Software Engineer

TechTree; Warszawa; Hybrid; PLN 210,000 - 260,000; Full time

Job summary

TechTree in Warsaw is seeking a software engineer to build full-stack products across various industries. You will work with software engineers, AI engineers, data scientists and product specialists to turn digital and AI ideas into market-ready solutions. The role is hybrid in Warsaw with frequent business travel.

You will design, implement and ship software from ground up and mentor peers on testing, design, and Agile delivery while collaborating with stakeholders to steer technical direction.

Qualifications

• Undergraduate or master's degree, or equivalent experience.
• 2+ years developing full-stack applications, writing readable, testable, scalable code.
• Experience collaborating with developers and non-technical stakeholders in software teams.
• Hands-on experience across frontend (TypeScript, React, Angular, Vue, Next.js) and backend (Python, Node.js, Java/Spring, C#/.NET), plus SQL/NoSQL databases.
• Experience in Agile teams, including sprint ceremonies and pair programming.
• Business-level fluency in English and Polish, both written and spoken.
• Willingness to travel frequently for client work.

Responsibilities

• Build full-stack software products from design through production.
• Mentor teammates on automated testing, user-centric design, and Agile delivery.
• Collaborate with stakeholders to shape technical direction and problem-solving sessions.
• Sustain engineering practices to ensure projects remain maintainable after delivery.

Skills

Full-stack development

Backend technologies (Python, Node.js,

Frontend frameworks (TypeScript, React

Agile methodologies

Languages: English & Polish

Travel willingness

Education

Bachelor's/Master's in CS or related

Tools

Docker

CI/CD

Cloud platforms (Azure/AWS/GCP)

LLM frameworks / prompt orchestration

Job description

Join a multidisciplinary product and engineering team that builds software for organisations across many industries. You'll work alongside software engineers, AI engineers, data scientists and product specialists to turn digital and AI ideas into working products. This role is based in Warsaw, hybrid, and involves frequent business travel.

The role

You'll be a software engineer on product teams. You'll build products from the ground up, work hands-on with stakeholders, and help shape how teams engineer software. Each project spans a different industry and technology, so you'll keep learning as you go.

What you'll do

Build: develop full-stack software products from design through production.

Mentor: share good practice in automated testing, user-centric design and Agile delivery with the engineers you work with.

Collaborate: take part in problem-solving sessions with stakeholders and help shape technical direction.

Sustain: help teams build engineering practices that keep working after a project ends.

What you bring

Must-haves

Undergraduate or master's degree, or equivalent experience

2+ years developing full-stack applications, writing code that is readable, testable, maintainable and scalable

Experience collaborating with developers as well as technical and non-technical people within software teams

Hands-on experience across frontend (TypeScript, React, Angular, Vue, Next.js) and backend (Python, Node.js, Java/Spring, C#/.NET), plus SQL or NoSQL databases

Experience working in Agile teams, including sprint ceremonies and pair programming

Strong time management in a complex, largely autonomous environment

Business-level fluency in English and Polish, both written and spoken

Willingness to travel frequently for client work

Nice to have

Experience with LLM frameworks, prompt orchestration, agent frameworks or evaluation frameworks

Experience with cloud platforms (Azure, AWS, GCP), Docker and CI/CD

A strong focus on automated testing, logging, monitoring and system reliability

What we offer

A learning culture with structured development programmes, coaching and clear, actionable feedback

Real ownership from day one: your ideas and contributions will shape what gets built

An international, multicultural team

A competitive salary based on your location, experience and skills, plus a comprehensive benefits package for you and your family