Senior .NET Software Engineer in London

As a Senior .NET Software Engineer, you will be a part of the team responsible for designing and building new features, resolving issues, taking care of continuous integration and deployment, and improving all aspects of delivery. You will contribute to creating and delivering innovative OTT streaming solutions, websites, apps, and live broadcast systems that can handle millions of concurrent users seamlessly.

Responsibilities

• Architect and implement robust, scalable, and high-performance solutions for OTT streaming platforms, apps, websites, and live broadcast systems capable of handling millions of concurrent users.
• Lead technical discussions and collaborate with cross‑functional teams to design and implement new features for our platforms, following SCRUM/Agile methodologies and sprint‑driven development.
• Maintain and enhance existing codebases, ensuring scalability and performance while leveraging GitHub for version control and collaboration.
• Troubleshoot and resolve technical issues with creative solutions.
• Take ownership of key development tasks within a continuous integration and deployment environment.
• Work with cloud infrastructure using a mix of services, containers, and virtual machines.
• Conduct thorough code reviews and contribute to improving engineering practices.
• Stay updated with the latest .NET technologies and integrate them into our systems when applicable, ensuring alignment with Agile best practices.
• Mentor and guide junior engineers, fostering a culture of continuous learning and technical excellence.
• Assist in the recruitment and onboarding of new front‑end team members.

Requirements

• Over 5 years of relevant work experience as a .NET Back‑End Engineer or similar.
• Proficient in .NET 8/.NET Framework.
• Strong understanding of building REST APIs with Web API.
• Hands‑on experience with multithreading and parallelization.
• Familiarity with NoSQL databases (preferably MongoDB).
• Knowledge of SQL and relational databases (preferably MS SQL).
• Experience with designing high‑performance and scalable services.
• Exposure to microservices and event‑driven architecture.
• Understanding of cloud technologies (AWS preferred).
• Experience with Docker and container orchestration (ECS/EKS a plus).
• Ability to write and maintain unit, integration, and component tests.
• Good understanding of HTTP, caching mechanisms, and service discovery.
• Familiarity with modern communication technologies like RabbitMQ (preferred), gRPC and Apache Kafka.
• Problem‑solving mindset for tackling complex technical challenges.
• Knowledge of in‑memory key‑value databases like Redis.
• Proficiency in Git and scripting with PowerShell/Bash.
• Experience with continuous integration tools (e.g., GitHub Actions & Workflows).
• Familiarity with continuous deployment processes (e.g., Flux).
• Familiarity with Windows/Visual Studio.

We are looking for someone who is:

• Driven to push the boundaries and lead change and performance.
• Communicative to leave no‑one in the dark and to work with your team successfully.
• Reliable so we know that we can call on you to meet deadlines.
• Passionate about the latest technologies and standards.
• Proactive to suggest improvements, identify and fix potential issues.
• Solid technically speaking, to advise both Clients and internal teams.

Our people are key to our success and we pride ourselves on offering a dynamic, creative, innovative and supportive environment. Having the right combination of a 'can‑do' approach, strong work ethic, integrity, friendliness and attention to detail is crucial.

Deltatre consciously nurtures an environment where each and every team member feels safe to bring their whole selves to work, in which everyone is valued and respected for who they are and what they bring. Everyone has the opportunity to reach their full potential, and every team member is expected to treat everyone with dignity and respect, value different perspectives, use inclusive language and work in alignment with Deltatre's commitment to diversity and inclusion. At Deltatre, everyone is welcome and celebrated.

We are committed to ensuring that we provide equal opportunities for all. Please let us know if you need us to make any adjustments or if you have any special requirements for the interview process.