Node.js Developer

🏢 Summary: Senior Backend Node.js Developer role focused on building and scaling an event-driven microservices trading platform. The position involves end-to-end development within a distributed architecture, ensuring high performance, scalability, and code quality. Fully remote B2B contract with overlap with NYC hours. 🗂️ Requirements: 4+ years web application development experience, Expert knowledge of Node.js, Expert knowledge of TypeScript, Experience with distributed systems architecture, Experience with Apache Kafka, Experience with Redis, Experience with Kubernetes, Experience with MongoDB, Experience with automated unit testing and TDD, Strong understanding of performance optimization and computational complexity, Knowledge of algorithms and design patterns, Broad knowledge of web technologies 📃 Skills: Node.js, TypeScript, Kafka, Redis, Kubernetes, MongoDB, Microservices, TDD, Algorithms, DesignPatterns, Web 🏢 Description: We are looking for a performance-driven backend Senior Node.js Developer who can help us bring our client's trading solutions to the next level of functionality, scalability, and user experience. They are actively developing a new event-driven microservices architecture to form a foundational platform for delivering new trading applications. You will be responsible for delivering software end-to-end , from liaising with product managers and designers, to coordinating across international development teams on engineering and architecture to working with QA and DevOps teams - all ultimately to deliver a quality, innovative product to the traders and investors who depend on the platform every day. Requirements: Fluent English language [both written and spoken] Education: at least Bachelor's Degree, preferably in Computer Science 4+ years' professional web application development experience Expert-level Node.js and TypeScript knowledge, and curiosity to learn more Broad knowledge of web platform and technologies Superior analytical and problem-solving ability Effective communication skills to work with different teams across an international company Experience with modern distributed systems and infrastructure technologies, including Apache Kafka, Redis, Kubernetes, and MongoDB Automated unit testing and test-driven development Robust understanding of performance issues, computational complexity, and code optimization. Familiarity and implementation of industry-standard algorithms and design patterns Proactive and team player who can deliver in a high-pressure demanding environment Nest.js – nice to have Offer details: 100% remote job preferrably at least 4-5 hours overlap with NYC working hours B2B contract rate up to 55 USD/h net

🏢 Summary: Remote Senior Backend Node.js Developer role focused on building and scaling an event-driven microservices trading platform. The position involves end-to-end development, collaborating across product, QA, and DevOps to deliver high-performance, scalable trading solutions. B2B contract with overlap required with NYC working hours. 🗂️ Requirements: Bachelor’s Degree in Computer Science or related field, 3-5 years professional web application development experience, Expert-level Node.js knowledge, Expert-level TypeScript knowledge, Experience with distributed systems, Experience with Apache Kafka, Redis, Kubernetes, MongoDB, Experience with automated unit testing and TDD, Strong understanding of performance optimization and computational complexity, Knowledge of algorithms and design patterns, Fluent English (written and spoken) 📃 Skills: Node.js, TypeScript, Kafka, Redis, Kubernetes, MongoDB, Microservices, TDD, Algorithms, DesignPatterns, Web, DistributedSystems 🏢 Description: We are looking for a performance-driven backend Senior Node.js Developer who can help us bring our client's trading solutions to the next level of functionality, scalability, and user experience. They are actively developing a new event-driven microservices architecture to form a foundational platform for delivering new trading applications. You will be responsible for delivering software end-to-end , from liaising with product managers and designers, to coordinating across international development teams on engineering and architecture to working with QA and DevOps teams - all ultimately to deliver a quality, innovative product to the traders and investors who depend on the platform every day. Requirements: Fluent English language [both written and spoken] Education: at least Bachelor's Degree, preferably in Computer Science 3-5 years' professional web application development experience Expert-level Node.js and TypeScript knowledge, and curiosity to learn more Broad knowledge of web platform and technologies Superior analytical and problem-solving ability Effective communication skills to work with different teams across an international company Experience with modern distributed systems and infrastructure technologies, including Apache Kafka, Redis, Kubernetes, and MongoDB Automated unit testing and test-driven development Robust understanding of performance issues, computational complexity, and code optimization. Familiarity and implementation of industry-standard algorithms and design patterns Proactive and team player who can deliver in a high-pressure demanding environment Nest.js – nice to have Offer details: 100% remote job preferrably at least 4-5 hours overlap with NYC working hours B2B contract rate up to 50 USD/h net Don't hesitate and apply now!

🏢 Summary: Senior Node.js Developer role focused on building and scaling the backend API layer of an IoT platform for monitoring and optimizing energy usage in buildings. The position involves developing distributed backend systems using TypeScript, Node.js, and Kubernetes, and integrating with IoT devices and analytics modules. The role requires delivering high‑performance, scalable solutions in a cloud-based environment. 🗂️ Requirements: Minimum 5 years of commercial backend development experience, Strong knowledge of Node.js, Strong knowledge of TypeScript, Understanding of distributed systems, Experience with scalable backend design, Experience with containerized or cloud environments, Experience with Kubernetes, Ability to work in Agile environment, Fluency in English, Residing in Poland 📃 Skills: Node.js, TypeScript, Kubernetes, IoT, APIs, Backend, Cloud, DistributedSystems, Agile 🏢 Description: We are looking for a Senior Node.js Developer to join a project for a leading global energy‑tech company. You will help build an intelligent platform used to monitor and optimize energy usage in buildings. The work combines backend development, IoT integration, and modern cloud technologies. Your tasks Develop backend applications that provide the API layer of the IoT platform using TypeScript and Node.js Build and maintain backend services supporting mobile and web solutions Use Node.js, TypeScript, and Kubernetes to deliver reliable and scalable systems Integrate backend features with IoT devices, analytics modules, and other platform components Ensure high performance, clean architecture, and smooth cooperation with other teams Requirements Minimum 5 years of commercial experience in backend development Strong knowledge of Node.js and TypeScript Understanding of distributed systems and scalable backend design Experience with containerized or cloud‑based environments (e.g., Kubernetes) Ability to work in an Agile environment and deliver high‑quality code Fluency in English Residing in Poland required

🏢 Summary: Backend Developer role focused on modernizing and transforming legacy sales systems using Node.js and .NET technologies. The position involves building and maintaining APIs, developing databases, and contributing to an event-driven architecture in an AWS-based environment. The role combines hands-on backend development with active participation in deployment processes and system evolution. 🗂️ Requirements: 5-6 years of recent Node.js development experience, 2-3 years of recent .NET development experience, Experience building and maintaining APIs, Experience with PostgreSQL and DynamoDB databases, Experience working with event-driven architecture, Experience with AWS services, Ability to write modern, testable, high-quality code, Experience with deployment automation and CI/CD pipelines 📃 Skills: Node.js, TypeScript, JavaScript, .NET, AWS, Lambda, DynamoDB, RDS, ECS, CDK, PostgreSQL, Kafka, EventBridge, GitLab, CI, Docker, Localstack 🏢 Description: We're seeking an experienced & energetic Backend Developer specializing in TypeScript/JavaScript/.NET to enhance the global Sales ecosystem. This role focuses on transforming backend systems, emphasizing proactive development and team empowerment. Candidates should bring a blend of Node.js and .NET expertise to the table, along with a collaborative spirit and a commitment to writing modern, testable code. Our Client’s team, comprising about 25 individuals, is modernizing legacy systems to fulfill local market needs while improving our processes continually. If you're motivated by challenges and have a passion for creating high-value solutions, we want to hear from you! What we offer: Rate: 40-45 euro/h +VAT Remote role B2B Contract Main Responsibilities: Drive initiatives and collaborate with team members on larger projects. Fix bugs and implement smaller enhancements across the application. Participate in creating and maintaining APIs using AWS services. Develop and improve databases with a focus on PostgreSQL and DynamoDB. Contribute to an event-driven architecture utilizing Kafka and AWS EventBridge. Manage deployment processes using AWS CDK and GitLab CI. Support legacy system maintenance and modernization. Key Requirements: At least 5-6 years of recent experience as a Node.js Developer. 2-3 years of recent experience with .NET. Energetic and inspiring personality who thrives on challenges. Hands-on work ethic in collaboration with team members. Proficiency in writing modern, testable, and high-quality code. Natural inclination towards evolutive maintenance. Nice to Have: AWS experience (Serverless Lambda, DynamoDB, RDS, ECS, AWS CDK). Knowledge of Localstack. Experience with Docker. Other Details: This position allows for team activities at least twice per year in Sweden, with a focus on modernizing our legacy systems into proactive, quality-focused solutions. Join a team of about 25 members dedicated to driving transformative change in our sales ecosystem.

🏢 Summary: B2B full-time remote position for a Senior Node.js / TypeScript Engineer to design and develop cloud-native, event-driven backend systems. The role focuses on building scalable solutions using serverless architecture, integrating APIs, and contributing to technical decisions with strong ownership. Work involves Node.js, TypeScript, AWS, and Cloudflare-based environments with emphasis on code quality and system reliability. 🗂️ Requirements: Commercial experience as Senior Node.js / TypeScript Developer, Strong knowledge of TypeScript in strict mode, Experience with Node.js backend development, Understanding of event-driven architecture and queues, Experience designing and integrating REST API and GraphQL, Experience with cloud or serverless environments, Ability to work independently and take ownership, Experience ensuring code quality and testing 📃 Skills: Node.js, TypeScript, React, Next.js, AWS, Cloudflare, Workers, Wrangler, REST, GraphQL, Webhooks, HMAC, Queues, Drizzle, SQLite, pnpm, CI/CD, CircleCI, CDN, Heroku 🏢 Description: Forma współpracy B2B Stawka: do 130 PLN/h Full-time Praca zdalna Szukamy Senior Node.js / TypeScript Engineera do zespołu rozwijającego nowoczesne produkty oparte o architekturę event-driven i rozwiązania serverless/cloud-native. Pracujemy w stacku opartym o Node.js, TypeScript, React/Next.js, AWS oraz Cloudflare Workers. Duży nacisk kładziemy na jakość kodu, ownership i samodzielność w projektowaniu rozwiązań. Stack technologiczny Node.js TypeScript (strict mode, typy generyczne, Zod) React.js / Next.js AWS Cloudflare Workers + Wrangler REST API / GraphQL Webhooks + HMAC signature verification Queues / event-driven architecture Drizzle ORM + SQLite pnpm workspaces / monorepo CI/CD (CircleCI lub podobne) CDN Heroku (nice to have) Czym będziesz się zajmować Projektowaniem i rozwijaniem backendu w Node.js i TypeScript Tworzeniem oraz utrzymaniem integracji REST API i GraphQL Budowaniem rozwiązań opartych o Cloudflare Workers Pracą z webhookami, kolejkami i architekturą event-driven Rozwojem systemów działających w środowisku cloud/serverless Współtworzeniem architektury i podejmowaniem decyzji technicznych Dbanie o jakość kodu, testy i stabilność systemu Współpracą z frontendem oraz product teamem Szukamy osoby, która Ma komercyjne doświadczenie jako Senior Node.js / TypeScript Developer Bardzo dobrze zna TypeScript i pracowała w strict mode Rozumie architekturę event-driven, kolejki i idempotency Projektowała i integrowała REST API / GraphQL Potrafi pracować samodzielnie i bierze ownership za rozwiązania Zna nowoczesne podejście do developmentu backendowego i cloud-native Dobrze odnajduje się w środowisku produktowym Mile widziane Doświadczenie z Cloudflare Workers Znajomość Drizzle ORM Doświadczenie z HubSpot API lub Zephr API Praca w monorepo / pnpm workspaces Doświadczenie z CircleCI Znajomość Heroku

🏢 Summary: Backend Developer role focused on modernizing and transforming legacy sales systems using Node.js and .NET technologies. The position involves building and maintaining APIs, databases, and event-driven architectures within AWS, while supporting deployment and continuous improvement processes. The role emphasizes proactive development, high-quality testable code, and collaboration on large-scale backend initiatives. 🗂️ Requirements: 5-6 years experience with Node.js, 2-3 years experience with .NET, Strong proficiency in TypeScript and JavaScript, Experience building and maintaining APIs, Experience with PostgreSQL and DynamoDB, Experience with event-driven architecture, Experience with AWS services, Ability to write modern, testable, high-quality code, Experience with CI/CD pipelines, Experience maintaining and modernizing legacy systems 📃 Skills: Node.js, TypeScript, JavaScript, .NET, AWS, Lambda, DynamoDB, PostgreSQL, RDS, ECS, Kafka, EventBridge, CDK, GitLab, CI, Docker, Localstack 🏢 Description: We're seeking an experienced & energetic Backend Developer specializing in TypeScript/JavaScript/.NET to enhance the global Sales ecosystem. This role focuses on transforming backend systems, emphasizing proactive development and team empowerment. Candidates should bring a blend of Node.js and .NET expertise to the table, along with a collaborative spirit and a commitment to writing modern, testable code. Our Client’s team, comprising about 25 individuals, is modernizing legacy systems to fulfill local market needs while improving our processes continually. If you're motivated by challenges and have a passion for creating high-value solutions, we want to hear from you! Main Responsibilities: Drive initiatives and collaborate with team members on larger projects. Fix bugs and implement smaller enhancements across the application. Participate in creating and maintaining APIs using AWS services. Develop and improve databases with a focus on PostgreSQL and DynamoDB. Contribute to an event-driven architecture utilizing Kafka and AWS EventBridge. Manage deployment processes using AWS CDK and GitLab CI. Support legacy system maintenance and modernization. Key Requirements: At least 5-6 years of experience as a Node.js Developer. 2-3 years of experience with .NET. Energetic and inspiring personality who thrives on challenges. Hands-on work ethic in collaboration with team members. Proficiency in writing modern, testable, and high-quality code. Natural inclination towards evolutive maintenance. Nice to Have: AWS experience (Serverless Lambda, DynamoDB, RDS, ECS, AWS CDK). Knowledge of Localstack. Experience with Docker. Other Details: This position allows for team activities at least twice per year in Sweden, with a focus on modernizing our legacy systems into proactive, quality-focused solutions. Join a team of about 25 members dedicated to driving transformative change in our sales ecosystem.

🏢 Summary: Long-term remote B2B contract for a Senior Node.js Developer to extend and maintain a Commercial Data Manager (CDM) platform and take technical ownership of HubSpot backend. The role focuses on backend development, API design, microservices, and cloud-based infrastructure in close collaboration with architects. Project runs until August 2026 with possible extension. 🗂️ Requirements: 6+ years backend development experience, 4+ years Node.js experience, 3+ years TypeScript experience, Experience with REST APIs and GraphQL, Experience with microservices architecture, Experience with PostgreSQL, MySQL, MongoDB, Experience with AWS, Experience with Docker and Kubernetes, Experience with Prometheus, Grafana or ELK, Strong DevOps mindset, English level B2 or higher 📃 Skills: Node.js, TypeScript, REST, GraphQL, Microservices, PostgreSQL, MySQL, MongoDB, AWS, Docker, Kubernetes, Prometheus, Grafana, ELK, Kafka 🏢 Description: We are looking for Senior Node.js Developers to join a long-term remote project for a global digital transformation company. You will work on extending and maintaining an in-house Commercial Data Manager (CDM) platform and take technical ownership of HubSpot (built previously by an external agency).Work split: 70% CDM / 30% HubSpot , working closely with the architect. Location: Remote (EU / Poland) Contract: B2B Start: 02 Mar 2026 Duration: Until 31 Aug 2026 (extension likely) Language: English B2 Responsibilities Develop and extend backend services for the Commercial Data Manager (CDM) Take ownership of HubSpot backend maintenance and further development Design and implement REST / GraphQL APIs and microservices Work closely with architects and engineering teams Support team growth through technical leadership and knowledge sharing Ensure high code quality, scalability, and reliability Must-Have Skills 6+ years of backend development experience 4+ years with Node.js 3+ years with TypeScript Experience with REST APIs / GraphQL / microservices Databases: PostgreSQL, MySQL, MongoDB AWS , Docker , Kubernetes Monitoring/logging: Prometheus, Grafana, ELK Strong DevOps mindset English B2 Nice to Have Distributed systems Kafka or other message brokers What We’re Looking For Senior engineers who are proactive, confident in decision-making, willing to take ownership, and strong team players. 📩 Apply: marcillina.tietjen@dcvtechnologies.co.uk

🏢 Summary: The offer is for an experienced Node.js Engineer to design, build, and scale backend services for a modern data-driven platform. The role involves developing REST/GraphQL APIs, contributing to system architecture, and owning the full development lifecycle in an Agile environment. The position requires close collaboration with cross-functional teams and active participation in technical decision-making. 🗂️ Requirements: 5+ years of experience with JavaScript and Node.js, Strong proficiency in TypeScript, Experience designing and building REST or GraphQL APIs, Knowledge of relational and NoSQL databases, Experience with AWS services, Understanding of software architecture and scalable systems, Experience with Express or Next.js frameworks, Knowledge of web fundamentals and security best practices, Fluent English (B2+), Availability overlapping with US Eastern Time core hours 📃 Skills: JavaScript, Node.js, TypeScript, REST, GraphQL, MySQL, MongoDB, Redis, AWS, EC2, Lambda, SQS, Express, Next.js, CORS, OWASP, Scrum 🏢 Description: We are looking for an experienced Node.js Engineer to join a team building and scaling a modern data-driven platform. ✅ Your responsibilities: Design, build, and maintain backend services using Node.js Develop scalable APIs (REST / GraphQL) Contribute to system architecture, performance, and scalability improvements Own the full development lifecycle: implementation, testing, deployment, and maintenance Collaborate closely with product, frontend, and DevOps teams in an Agile (Scrum) environment Participate in technical decision-making and drive best practices 🧠 Our requirements: 5+ years of experience with JavaScript / Node.js Strong proficiency in TypeScript Hands-on experience designing and building RESTful and/or GraphQL APIs Solid understanding of databases (relational and NoSQL, e.g., MySQL, MongoDB, Redis) Experience with AWS (e.g., EC2, Lambda, SQS) Good understanding of software architecture and scalable systems Experience with frameworks such as Express or Next.js Knowledge of web fundamentals (e.g., CORS) and security best practices (OWASP) Ability to work independently and support team-level technical decisions Fluent English (B2+) Availability overlapping with US Eastern Time core hours 🌟 What we offer: Remote work Flexible cooperation model (B2B / employment contract) Opportunity to work on a scalable, data-focused platform Collaboration with a highly skilled engineering team Real impact on technical decisions and system architecture

🏢 Summary: B2B contract role for a Backend Developer to build and maintain scalable microservices in an Ad Tech platform using Node.js, Nest.js, and TypeScript. The position focuses on backend architecture, performance, and integration within a fully remote team based in Romania. Initial 6-month project with possible extensions. 🗂️ Requirements: Strong experience with Node.js, Strong experience with Nest.js, Strong experience with TypeScript, Proven experience building scalable backend microservices, Experience with AWS Lambda or serverless frameworks, Experience working in agile teams 📃 Skills: Node.js, Nest.js, TypeScript, AWS, Lambda, Serverless, Microservices, REST, CI/CD, Git 🏢 Description: Backend Developer (Node.js) – Integration & Backend Team Work model : fully remote in Romania Assignment type : B2B Project length : 6 months + extensions. Project language : English. Industry : Ad Tech industry About the Role We are looking for a Backend Developer to join our Integration & Backend team. You will build robust, scalable microservices that power our platform, using Node.js, Nest.js, and TypeScript. Responsibilities Develop and maintain backend microservices using Node.js and Nest.js. Ensure scalability, performance, and reliability across backend systems. Collaborate with frontend teams and product owners to deliver features. Contribute to code reviews, testing, and continuous integration. Support the design and improvement of backend architecture. Key Requirements Strong experience with Node.js, Nest.js, and TypeScript . Proven track record in building scalable backend microservices. Familiarity with serverless frameworks such as AWS Lambda . Experience working in agile teams. Previous experience with SaaS, e-commerce, or Adtech is meritorious.

🏢 Summary: Senior Backend Developer role focused on developing and optimizing a key internal system using NestJS, Node.js, and TypeScript. The position involves full software development lifecycle ownership and automation of CI/CD processes. Strong emphasis on testing, database management, and deployment automation. 🗂️ Requirements: 7+ years commercial backend development experience, 5+ years experience with NestJS, Node.js, TypeScript, Experience in full software development lifecycle, Experience with CI/CD and GitHub Actions, Proficiency with PostgreSQL, Experience with TypeORM, Docker, Jest, Ability to write integration and E2E tests, Knowledge of coding best practices 📃 Skills: NestJS, Node.js, TypeScript, CI/CD, GitHub, PostgreSQL, TypeORM, Docker, Jest, RabbitMQ, Sentry, Zod, class-validator, Testcontainers, OpenAPI, Swagger 🏢 Description: Szukamy Backend Developera , który pomoże nam rozwijać i optymalizować kluczowy system wewnętrzny firmy. Jeśli masz silne doświadczenie w NestJS, Node.js i TypeScript , a do tego dobrze odnajdujesz się w środowisku CI/CD i automatyzacji wdrożeń, to jesteś osobą, której szukamy! ✅ Wymagania 🔹 Senior 7+ lat doświadczenia w komercyjnym tworzeniu aplikacji backendowych 🔹 Senior 5+ lat pracy z NestJS, TypeScript i Node.js 🔹 Doświadczenie w pełnym cyklu wytwarzania oprogramowania – od planowania po stabilizację po wdrożeniu 🔹 Doświadczenie w automatyzacji procesów wdrożeniowych (Github Actions, CI/CD) 🔹 Biegłość w pracy z bazami danych PostgreSQL 🔹 Znajomość TypeORM, Docker i Jest 🔹 Umiejętność pisania testów integracyjnych oraz testów E2E 🔹 Znajomość dobrych praktyk kodowania i umiejętność pracy zespołowej 🌟 Mile widziane 🔸 Doświadczenie z RabbitMQ lub innymi systemami kolejkowania wiadomości 🔸 Znajomość narzędzi monitoringu i error tracking (np. Sentry) 🔸 Doświadczenie z walidacją danych (Zod, class-validator) 🔸 Znajomość Testcontainers lub podobnych narzędzi do testów integracyjnych 🔸 Doświadczenie z OpenAPI/Swagger