Software Engineer (Fullstack)

About the Position

RedCore is building a new HR product from scratch! We are looking for a senior engineer who enjoys working closely with Product, takes ownership of architecture decisions, and can build scalable systems from the ground up. This is a hands-on role with real impact on product direction and technical foundations.

Responsibilities

• Design, develop, and maintain a scalable product using .NET and React
• Build clean, maintainable, and well-documented code
• Optimise application performance, reliability, and security
• Design and maintain database structures in PostgreSQL
• Integrate third-party APIs and AI services
• Collaborate closely with Product, Design, and Engineering teams
• Participate in Agile processes and continuous improvement

Requirements

• 5+ years of professional experience in fullstack development using the latest.NET Core and React (TypeScript)
• Strong proficiency in ASP.NET Core and modern C#
• Strong experience with relational databases (preferably PostgreSQL and ORM tools (EF Core)
• Hands-on experience designing and optimising database schemas and queries
• Experience with Docker and GCP/AWS-based deployments
• Experience building products from scratch in dynamic environments
• Solid understanding of REST API design principles
• Practical knowledge of unit and integration testing
• Strong understanding of security best practices and performance optimisation
• Experience designing scalable backend architectures
• Understanding of monitoring and observability best practices

Nice to Have

• Production-based experience to work with AI agents and modern AI tools (Cursor, Copilot, Codex, etc.)
• Experience integrating AI services (e.g. OpenAI, Azure OpenAI, Anthropic)
• Experience with Jira integration

Soft Skills

• Are product-minded and customer-focused
• Strong problem-solving skills and collaborative mindset
• Understand that successful products are built around user value
• Enjoy collaborating with Product and proposing your own ideas
• Balance Engineering and Product goals
• Are proactive and comfortable solving complex challenges
• Be ready to be a core player in the team

We Offer

• An exciting and challenging job in a fast-growing business groups, the opportunity to be part of a multicultural team of top professionals in Development, Architecture, Management, Operations, Marketing, Legal, Finance and more.
• Great working atmosphere with passionate experts and leaders, sharing a friendly culture and a success-driven mindset is guaranteed.
• Beautiful offices in Warsaw, Limassol, Yerevan work remotely or on-site with comfort and enjoy the opportunity to build a network of connections with professionals day by day.
• Modern corporate equipment based on macOS or Windows and additional equipment are provided.
• Paid vacations, sick leave, personal events days, days off.
• Corporate health insurance program for your well-being.
• Referral program enjoy cooperation with your colleagues and get the bonus.
• Educational programs: regular internal training sessions, compensation for external education, attendance of specialized global conferences.
• Rewards program for mentoring and coaching colleagues.
• Free internal English courses.
• In-house Travel Service.
• Multiple internal activities: online platform for employees with quests, gamification, presents and news, RedCore clubs for movie / book / pets lovers, special office days dedicated to holidays.
• Company events, team buildings.

About the Company

RedCore is a fast-growing company with a diverse team of professionals across various departments. We are committed to providing a great working atmosphere and opportunities for professional growth.