Lead Backend Engineer & Architect (Node.js | TypeScript | AI)

Hello,
We are called People More because we treat our employees with respect, but also because the projects we work on are for people and should be easy and pleasant to use. We are technological, but we look at the bigger picture :)
The company is made up of people with a huge client base in the country and abroad, for whom we build projects from scratch (UX, UI, frontend, backend, mobile) or in part. We work directly for our clients and also support our partners in their own solutions. This ensures a wide range of projects and the ability to change! We work with clients all over the world.
For the project that we are working on with our partner, we are looking for Lead Backend Engineer & Architect (Node.js | TypeScript | AI).

Your duties will include:

• Design and build scalable backend services using Node.js, TypeScript, and NestJS.
• Drive architectural decisions and document them using Architecture Decision Records (ADRs).
• Design and implement distributed, event-driven systems.
• Optimize backend performance, reliability, and scalability.
• Design efficient PostgreSQL data models and optimize complex queries.
• Own backend security, authentication, authorization, and data isolation strategies.
• Collaborate on AI-powered features and backend integrations with LLMs.
• Mentor engineers and establish engineering best practices.
• Contribute to technical strategy while remaining actively involved in software development.

Requirements that must be met:

• 7+ years of commercial backend development experience.
• Expert knowledge of Node.js, TypeScript, and NestJS in production environments.
• Proven experience designing and operating high-scale distributed systems serving hundreds of thousands of users.
• Strong architectural background with demonstrated ownership of backend platforms and technical decisions.
• Expert knowledge of PostgreSQL, including:
  • query optimization,
  • execution plans,
  • indexing,
  • transactions,
  • using raw SQL when appropriate.
• Experience designing asynchronous and event-driven systems, including:
  • queues,
  • retries,
  • idempotency,
  • background job processing (e.g. BullMQ).
• Strong understanding of backend security, including:
  • OAuth 2.0,
  • RBAC/ABAC,
  • OWASP,
  • audit logging,
  • secrets management,
  • permission boundaries.
• Experience implementing multitenant architectures, data isolation, and Row-Level Security (RLS)-style patterns.
• Experience writing Architecture Decision Records (ADRs) and leading technical design decisions.
• Practical experience using AI-assisted or agentic coding workflows while maintaining high engineering quality standards.
• Very good English and Polish

What we offer:

• We are open and honest and we solve problems instead of generating them.
• Maybe it’s obvious, but we really respect our employees and associates. We used to be software developers, too, and we appreciate that job!
• A small team
• An international working environment and international projects
• Private medical care
• Sports card
• Training courses
• Work that is 100% remote (unless you prefer another system)

We have an office in Krakow, but if you like to work remotely, that’s absolutely fine. We are OK with fully remote work. For us, you can be located anywhere. :)

Why it’s a good idea to work with People More?

• If you are not satisfied with your work or your tasks, we’ll find a way out together!
• If you get bored, we will offer you a new product and new, fascinating tasks
• We will work on your brand together: you will get an opportunity to attend conferences, including as a speaker, and we will help you publish in recognized magazines and online
• We will facilitate your access to challenges that are usually difficult to get
• At any time, you can talk directly to the board of People More—we talk your language because the company’s founders are software developers and designers!

What does the recruitment process look like?

• A friendly remote initial interview
• A remote technical talk
• The decision to work together!

Salary

150 - 200 zł/h

contract

B2B

Location

Kraków / remote