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Lead Software Engineer (Full-Stack)
LinkedIn Recruiter Post
Lead full - stack development of enterprise - grade trading and post - trade applications in a capital markets environment.
About the role
- Full-Stack Software Engineer to develop and deploy innovative features at US Mobile. Focused on scaling connectivity for millions of devices through agile team collaboration.
Responsibilities
- Work on developing and deploying exciting new features
- Advise on technologies and present solutions to the team
- Take on legacy architecture and digital transformation projects
- Expand on our Node services suite of applications
- Document any new and undocumented processes and workflows
- Work in a start-up environment with lots to do and lots of hats to wear
- Assist in building tools to ensure a high-quality end-user product
- Help us scale to 10’s of millions of customers & connected devices
Requirements
- Strong full-stack engineer comfortable owning a feature from Postgres schema through WebSocket protocol to the React component the user clicks on.
- Deep Node.js + TypeScript experience. Strict TS, generics, discriminated unions — you reach for the type system before you reach for tests.
- Strong React. Modern hooks-era React; you've shipped non-trivial SPAs and know how to keep them fast under real load. Bonus if you've worked with React Native (especially native module / push / deep-link plumbing) or built embeddable / drop-in components.
- Experience with relational data modeling and SQL (Postgres preferred). You know what an index does and when it doesn't.
- Comfort with real-time systems — WebSockets, pub/sub, presence, reconnection, backpressure. You understand why at-least-once delivery is a different problem from exactly-once.
- Experience with queues and async fan-out (SQS, RabbitMQ, Kafka, Redis Streams).
- Working knowledge of AWS and containerized deployments (EKS / Kubernetes, or equivalent). You don't need to be an SRE, but you should be able to read a Terraform plan and know what an ALB is doing.
- Solid API design instincts — REST contracts, versioning, OpenAPI / typed clients, idempotency, pagination.
- Care about security and compliance. You'd push back if someone proposed logging message bodies to CloudWatch.
- A bias toward clean, appropriately tested code and clear written communication — specs, ADRs, PR descriptions that explain the why.
- Strong communication and writing — most of our coordination is async and in-doc.
- An ability and desire to help teammates grow through mentorship and code review.
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