Senior Backend Developer (Node.js)

• Required skills: 4+ years of commercial experience in Node.js, SQL and NoSQL DBs, knowledge of backend frameworks (e.g Express.js, NestJS), experience in TypeScript, SOLID and KISS, knowledge about: design and architecture patterns, basic usage AWS services, basic dev-ops skills (Docker, GitHub Actions)
• Offer: B2B, paid days off, 100% remote (or hybrid/onsite - as you prefer), Polish time zone, flexible hours, full-time position, long-term contract, Scrum Teams
• Perks and Benefits: Budgets for self-development, integrations, healthcare & sport activities, Mentoring Program, Individual Career Path, Paid Time Off, Paid Health Break & more
• Tools you'll use: Apple MacBook Pro, Slack, GSuite, GitHub, Jira, Coda, Miro

Your future tasks and duties:

• Writing readable, scalable and easy-to-maintain JS/TS code with OOP flavor
• Writing clear documentation for delivered code and technical decisions
• Being responsible for designing and modifying DB structures, including assessing long-term impact and trade-offs
• Clearly communicating feasible technical solutions and proposing alternative approaches when needed
• Supporting architecture decisions and the long-term technical direction of the project
• Proactively identifying technical and product risks, scope changes and possible blockers
• Maintaining continuous contact with the client and fostering a good relationship
• Providing the client with possible options and solutions, along with necessary context in difficult or unclear situations
• Being a natural leader in Backend - staying on top of trends/news, sharing them, teaching others and aiming for best quality solutions
• Providing thoughtful peer code review and raising engineering standards across the team

About you - Tech skills & Experience:

• 4+ years of commercial experience in Node.js
• Have deep knowledge of at least one Node.js backend framework (e.g. Express.js, NestJS, Fastify, etc.) - know APIs/functions/features and have used them in advanced, production-grade solutions
• Proficient in designing, developing and maintaining high-performance, scalable and secure REST APIs, as well as familiar with GraphQL
• Have usage experience with Docker - know how to prepare, debug and connect local environments
• Worked within AWS stack - used S3, Cognito, SNS, SQS and other cloud services in production or production-like systems
• Worked with SQL/NoSQL databases, both integration and design-wise, using ORM or query builder tools (e.g. Prisma, Knex)
• Experienced with TypeScript
• Experienced in designing and building AI-powered applications or features using existing AI/LLM tools, APIs, embeddings, vector search or prompt/context optimization
• Use AI tools in daily engineering work to improve delivery, research, debugging, code quality and technical decision-making while understanding their limitations and risks
• Able to connect technical decisions with product and business goals, proactively identify risks and propose scalable, maintainable solutions

About you - Soft Skills:

• English level B2/C1 - to cooperate with American clients
• Polish level C1 - to communicate easily within the team
• Open-minded to new challenges (different frameworks, etc)
• Understand the significance of MVP and prioritize the pursuit of excellence and high-quality outcomes, even amid tight project timelines.
• Understand the significance of MVP and aim to deliver top-notch results, even amid tight project timelines
• Communicate with the team to efficiently translate business complexities (user stories/tasks) into solutions (results/estimations)
• Build and nurture strong client relationships.
• Share your expertise with other team members.
• Ability to adapt to various situations and requirements

Nice to have:

• Knowledge of Scrum and Agile methodologies, open-source contributions, Serverless experience, experience in various BE frameworks
• Worked in the very beginning of the product development/creation stage
• Experience in designing application architecture and documenting it with Architectural Decision Record (ADR)