
Software Engineer (Fullstack)
Primary stack
Nice to have's
Job description
About the Position
RedCore is building a new HR product from scratch! We are looking for a Senior Software Engineer (Fullstack) 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
- Optimize 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 optimizing 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 optimization
- Experience designing scalable backend architectures
- Understanding of monitoring and observability best practices
- 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
Nice to Have
- Experience with Material UI
- Experience with modern state management
- Experience with Vite
We Offer
- An exciting and challenging job in a fast-growing business group
- 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
- 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 to 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 dynamic and innovative company dedicated to building cutting-edge HR solutions. Our team is composed of passionate professionals who are committed to delivering high-quality products and services. We value collaboration, creativity, and continuous improvement, fostering a supportive and inclusive work environment.
© PIN-UP Global. This job description was sourced from the employer's public career page. TheJob is not the employer — we index the posting and route candidates to the source. All content rights and hiring decisions belong to the employer.
PIN-UP Global is an international holding specializing in the development and implementation of advanced technologies, B2B solutions and innovative products. We provide certification and licensing of our products, providing customers and partners of the holding with high-quality and reliable solutions. Our holding is represented in six countries (Cyprus, Poland, Kazakhstan, Armenia, Peru, Malta). The headquarters of the holding is located in Cyprus. The CEO and owner of PIN-UP Global is Marina Ilina. Our values reflect our way of living and interacting with employees, partners and customers:🔸Be the first to lead. We are constantly moving forward and setting trends. We offer the best solutions for clients and employees thanks to our drive, commitment, and courage to implement ideas and propose changes.🔸Be an expert in your domain. We offer a quality product due to the expertise of our team. Our professionalism is based on constant development along with the company, depth of understanding of the field in which we work, and competence in our functional area.🔸Be a partner in teamwork. Synergy is an important component of our built-on trust interaction. We learn from each other and keep agreements. We achieve a common result thanks to everyone's contribution, mutual support, and the ability to negotiate.🔸Be focused on the result. We are focused on personal, corporate, and client results. All company participants achieve our goals thanks to the high speed of work, perseverance, and determination. We are working to improve the qualitative and quantitative result indicators.🔸Be open and honest in communication. We are open in our communication with clients and employees. We give constructive feedback. Straightforwardness and honesty in communication are crucial for us. We create transparent and simple policies and processes.
More at PIN-UP Global
All 119 roles
Head of Technology
PIN-UP Global · Poland +2

Marketing Manager
PIN-UP Global · Poland +4

Project Manager (Tech)
PIN-UP Global · Poland +2

Project Manager (Tech)
PIN-UP Global · Poland +1
Similar jobs
Software Engineer (Fullstack)
Redcore Group · Warsaw +2
Software Engineer (Fullstack)
Redcore Group · Warsaw +2
Software Engineer (Fullstack)
Redcore Group · Warsaw +2
Software Engineer (Fullstack)
Redcore Group · Warsaw +2