Senior Backend Developer (Java /.NET)
Primary stack
Nice to have's
Job description
About the Position
Senior Backend Developer (Java /.NET)
Senior • On-site
140 - 170 PLN/month
Warsaw, Poland
Responsibilities
- Design, develop, and maintain backend services and RESTful APIs using Java or .NET
- Build scalable, reliable, and high-performance backend solutions for client-facing applications
- Design data models and integrate services with relational and NoSQL databases
- Collaborate with front-end developers to define API contracts and ensure seamless system integration
- Develop and deploy applications in containerized environments using Docker, Kubernetes, or OpenShift
- Apply secure coding standards and software engineering best practices
- Create and maintain unit and integration tests
- Integrate applications with CI/CD pipelines and automated deployment processes
- Monitor and optimize application performance, scalability, and reliability
- Troubleshoot technical and production issues and support their resolution
- Participate in technical design discussions, sprint planning, code reviews, and other Agile activities
Requirements
- 8+ years of professional backend software development experience
- Strong commercial experience with Java or .NET
- Hands-on experience with Spring Boot or .NET Core/modern.NET
- Strong experience designing and developing REST APIs
- Experience with Docker and container orchestration platforms such as Kubernetes or OpenShift
- Good knowledge of SQL and relational databases, including data modeling and query optimization
- Experience with automated testing, including unit and integration testing
- Familiarity with CI/CD pipelines and modern software delivery practices
- Strong understanding of object-oriented programming and software engineering principles
- Ability to work effectively in cross-functional Agile development teams
- Fluency in English (written and spoken)
Nice to Have
- Experience with event-driven or messaging architectures (e.g., Kafka or MQ)
- Experience with cloud-native application development
- Knowledge of NoSQL databases
- Experience within financial services, fund administration, or transfer agency environments
We Offer
- Private medical care
- Co-financing for the sports card
- Constant support of a dedicated consultant
- Employee referral program
About the Company
DCG is a leading company in the fintech sector, dedicated to delivering innovative solutions to our clients. We value collaboration, continuous learning, and professional growth.
© MindPal. 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.
Recruitment & HR Tech,AI & Automation,Fintech,E-learning,Healthcare,E-commerce
About the Company MindPal is a project initiated by Sky Gate Company, designed to address challenges in IT recruitment by connecting companies with candidates through a unique platform. The company focuses on delivering talent, technology, and traction to clients, having successfully partnered with over 250 businesses globally. MindPal specializes in AI-driven digital transformation, offering scalable solutions for startups and enterprises across various industries. Products, Services & Tech Stack Core Solutions AI Agents & Assistants: Intelligent AI agents that automate tasks, manage workflows, and provide real-time support. MVP Development: Transforming business ideas into working products for quick testing and validation. AI Consulting: Expert guidance on AI strategy and implementation. Chatbots: Custom conversational bots for user engagement and support. SaaS Solutions: Scalable cloud-based products tailored to business needs. AI Automation: Tools for optimizing workflows and increasing operational efficiency. Technologies & Frameworks Ruby on Rails React TypeScript Docker Heroku Django Angular Python VOIP Jenkins Project Scope & Target Clients Client Base Verticals: Fintech, e-learning, healthcare, e-commerce. Client Types: Startups and established Fortune 500 corporations. Engineering Scale Scope: Full-stack digital product consulting and partnership. Complexity: Projects range from MVP development to full-scale SaaS solutions.
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