As a senior .net developer, you will play a key hands-on role in the design and delivery of high-quality software solutions for electronic trading and pricing workflows. You will be expected to bring strong technical capability, deep practical experience of modern .
NET development, and the ability to work confidently on complex platform components. This is an exciting opportunity to contribute to a new greenfield solution within fixed income electronic trading, built on AWS and modern .
NET technologies, with a strong focus on engineering quality, reliability and production-grade delivery. Responsibilities
* Design, build and maintain high-quality .
NET software components across the full software delivery lifecycle.
* Take hands-on ownership of technically complex platform components, ensuring they are robust, maintainable, scalable and well documented.
* Apply strong engineering judgement to architecture, design, implementation, testing and operational considerations.
* Work closely with trading, product, architecture, infrastructure and partner technology teams to deliver solutions aligned to business priorities.
* Contribute to strong engineering practices including automated testing, observability, secure coding, CI/CD and effective release management. Required Skills
* Expert-level C# and .
NET/.
NET Core experience, with a strong understanding of object-oriented design, SOLID principles and clean architecture.
* Strong experience designing, building and supporting ASP.
NET Core Web APIs and RESTful services in production environments.
* Advanced understanding of multi-threading, asynchronous programming, performance tuning and distributed system design.
* Proven experience with SQL and NoSQL databases, including data modelling, performance considerations and operational support.




* Hands-on experience with containerisation technologies such as Docker and modern deployment patterns.
* Strong experience designing and delivering API-based service-oriented or microservice architectures.
* Strong discipline around automated testing, including unit, integration and behaviour-driven testing using tools such as NUnit, Moq and Cucumber.
* Extensive experience with messaging and event-driven architectures using technologies such as RabbitMQ, TIBCO, SignalR or equivalent platforms.
* Strong experience with continuous integration, continuous delivery and source control tooling such as Git, TeamCity or equivalent platforms.
* Practical experience working in Agile delivery teams and contributing to software lifecycle improvements.
* Experience supporting production systems, diagnosing incidents and improving reliability, monitoring and operational readiness. Preferred Skills
* Fixed Income product knowledge, ideally including electronic trading, pricing, RFQ workflows or market connectivity.
* Experience configuring and improving continuous integration and continuous delivery pipelines.
* Hands-on experience designing or operating solutions on AWS.
* Experience with cloud-native observability, infrastructure as code or automated deployment tooling. Required Skills
* Highly capable hands-on engineer with strong depth across .
NET development, system design and production software delivery.
* Pragmatic, outcome-focused and comfortable balancing delivery pace with long-term engineering quality.
* Adaptable to a diverse set of technical and business responsibilities.
* Excellent analytical and problem-solving skills, particularly in complex distributed systems.
* Able to work independently on complex technical problems and deliver high-quality solutions with minimal supervision.
* Strong written and verbal communication skills, with the ability to explain technical concepts clearly to business and technology stakeholders.

📌 Senior Developer (Comunidad de Madrid)
🏢 Templeton & Partners - Innovative & Inclusive Hiring Solutions
📍 Comunidad de Madrid