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# Senior Software Engineer - OTC

- **Company:** Gravity Team Ltd
- **Location:** Amsterdam, Netherlands
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Algorithmic Trading, Amazon Web Services, C Sharp (Programming Language), C++ (Programming Language), DevOps, Payment Gateway, Backend, Build Management, Information Technology, Api Design, Data Pipelines, Web Api
- **Published:** July 9, 2026
- **Apply:** https://www.jobbird.com/nl/vacature/25382892-senior-software-engineer-otc

## About the Role

* 5-10+ years of experience in backend development (senior+ level).
 * Strong track record in deep-tech backend systems - especially in fintech, trading, payments, or crypto, gaming.
 * Hands-on knowledge of compiled languages, ideally Rust, or Go/C++ with the ability to pick up Rust fast. Java, C# also ok.
 * Experience building and maintaining real-time API-based systems.
 * Self-starter comfortable with ambiguous product definitions and driving execution independently. Business focused.
 * Understands high-stakes software environments: downtime or bugs = financial loss.

Nice to have

 * Has built or maintained OTC desks or financial trading infrastructure before.
 * Has worked in hedge funds, crypto exchanges, or payment processors (e.g., Decta, TransactPro, Luminor, 4finance, Tieto, etc).
 * AWS/DevOps familiarity - should be able to manage own deployments.
 * Experience with capital management, exchange APIs, or payment gateways.
 * Results in informatics/math olympiads or strong academic background in quantitative fields.

## Description

This is a top engineering focus this year because it directly affects trading revenue and risk exposure.
What you will work on

 * Design and implement the backend of a proprietary OTC trading system in Rust.
 * Design and build web APIs to support system operations and internal interfaces.
 * Maintain and expand integrations with exchanges through custom APIs.
 * Develop monitoring, testing, and deployment automations to keep the platform resilient and scalable.
 * Optimize for performance and system uptime - small mistakes here = big financial impact.
 * Work independently and iterate fast in a low-bureaucracy, high-ownership environment.
 * Contribute to adjacent areas: capital allocation logic, payment processes, data pipelines.


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