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Senior .Net Developer for Navigation Widgets

Gr8tech

Anywhere (Warsaw) Remote permanent

Posted: February 2, 2026

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Job Description

GR8 Tech builds B2B iGaming platforms for operators who play to lead.

We deliver full-cycle, high-impact tech designed to scale — from seamless integrations and expert consulting to long-term operational support. Our platform powers millions of active players and drives real business growth. Call it what it is: the iGaming Platform for Champions.

With 1000+ GR8 people across locations and time zones, we don’t just ship technology — we help operators build success stories across brands, markets, and geos.

Our ambition drives us. Our people make it real.

If you’re a challenger in spirit and a champion in action — join us.

Why this role exists:

This role exists to develop and maintain CRM solutions for the Navigation Widgets team, delivering high-quality features, ensuring system stability, and collaborating across cross-functional teams.

What you’ll drive:

Feature development and implementation

• Developing and implementing new features based on project requirements and specifications.

• Writing, testing, and debugging code for software applications to ensure functionality and efficiency.

Code quality and best practices

• Participating in code reviews and providing constructive feedback.

• Ensuring adherence to software design principles and best practices.

Collaboration and problem-solving

• Working closely with cross-functional teams.

• Troubleshooting and resolving software issues and bugs in a timely manner.

What makes you a GR8 fit:

Must-have

• 5+ years of proven experience as a .NET Core developer with strong C# skills.

• Solid understanding of web application development, including RESTful APIs and HTTP principles.

• Experience with unit and integration testing.

• PostgreSQL knowledge.

• Kafka experience.

• Expertise in software design principles: OOP, SOLID, Patterns, DDD.

• Git proficiency.

• Intermediate+ English.

Nice-to-have


Bachelor’s degree in Computer Science, Software Engineering, or related field (or equivalent experience).

Why you’ll love working here:

Benefits Cafeteria — annual budget you allocate to:

Sports • Medical • Mental health • Home office • Languages.

Work-life & support

• Paid maternity/paternity leave + monthly childcare allowance.

• 20+ vacation days, unlimited sick leave, emergency time off.

• Remote-first + tech support + coworking compensation.

• Team events (online/offline/offsite).

• Learning culture with internal courses + growth programs.

Our culture & core values:

GR8 Tech culture is how we win — through trust, ownership, and a growth mindset. We move fast, stay curious, and keep it real, with open feedback, room to experiment, and a team that’s got your back.

FUELLED BY TRUST: we’re open, honest, and have each other’s backs.

OWN YOUR GAME: we take initiative and own what we do.

ACCELER8: we move fast, focus smart, and keep it simple.

CHALLENGE ACCEPTED: we grow through challenges and stay curious.

BULLETPROOF: we’re resilient, ready, and always have a plan.

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