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TR
Trayport

Senior Software Developer

LocationLondon - 2 Gresham Street
Typefull-time
SenioritySenior
Company size14+ people
PostedOct 7, 2026 · 5d ago
Verified live1h ago
At a glanceSummarised by Seekless from the posting.
Must have2
many years of experience building and supporting large-scale software systems
comfortable talking to infrastructure engineers about networking issues or kernel tuning as well as reporting .NET garbage collector bugs to Microsoft
Skills
GitHub Copilot
C#
Rust
SQL
Kafka
RabbitMQ
AWS
Azure DevOps
Splunk
Grafana
Pyroscope
Prometheus
.NET
About the role
We’re looking for skilled SRE engineers who will focus on improving the reliability and scalability of Joule Direct, a widely used energy trading platform. You will work across our cross-functional teams of software engineers, quality engineers and devops engineers to help drive systemic improvements to the reliability of our systems.
Ideally you have many years of experience building and supporting large-scale software systems and you feel comfortable talking to infrastructure engineers about networking issues or kernel tuning as well as reporting .NET garbage collector bugs to Microsoft!
The Role
We’re looking for Senior Software Engineers to join our Joule Direct team, to help us build and improve our high-throughput, low-latency energy trading platform. You’ll be working with some amazing technologists to solve complex problems.
About the company
For us, teamwork is everything. We listen to each other, we adapt, we evolve and we strive to innovate. We are making significant investments in our business and we will invest in you.
Responsibilities
Some of the work on any given day includes:
•
Improve how we connect to an Exchange or Broker (eg. CME, ICE, EEX, etc)
•
Implement customer facing features via SDKs and APIs
•
Improve observability in hot paths
•
Implement a new Automated Trading feature
•
Benchmarking code to reduce latency and improve throughput
•
Mentoring and coaching junior engineers
•
Design, plan and execute complex features and raise RFC’s
Our Tech Stack
•
We use GitHub Copilot for agentic development
•
Our services are written in modern C# and Rust
•
We use a fair bit of SQL databases, Kafka, and RabbitMQ
•
We run some services on dedicated hardware and on AWS
•
We use Azure DevOps for build/deploy pipelines and story management
•
Our observability stack is Splunk, Grafana, Pyroscope and Prometheus
More roles at Trayport
GRC AnalystPrincipal Platform EngineerJunior Platform EngineerDesktop Suport AdministratorHR Assistant
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