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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer / Software Architect | C#/.NET | Global CommoditiesTrading | London - **Company:** SGI - **Location:** Greater London, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** .NET Framework, Application Programming Interfaces (APIs), Application Frameworks, Computing Platforms, Microsoft Azure, C Sharp (Programming Language), Software Design Patterns, Distributed Systems, Financial Information EXchange, IBM WebSphere MQ, Enterprise Messaging Systems, Software Architecture, Standard Sql, Software Engineering, Cloud Platform System, Real Time Systems, Event Driven Architecture, Solid Principles, Apache Kafka, Microservices - **Published:** September 9, 2026 - **Apply:** https://www.collegerecruiter.com/job/2856366214-senior-software-engineer--software-architect--cnet--global-commoditiestrading--london ## About the Role You'll bring deep C#/.NET expertise, strong software design principles and experience architecting enterprise platforms within financial services, ideally across capital markets, trading or investment banking. This is a genuinely engineering-led architecture role. You'll also have experience leading engineers and influencing technical direction, working closely with developers, product teams and senior stakeholders to turn complex business requirements into scalable technology., * 10+ years' software engineering experience, with deep C#/.NET expertise * A genuine background as a Software Developer / Software Engineer before moving into architecture or technical leadership * Experience as a Software Architect, Lead Engineer, Principal Engineer or similar * Proven experience architecting platforms that multiple development teams build upon * Experience leading engineers, mentoring technical teams and setting engineering standards * Strong understanding of software architecture, design patterns and distributed systems * Strong SQL experience * Experience with Azure / cloud-based platforms * Experience designing microservices, APIs and event-driven architectures * Experience with messaging technologies such as Kafka and/or IBM MQ * Strong understanding of scalability, resilience, performance and security * Experience working directly with senior business and technology stakeholders * Ideally, experience within financial services, capital markets, investment banking or trading technology * Financial Markets Experience - experience in trading technology would be highly advantageous, particularly exposure to Trading platforms / Electronic trading / Derivatives * Real-time market data and Trade lifecycle and post-trade technology * FIX Protocol and CCP / vendor connectivity **Knowledge of MiFID II, EMIR, DORA or CFTC would also be beneficial. ## Description You won't simply be producing high-level designs and handing them over to engineering. You'll be close to the engineering; shaping how platforms are built, setting technical standards, designing reusable frameworks and integration patterns, and providing technical direction to development teams. You'll be the person other engineers come to when they're asking: \"How should we build this?\" It's a role for someone who wants to be the technical authority behind the platform, rather than simply another layer of architecture governance. What you'll do: * Architect and evolve large-scale software platforms used by multiple engineering teams * Define the frameworks, patterns and technical foundations developers build upon * Make key architectural decisions across complex, business-critical systems * Set engineering standards around software design, scalability, resilience, security and performance * Work closely with senior developers and engineering teams to turn architecture into working software * Design APIs, event-driven architectures, messaging and integration patterns * Shape platform modernisation across cloud and distributed environments * Provide technical leadership across multiple development teams * Mentor senior engineers and help develop technical capability within the wider engineering organisation * Work directly with Product, Business and Technology stakeholders to understand requirements and shape the right technical approach * Own technical roadmaps and contribute to longer-term technology strategy * Remain close enough to the engineering detail to challenge designs, make informed decisions and guide implementation * Support the evolution of business-critical trading platforms and real-time systems ## Related Videos - [How to Benchmark Your Apache Kafka](https://www.wearedevelopers.com/videos/76-how-to-benchmark-your-apache-kafka) - [How building an industry DBMS differs from building a research one](https://www.wearedevelopers.com/videos/768-how-building-an-industry-dbms-differs-from-building-a-research-one) - [Microservices: how to get started with Spring Boot and Kubernetes](https://www.wearedevelopers.com/videos/242-microservices-how-to-get-started-with-spring-boot-and-kubernetes) - [Microservices architecture as a key element in building trading systems for global finance markets](https://www.wearedevelopers.com/videos/1196-microservices-architecture-as-a-key-element-in-building-trading-systems-for-global-finance-markets) - [Event-Driven Microservices: Patterns and Practices - Lutz Heunkhen](https://www.wearedevelopers.com/videos/1826-event-driven-microservices-patterns-and-practices-lutz-heunkhen) - [Let's Get Started With Apache Kafka® for Python Developers](https://www.wearedevelopers.com/videos/565-let-s-get-started-with-apache-kafka-for-python-developers) ## Related Articles - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)