Software Engineer (Fullstack)

About the Position

We are seeking a Senior Fullstack Software Engineer with 5+ years of experience in backend development using.NET and experience with cloud platforms, CI/CD, and microservices.

Responsibilities

• Design, develop, and maintain scalable, high-performance web projects from scratch using.NET and React/Angular.
• Build backend services, APIs, and frontend applications from the ground up, ensuring maintainability and long-term scalability.
• Optimize application performance, reliability, security, and overall user experience.
• Collaborate closely with product managers, designers, and engineering teams to deliver high-quality solutions.
• Write clean, well-structured, maintainable, and thoroughly documented code while adhering to established coding standards and best practices.
• Design, implement, and manage database solutions using PostgreSQL, including schema design and query optimization.
• Integrate and maintain third-party APIs, external services, and internal platform components.
• Participate in architecture discussions, technical design reviews, and continuous improvement initiatives.
• Implement automated testing and contribute to CI/CD processes to ensure reliable and efficient software delivery.
• Monitor, troubleshoot, and resolve production issues while maintaining system stability and performance.

Requirements

• 5+ years of professional experience in backend development with.NET.
• Strong proficiency in.NET, ASP.NET Core (MVC/Web API), and C#.
• Extensive experience with relational databases (MS SQL Server or PostgreSQL) and ORM frameworks.
• Hands-on experience designing, optimizing, and maintaining database schemas and queries.
• Experience working with at least one major cloud platform: AWS, Azure, or GCP.
• Practical experience with CI/CD pipelines, Docker, and Kubernetes.
• Experience with messaging and event-driven systems such as NATS, Kafka, or RabbitMQ.
• Familiarity with observability and monitoring practices for high-traffic applications, including tools such as the LGTM stack, Datadog, or similar platforms.
• Proven track record of building and maintaining high-scale distributed systems.
• Solid experience with unit testing.
• Strong understanding of application security best practices and performance optimization techniques.
• Good knowledge of microservices and service-oriented architecture (SOA) principles.
• Practical implementation of scalable software architecture, design patterns.
• Knowledge of web security standards (OWASP), authentication and authorization protocols (OAuth 2.0, OpenID Connect, JWT), and 12-Factor App principles.
• Experience leveraging AI-assisted development tools such as Codex, Cursor, or similar coding assistants.

Nice to Have

• Frontend development experience using Angular/React and TypeScript.
• Understanding of RxJS, reactive programming patterns, and state management solutions.
• Expertise in HTML5, CSS/SCSS, responsive design, and component-based architecture.
• Integration and testing automation experience.

Soft Skills

• Excellent problem-solving and analytical skills.
• Strong communication and collaboration skills with the ability to work effectively in cross-functional teams.
• Ability to thrive in a fast-paced, agile development environment.

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 is guaranteed.
• Beautiful offices in Warsaw, Limassol, Kyiv, Almaty, 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 a 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.
• Corporate events, team buildings.

About the Company

Join our dynamic team and contribute to innovative projects in a supportive and collaborative environment.