Full Stack Developer

At Apptension, we craft innovative digital products for startups, brands, and agencies worldwide. With a high-performing team of 30+ experts in development and product management, we turn bold ideas into lasting digital experiences. Over the past decade, we've collaborated with companies like Netflix, Spotify, Uber, and Universal - delivering solutions that combine creativity with technical precision. Driven by a culture of partnership, transparency and continuous innovation, we don’t just build products - we build what’s next.

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  Designing, building, and maintaining high-performance, user-friendly web applications

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  Writing clean, scalable, and testable code, and promoting best practices through code reviews and team standards

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  Evaluating and implementing new tools and technologies to boost performance and development efficiency

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  Planning and implementing new features in close collaboration with the client and Project Manager

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  Collaborating with cross-functional teams to ensure seamless integration and scalability

• At least 5 years of commercial experience in software development

• Proficiency in Python/Node.js and React

• Experience working in cloud environments, preferably AWS

• Comfortable working with Django or FastAPI; Next.js or Remix; TypeScript; React, and its ecosystem

• Familiarity with DevOps practices and tools, including Git, CI/CD, monitoring, IaaC, Docker

• Strong communication and collaboration skills - you’ll have to be able to talk to clients directly 

• Solid understanding of the end-to-end development cycle, including backend, frontend, and infrastructure

• Familiarity with SQL and NoSQL databases

• Analytical mindset and strong problem-solving skills

• Self-driven and curious by nature – you're proactive, eager to learn, and genuinely passionate about technology

• Good command of English (min. B2), both spoken and written 

• Knowledge of LangChain is a big plus

• Experience in GCP/Azure/Vercel/Digital Ocean

• Some knowledge of ReactNative

• B2B contract: 20000 - 26000 PLN net + VAT

• Contract of employment: 17400 - 21580 PLN gross

• HR call (30 mins)

• Technical interview (1h)

• Pair programming (1,5h)

• Final decision/feedback (within 3 business days)

👉 If you want to know a bit more about how we work, take a look at our portfolio and blog 📖

Excited to build great things with a team that values creativity, growth, and real impact? Let’s talk!