achieving tenfold growth in the past six months. We’re targeting a fivefold growth this year, and we’ve already established market demand and a steady flow of users.

We have an ambitious vision of a mobile app that would revolutionize the way we build wellness habits. To bring this vision to life, we are assembling a team of top-tier professionals to build this app from the ground up.

At Leaply, we challenge traditional career paths — we value ownership over job titles, and impact over process. We move fast, think big, and expect every team member to contribute beyond their scope.

To bring our vision to life, we’re looking for a driven Backend Product Engineer who will:
— Collaborate on shaping the product solution scope according to business goals and user needs;
— Design, develop, deploy, and maintain scalable backend services and APIs. Ensure high performance, security, and reliability of our platform;
— Work through the entire iterative product development cycle and take end-to-end ownership of product features, from analyzing user problems to tracking business metrics and analytics.

What matters to us:
— 4+ years of experience in building and maintaining backend applications in Node.js/TypeScript;
— Hands-on experience with NestJs, GraphQL, Google Cloud, Docker, Kubernetes;
— Experience working in cross-functional teams;
— A proactive, responsible mindset with a focus on solving user and business problems;
— Passion for learning new technologies or solutions to improve product development;
— Upper-intermediate English level;
— You are ahead of the AI adoption curve.

 

Bonus points for:
— Previous work with data-driven decision-making, product analytics, and feature ownership culture;
— Experience in hiring and managing an engineering or product team;
— Hands-on experience with client-side technologies, data engineering, and/or Machine Learning.

What you can expect:
— Competitive compensation;
— Office in Warsaw or Kyiv, with perks (lunches, gym, health insurance);
— Full ownership of your area and a say in product strategy;
— Support from an experienced team with multiple successful exits;
— Access to internal communities in tech, product, marketing and payments;
— A meaningful mission — Leaply is about helping people live better lives, every day.

Leaply is backed by SKELAR, a venture builder with over 10 successful B2C businesses in its portfolio. SKELAR provides access to the best payment infrastructure for our business model, along with financial and legal support in our target locations. They also organize internal clubs focused on professional development in marketing, development, and payments. With SKELAR, there’s always someone to turn to for advice or assistance.

Beyond business, SKELAR supports the SKELAR Foundation, a charitable initiative created by employees to support the Ukrainian Armed Forces. Through this initiative, we create and fund large projects that help bring us closer to victory.

Join us in building the next big thing!

Senior Backend Developer (Node.js)

About Us

We are a leading global provider of video and audio advertising technology, helping top brands reach their target audiences through innovative programmatic solutions. Our platform leverages cutting-edge technology to offer real-time optimization, fraud detection, and a wide range of advertising formats across various devices. We are committed to redefining the digital advertising landscape and empowering our partners with the tools they need to succeed.

Role Overview

As a Senior Backend Developer, you will play a pivotal role in technically designing, developing, and maintaining new and robust backend services. You will work closely with our product and technical project managers to deliver high-quality solutions that meet our users' needs. In addition to your technical skills, we are looking for a strong leader who can independently manage and drive projects to completion.

Responsibilities

• Design, develop, and maintain robust and scalable backend systems using Node.js.
• Collaborate with the product team to understand business requirements and translate them into technical specifications.
• Lead and manage projects independently from inception to completion.
• Demonstrate experience in successfully leading projects alone.
• Optimize application performance and scalability.
• Integrate with third-party APIs and services.
• Implement and maintain secure coding practices.
• Contribute to the development and maintenance of our CI/CD pipelines.
• Mentor junior developers and share your knowledge and expertise.

Qualifications

• A Bachelor's degree in Computer Science, Software Engineering, or a related field from a reputable university.
• 4-5 years of hands-on experience as a backend developer, with a strong focus on Node.js. 
• In-depth knowledge of MySQL and Redis.
• Proven understanding and practical experience with AWS services, including Lambda, RDS, and Load Balancers.
• Experience with Docker and Kubernetes (K8s) environments.
• Ability to write effective automated tests for backend services.
• Excellent problem-solving and analytical skills.
• Strong communication and collaboration skills.
• Proven ability to lead and manage projects independently.
• Excellent spoken and written English.

Bonus Points

• Knowledge of additional programming languages or frameworks. (NestJS, etc.)
• Contributions to open-source projects.

What We Offer

• Opportunities for professional growth and development.
• A collaborative and supportive work environment.
• The chance to be part of a dynamic and innovative company.

If you are a passionate and skilled Senior Backend Developer who is looking for a challenging and rewarding opportunity, we encourage you to apply.

We are looking for an experienced Lead Full Stack Engineer to take a leading role in the development of a new Legislative Tracker platform, designed to monitor and analyze political and legislative developments in the UK. In this role, you will design and implement scalable, secure solutions while guiding key technical decisions and ensuring high-quality delivery.

In this role, you will work across the full stack, covering React frontends, Node.js services, and AWS-powered backends in close collaboration with client stakeholders.

Responsibilities:

• Ensure high-quality delivery covering both functional and non-functional requirements (security, performance, scalability etc)
• Participate in technical discussions and own key technical decisions, ensuring solutions are aligned with best practices
• Design and implement end-to-end features across frontend and backend in a fast-paced environment
• Communicate effectively with both technical and non-technical stakeholders from the client side on a daily basis
• Refine requirements, manage dependencies, and contribute to backlog prioritization and planning
• Engage independently with stakeholders to translate business needs into working solutions
• Contribute to platform improvements and technical strategy
• Drive engineering quality by reviewing code, contributing to testing and CI/CD, etc.

Frontend:

• 5+ years of commercial experience working as Front-end developer (JavaScript, TypeScript)
• Experience developing web applications using React
• Experience with NextJS, Styled Components, Jest, React Testing Library (Playwright/Cypress a plus)
• Experience with the App Router (Form Submission experience in the app router (Everything is forms))

Backend:

• 5+ years of commercial experience working as Node.js developer
• Expertise in working with MariaDB/MySQL, Dynamo DB, ElasticSearch, GraphQL
• Knowledge of AWS (Lambda) and microservices architecture, Typescript, MSSQL

General:

• Upper-intermediate+ English level
• Contribute high-quality code to the Political Intelligence platform and guide others through technical reviews
• Create technical design and define a general approach to build from scratch a Legislative Tracker platform following UK politics
• Hands-on involvement in CI/CD, quality assurance, testing activities, etc
• Comfortable working independently and engaging directly with stakeholders to clarify requirements

We are looking for an experienced Lead Full Stack Engineer to take a leading role in the development of a new Legislative Tracker platform, designed to monitor and analyze political and legislative developments in the UK. In this role, you will design and implement scalable, secure solutions while guiding key technical decisions and ensuring high-quality delivery.

In this role, you will work across the full stack, covering React frontends, Node.js services, and AWS-powered backends in close collaboration with client stakeholders.

Responsibilities:

• Ensure high-quality delivery covering both functional and non-functional requirements (security, performance, scalability etc)
• Participate in technical discussions and own key technical decisions, ensuring solutions are aligned with best practices
• Design and implement end-to-end features across frontend and backend in a fast-paced environment
• Communicate effectively with both technical and non-technical stakeholders from the client side on a daily basis
• Refine requirements, manage dependencies, and contribute to backlog prioritization and planning
• Engage independently with stakeholders to translate business needs into working solutions
• Contribute to platform improvements and technical strategy
• Drive engineering quality by reviewing code, contributing to testing and CI/CD, etc.

Frontend:

• 5+ years of commercial experience working as Front-end developer (JavaScript, TypeScript)
• Experience developing web applications using React
• Experience with NextJS, Styled Components, Jest, React Testing Library (Playwright/Cypress a plus)
• Experience with the App Router (Form Submission experience in the app router (Everything is forms))

Backend:

• 5+ years of commercial experience working as Node.js developer
• Expertise in working with MariaDB/MySQL, Dynamo DB, ElasticSearch, GraphQL
• Knowledge of AWS (Lambda) and microservices architecture, Typescript, MSSQL

General:

• Upper-intermediate+ English level
• Contribute high-quality code to the Political Intelligence platform and guide others through technical reviews
• Create technical design and define a general approach to build from scratch a Legislative Tracker platform following UK politics
• Hands-on involvement in CI/CD, quality assurance, testing activities, etc
• Comfortable working independently and engaging directly with stakeholders to clarify requirements

We are looking for a Senior Node.js Developer with 5–7 years of experience to join our team building tailor-made AI solutions. Our projects go beyond templates: from computer vision for object detection and counting, to process optimization in logistics and packaging, to generative AI for text, images, and voice, as well as intelligent chatbots for communication.

What you will do:

• Design and implement robust backend systems for AI-driven solutions
• Collaborate with data scientists and product teams to translate business needs into scalable code
• Optimize algorithms and workflows for performance and efficiency
• Contribute to architectural decisions and mentor peers

What we expect:

• 5–7 years of professional experience with JavaScript, Node.js
• Strong knowledge of software architecture and best coding practices
• Solid problem-solving mindset and ownership attitude
• Experience with AI/ML integration, APIs, or computer vision is a plus

We offer:

• Challenging, non-template projects with real impact
• Close collaboration with clients and decision-makers
• Remote work with a flexible schedule
• A culture where your ideas and expertise shape the final product

Workload: full-time
Start: asap
Duration: long-term
English: B2+
Seniority level: It can be middle plus or senior, but very important to pay attention to the requirements.

Client’s Continuous Security Validation enables companies to challenge, assess and optimize their cyber-security posture against the evolving cyberthreat landscape, simply and continuously.
It strives to bring the highest level of service to everything we do. Their team is made up of the very best people for the job and as they grow, they’re always on the lookout for people with the skills, experience, and personality that will let them both shine.

What Does the Team Do?
The AI team is an integral part of the Client’s R&D department. They develop innovative AI Agents (Agentic AI) that enable customers to operate, investigate, and analyze their environments intelligently and automatically through the client’s platform. In addition, the team researches and develops new AI models to enhance user experience, optimize processes, and strengthen the cybersecurity capabilities of their products.

Responsibilities

• Design and develop Agentic AI systems, models, and an advanced infrastructure stack.
• Build product components that integrate with internal systems, user experience, and advanced security features.
• Research new technologies, libraries, and solutions in AI and Cyber domains. Work in rapid sprints using Agile methodologies.
• Collaborate with developers and product teams to improve processes and design system architecture.
• Lead the adoption of advanced technologies and best practices in AI and Software Engineering.
   

Requirements and Experience

• Bachelor’s/Master’s degree in Computer Science, Engineering, or a related field.
• 4+ years of professional experience in software development of medium-to- large scale systems.
• Proven experience with Python, Node.js, NestJS, TypeScript/JavaScript, React, Redis, MongoDB, Kafka, AWS, NX.
• Hands-on experience with microservices, Docker, and Kubernetes. Strong background in software architecture and system design.
• Experience with LangGraph and LangChain – mandatory !!!
• Experience developing and integrating with MCP (Model Context Protocol) in AI – mandatory !!!
• Familiarity with cybersecurity – strong advantage.
•  Knowledge in MLOps, fine-tuning, and vector databases – advantage. Excellent problem-solving skills and ability to thrive under tight deadlines. Proactive mindset, team player, and ability to provide technical leadership.
• Must speak intermediate plus English - mandatory !!!
• Must be a team player, hard worker, trust worthy, reliable, responsible, motivated and a long term player - mandatory !!!

A rapidly growing German startup is developing an innovative platform that connects users with doctors for medical marijuana prescriptions. The project leverages AI to deliver smart, efficient, and accessible healthcare solutions in a dynamic regulatory environment.

Role Overview
The startup seeks a highly skilled Senior Backend Node.js Engineer for an initial 3-month trial, with potential for extension. The role focuses on building robust backend systems using Node.js and integrating AI-driven features, embracing a "vibe-coding" approach - creative, AI-assisted development using tools like GitHub Copilot.

Key Responsibilities

• Develop and maintain scalable Node.js backend services, including APIs and microservices.
• Integrate AI/ML pipelines (e.g., recommendation engines) to enhance platform functionality.
• Collaborate with teams to ensure secure, compliant, and user-friendly solutions.

• Tackle complex challenges in a fast-paced startup setting.

   

Required Skills

• 5+ years of Node.js backend development experience.
• Proven expertise in AI/ML integration and vibe-coding tools (Cursor or Windsurf, Claude Code, MCP, ToolHive, etc.)
• Proficiency in Express.js, MongoDB/PostgreSQL, AWS/GCP, and Docker.
• Familiarity with healthcare regulations (e.g., GDPR) is a plus.
• Fluent in English; 

English: b2

Node.js with TypeScript + MongoDB + AWS. This role requires an expert level of API development with MongoDB and deep knowledge of building scalable, high-performance backend services.
You will be responsible for designing and developing robust APIs, ensuring smooth data interactions, and delivering backend solutions that support our growing product.

Required skills
- Strong expertise in Node.js with TypeScript.
- Proven expert-level experience in MongoDB (schema design, query optimization, aggregation pipelines).
- Solid knowledge of AWS services for backend development (Lambda, S3, EC2, API Gateway, etc.).
- Experience building RESTful APIs and/or GraphQL APIs.
- Understanding of security, authentication, and authorization best practices.
- Ability to troubleshoot complex backend issues and optimize system performance.
- Strong communication and collaboration skills.Responsibilities
- Design, build, and maintain scalable APIs using Node.js (TypeScript).
- Work extensively with MongoDB, ensuring optimal schema design, indexing, and performance.
- Implement backend services that integrate seamlessly with AWS cloud infrastructure.
- Write efficient, testable, and reusable code while following best practices.
- Collaborate closely with frontend engineers, mobile developers, and product teams.
- Ensure backend systems are secure, performant, and scalable.
- Participate in code reviews and contribute to architectural discussions

TwinCore is an international IT company with offices in the USA and Europe. We specialize in .NET development and have successfully delivered 120+ projects in FinTech, e-commerce, healthcare, and logistics. Backed by a strong team, transparent processes, and steady growth since 2011.

We are currently looking for Node.js Backend Engineer for a six-month project under contract.

We expect you to have the following skills:

• Expertise in Node.js and building Backend-for-Frontend (BFF) services optimized for React/Next.js apps.
• Familiarity with authentication, caching strategies, and performance optimization for high-traffic retail platforms.
• Strong hands-on knowledge of GCP deployment pipelines, logging, and monitoring
• English proficiency at B1 level or higher

Our offer includes:

• Competitive salary based on the results of the technical interview (fixed rate)
• Full social benefits package
• Remote work
• No bureaucracy and progressive management
• Flexible working hours (you can adjust your active hours to fit your schedule)

Is a dynamic SaaS company, taking organizations on a transformative journey toward AI-driven business processes and services. With zero setup required, our conversational AI manages employees' requests, assists with queries, and accelerates the resolution of issues.
We are recognized as a leading innovator in the industry, featured in the Gartner Magic Quadrant for ITSM, and honored with AWS's prestigious Rising ISV Star Award. With over 4,000 clients across 140 countries and a daily impact on over 9 million end-users, we are committed to transforming the organizational service management landscape.
We are eagerly seeking a Senior Developer focusing on Node.js development. This role is not just about crafting and delivering exceptional products; it’s about pushing the boundaries of what's possible in AI-driven software development. As a Senior Developer in our team, you'll play a pivotal role in crafting cutting-edge solutions and pushing the boundaries of technology.
If you're passionate about innovation and eager to make a significant impact, this is the opportunity you've been looking for

Responsibilities:
 

• Lead the development and maintenance of high-quality software products using Node.js and SQL technologies.
• Design robust backend systems, user interfaces, effective APIs, and algorithms to drive our AI-driven initiatives forward.
• Guide and mentor developers, fostering their growth and development within our team.
• Collaborate with cross-functional teams to explore new AI, machine learning, and data science solutions, driving continuous innovation.

Requirements:

• 5+ years of hands-on experience in backend development in Node.js, including JavaScript and TypeScript.
• Deep expertise in SQL databases (MySQL).
• Familiarity with AI, machine learning, data science, and full-stack development-Advantage
• Strong analytical and problem-solving skills, with an ability to work in a dynamic, AI-centric environment.
• Excellent communication and teamwork skills
• Experienced with working in an agile, dynamic, fast-paced working environment

At FluidLabs, we are launching a new direction in collaboration with DocuSign — one of the world’s leading players in digital signatures and contract management.
This is a rare opportunity to join a large-scale project and become a top-tier expert across the entire DocuSign product ecosystem, building unique expertise with true global value.


Key responsibilities:

• Design, develop, and maintain back-end services using Node.js and TypeScript
• Build and optimize serverless applications on AWS Lambda
• Work with DynamoDB (data modeling, performance tuning, query optimization)
• Set up monitoring, logging, and alerting via AWS CloudWatch
• Implement and maintain secure authentication/authorization flows with OAuth2/OIDC
• Collaborate with front-end engineers, architects, and product managers to deliver scalable solutions
• Write clean, maintainable, and well-tested code (TDD when possible)
• Participate in code reviews, provide feedback, and ensure high code quality
• Contribute to technical discussions, propose solutions, and share knowledge with the team

• Troubleshoot production issues, optimize performance, and ensure system reliability

   

Must-have technical skills:

• Strong proficiency in TypeScript
• Hands-on experience with Node.js (building and maintaining production-grade applications)
• Proven experience with AWS Lambda (serverless architecture)
• Practical knowledge of AWS DynamoDB (NoSQL data modeling, queries, performance tuning)
• Experience with AWS CloudWatch (monitoring, logging, metrics, alerts)

• Solid understanding and implementation of OAuth2 / OIDC (authentication & authorization flows)

   

Nice to have:

• Experience working with DocuSign products and building integrations on top of them
• Hands-on experience with event-driven architectures (SQS, SNS, Kinesis, RabbitMQ, WebSockets)
• Familiarity with broader AWS ecosystem (API Gateway, S3, Step Functions, IAM policies)
• Solid grasp of CI/CD workflows (GitLab CI, GitHub Actions, or similar)
• Knowledge of software design principles (SOLID, DDD, TDD)

• Some exposure to frontend frameworks (React, Next.js) for seamless integration

   

What we offer:

• Long-term collaboration on meaningful projects
• A passionate team with a healthy, positive culture
• Enterprise-level projects with real technical challenges
• Room to grow — both professionally and personally
• Partial tax compensation
• Referral bonuses for successful candidate recommendations
• Paid holidays and time off
   

Work terms:

• Working hours: 11:00–20:00 (Kyiv time)
• Vacation: 24 paid days per year
• Trial period: 3 months
  
   

We are seeking a skilled Backend engineer to develop and maintain microservices using Node.js within an AWS serverless architecture.
The role involves designing RESTful APIs, working with DynamoDB and event-driven systems like SQS, and collaborating across teams to deliver scalable, high-performance cloud solutions.

Requirements:

• 5+ years of experience in JavaScript / Node.js backend development
• Deep understanding of AWS Serverless components: Lambda, API Gateway, DynamoDB, S3, SQS, Step Functions
• Experience with Infrastructure as Code (Terraform or CDK)
• Proficiency in writing unit, integration, and end-to-end tests
• Hands-on experience with CI/CD pipelines and Git-based workflows
• Strong understanding of asynchronous programming, API design, and error handling
• Familiarity with monitoring, logging, and observability tools
• Upper-Intermediate or higher level of English

Responsibilities:

• Develop and maintain backend microservices using Node.js in an AWS serverless environment
• Design and integrate RESTful APIs using API Gateway and Lambda
• Model and query data using DynamoDB and implement event-driven flows with SQS
• Write and maintain unit tests using tools such as Mocha, Chai, and Rewire
• Define infrastructure using Terraform, collaborating with DevOps and architecture teams for scalable infrastructure deployment
• Troubleshoot and optimize performance, reliability, and cost-efficiency of cloud-based systems
• Collaborate with product and frontend teams to ensure end-to-end feature delivery

Nice to Have:

• Experience with CI/CD pipelines and deployment automation
• Familiarity with monitoring and logging tools (e.g., CloudWatch, Datadog)
• Knowledge of authentication and security best practices in AWS

We offer:

• Flexible working hours
• Paid vacation and sick leave
• Managing your taxes and accounting
• Career and professional growth opportunities
• Optional benefits package that includes Health insurance, Gym membership, English courses, compensation of certification, courses, and training
• Creative and lively team of IT specialists, adequate management, and zero unnecessary bureaucracy