Startup House

Back-end Freelancer

Startup House  •  Republic of Poland (Onsite)  •  3 months ago
Apply
AI can make mistakes so check important info. Chat history is never stored.

Job Description

We are all about supercharging tech-based businesses. But make no mistake – software development is just a part of what we do at Startup House. Our mission is to deliver all-around support for startups and growing companies at all stages of development.

We connect talented freelancers with cutting-edge projects, offering a platform for you to showcase your expertise and thrive in a collaborative environment.

If you are a skilled freelancer looking for new opportunities to collaborate with innovative companies, join Startup House's Freelance Hub to find a matching project for your skillset.

How can you grow with us?

  • You will work on various projects for clients of different backgrounds, both business- and consumer-targeted.
  • Do you wonder what project you would join? Check out our previous projects: a powerful cyber risk mitigation platform, a Norwegian eco-friendly start-up or something just as exciting!
  • You’ll gain wide experience in a multitude of industries and in various methods of work, both for exciting startups and established enterprises like Siemens
  • You will own your work and decide on the project’s direction.

What we’re looking for

Experience:

  • 2+ years of experience or proven track record of using Node.js in commercial projects.

Tech skills:

  • Strong interest in DDD & clean architecture,
  • Very good knowledge of Node.js and Nest.js,
  • High code quality.

Soft skills:

  • At least B2 in English - we work internationally, so that’s a must,
  • Proactivity and high level of organization of your own work, with strong skills in time management and planning,
  • Strong collaboration, communication, and organisation skills
  • Proactive attitude towards implementing changes,
  • Attention to detail.

Nice-to-haves:

  • Passion for new technologies and startups!
  • Some experience with Java
  • Any other programming languages and frameworks.

P.S Please note that this is a part-time gig, if you're interested in full-time positions, please visit our Career Page

Startup House

About Startup House

Startup House l AI Software House | Full-Cycle Software Partner for Startups & Enterprises

We help ambitious companies transform ideas into scalable digital products.

From startups to global enterprises, we combine startup agility with enterprise stability to deliver software that drives measurable business impact.

🚀 What we do:

Custom Software Development – from MVPs to complex enterprise platforms

AI & Data Solutions – automation, RAG architectures, AI-driven SaaS

Digital Transformation – building future-proof solutions in fintech, self-storage, travel, manufacturing and beyond

Product Discovery & Design – workshops, UX/UI, validation, and fast prototyping

💡 Why us?

60+ engineers, designers, and product experts

Global experience – delivering projects across Europe, the US, and MENA

Proven track record – trusted by brands like Siemens, Rainbow, CHOOOSE, and others

End-to-end partnership – from discovery to scaling and long-term maintenance

🌍 With headquarters in Warsaw, Poland, we work as your strategic product partner, helping you build, launch, and scale digital solutions that matter.

Industry
IT & Software
Company Size
11-50 employees
Headquarters
Warsaw, PL
Year Founded
2016
Social Media