Middle Strong/Senior Node.js Developer

Our mission at Geniusee is to help businesses thrive through tech partnership and strengthen the engineering community by sharing knowledge and creating opportunities Our values are Continuous Growth, Team Synergy, Taking Responsibility, Conscious Openness and Result Driven. We offer a safe, inclusive and productive environment for all team members, and we’re always open to feedback If you want to work from home or work in the city center of Kyiv, great — apply right now. E-commerce domain (Sweden). We’re building an internal management platform that covers multiple aspects of online sales for a wide range of products. The system includes numerous integrations and data flows — fetching data from external sources and pushing updates to other systems.The engineer will work directly with the client, clarify requirements, demo progress, and deliver end-to-end backend functionality (admin panel on the front-end side — basic skills are enough). Requirements 4+ years of commercial experience in backend development (Node.js); Hands‑on experience withNode.js frameworks (NestJS is a plus / preferred); Solid understanding ofREST APIs (and/or GraphQL), API versioning, and integration patterns; Strong experience with databases:PostgreSQL (plus understanding of indexes, transactions, performance); Understanding ofsoftware architecture , design patterns, and ability to design solutions from scratch; Good knowledge oftesting practices (unit/integration), debugging, and quality ownership; Ability to workindependently : clarify requirements, estimate tasks, manage time, and validate results; Strong communication skills and readiness forregular client communication (weekly sync + async via Slack/email); English:Upper-Intermediate or higher. Would be a plus Experience starting a projectfrom scratch (architecture, boilerplate, tooling); Basic DevOps skills: CI/CD basics, deployments, environment configuration; Experience withAWS (any relevant services); Docker and basic containerization knowledge; Experience withmicroservices or modular monolith approach; Experience withmessage queues (SQS/RabbitMQ/Kafka) and background jobs; Experience withintegration-heavy platforms (e-commerce, ERP, PIM, OMS, shipping, marketplaces). What you will do Design and develop backend services usingNode.js/TypeScript , focusing on scalability and maintainability; Build and maintainintegrations (pull/push data, handle third-party APIs, webhooks, retries, idempotency where needed); Collaborate directly with the client to clarify requirements, align expectations, and demonstrate progress; Own the delivery cycle: estimates, implementation, testing, and release readiness; Ensure robust error handling, logging, and monitoring-ready code; Support basic admin‑panel needs (basic FE involvement when required — no complex UI work). What you will get Competitive salary and good compensation package; Exciting, challenging and stable startup projects with a modern stack; Ability to practice English and communication skills through permanent interaction with clients from all over the world; Professional study compensation, online courses and certifications; Career development opportunity, semi‑annual and annual salary review process; Necessary equipment to perform work tasks; VIP medical insurance or sports coverage; Informal and friendly atmosphere; The ability to focus on your work: a lack of bureaucracy and micromanagement; Flexible working hours (start your day between 8:00 and 11:30); Paid vacation (18 working days) and sick leaves; Cozy offices in 2 cities ( Kyiv & Lviv ) with electricity and Wi‑Fi (Generator & Starlink); Compensation for coworking (except for employees from Kyiv and Lviv); Unlimited work from home from anywhere in the world (remote); Geniusee has its own charity fund. Please be informed that the data administrator is Geniusee LLC with headquarter at BC Y4, Yaroslavsky Lane 4, 04071, Kyiv, Ukraine. Processing of personal data is carried out in accordance with the Law of Ukraine "On Protection of Personal Data" dated No. 2297‑VI. You have the right to request access to your personal data, their release, removal or restriction of admission, the right to make a warning against admission, as well as the right to