Middle/Middle strong NodeJS Developer

At Geniusee, we help businesses thrive through technology partnerships and strengthen the engineering community by sharing knowledge and creating opportunities 
We live by our values: Continuous Growth, Team Synergy, Taking Responsibility, Conscious Openness, and Result-Driven Mindset. Here, you’ll find a safe, inclusive, and supportive environment where your voice is heard, and feedback is welcome
Whether you want to work from home or from our offices in Kyiv / Lviv / Warsaw with stable electricity and Wi-Fi, we’ve got you covered.
Join us and make an impact .

About the project:
Edtech.

Requirements

• 4+ years of experience in software development;
• 3+ years of experience in building and maintaining backend applications in Node.js/TypeScript;
• Hands-on experience with NestJS (or similar), React (primary), Next.js (SSR/SSG);
• Strong understanding of REST and GraphQL APIs;
• Experience with PostgreSQL, Redis, and TypeORM;
• Experience with Stripe;
• Familiarity with Docker, Kubernetes, and AWS (CDK, ECS, S3, CloudFront);
• Experience in microservices architecture and distributed systems;
• Solid knowledge of SOLID principles, design patterns, and clean code practices;
• Experience writing unit and integration tests (Jest or similar);
• Understanding of authentication, CORS, and secure data flows;
• Experience working with Agile teams (JIRA or similar);
• 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;
• English: Upper-Intermediate or higher.

Responsibilities

• Design, develop, and maintain scalable and high-performance backend services using Node.js (TypeScript, NestJS, or Express);
• Build and maintain secure RESTful and GraphQL APIs, ensuring reliable integration with frontend applications (React or similar);
• Design and implement serverless and cloud-native architectures using AWS;
• Work with relational and NoSQL databases (PostgreSQL, MySQL, MongoDB, Redis), ensuring optimized queries, caching, and data consistency;
• Implement authentication and authorization mechanisms (JWT, OAuth 2.0, Passport.js) and apply best practices in security and data protection;
• Analyze and improve system performance, identify bottlenecks, and apply optimized and scalable solutions;
• Collaborate closely with frontend, QA, DevOps, and PM teams to ensure end-to-end delivery and seamless deployment;
• Participate in code reviews, sprint planning, and CI/CD pipeline improvements;
• Contribute to technical assessments, estimations, and discovery or pre-sales phases, preparing PoCs when needed;
• Provide technical guidance and mentorship to junior developers and support knowledge sharing within the team;
• Ensure high code quality, maintainability, and adherence to industry standards and best practices.

Nice to have:

• Understanding of data-driven architectures and analytics integrations;
• Exposure to Machine Learning, data engineering, or AI-driven personalization;
• Familiarity with React/Next.js (for occasional cross-functional collaboration);
• Experience with Serverless components and event-driven architectures.

What will you get:
Career growth & projects
● Competitive salary based on your skills and experience, and a benefits package.
● Regular performance appraisals to support your career development.
● Professional development support: online courses, certifications, and study compensation (including English courses).
● A modern tech stack across challenging, long-term projects.

Health & well-being
● Paid vacation (18 working days) and sick leave (15 days).
● VIP medical insurance or sports coverage.

Work environment & flexibility
● Remote work from anywhere in the world or in one of our offices in Kyiv, Lviv, or Warsaw.
● Coworking compensation.
● Necessary equipment to perform your work.

Culture & community
● A collaborative and open culture where contributions are recognized.
● Regular corporate online & offline activities.
● Geniusee Charity Fund, making a difference beyond tech.