> Markdown version of [/jobs/ext/4625034-senior-back-end-developer-trading](https://www.wearedevelopers.com/jobs/ext/4625034-senior-back-end-developer-trading). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Senior Back-End Developer (Trading)

- **Company:** Toyota-lift of Minnesota Inc.
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Salary:** $70,000.0 - $90,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), .NET Framework, Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Amazon S3, C Sharp (Programming Language), Continuous Integration, Command-Query Responsibility Segregation (Software Development), Software Design Patterns, Digital Assets, Distributed Systems, Amazon DynamoDB, Identity and Access Management, NoSQL, Object-Oriented Software Development, Performance Tuning, Azure DevOps Pipelines, SignalR, SQL Databases, Web Applications, WebSocket, Multithreading, Concurrency, AI Coding Agents, Backend, Git, Kotlin, Integration Tests, Kubernetes, Information Technology, OpenSearch, Golang, Microservices
- **Published:** November 7, 2026
- **Apply:** https://arc.dev/remote-jobs/j/redirect/px8ek3ugsl

## About the Role

* Bachelor's degree in Computer Science, Engineering or a related technical field
 * 5+ years building back-end systems in a strongly typed language (e.g. C#/.NET, Java, Kotlin, Go), ideally in trading, fintech or digital-asset environments
 * Strong grasp of OOP, design patterns, distributed systems, concurrency, multithreading and performance optimisation
 * Experience with SQL and NoSQL databases, CI/CD, Git and testing frameworks
 * Strong problem-solving, attention to detail and ownership in a fast-paced environment
 * Daily, hands-on use of AI coding agents on production work (not just autocomplete), with the judgement to give them the right context and to review and own what they produce
 * Fluent written and spoken English

Nice to have

 * Strong C#/.NET experience , ideally including low-allocation, high-performance code (Span, pooling, hand-built serialisation)
 * Familiarity with electronic trading, FX, market making or brokerage systems (OMS/EMS, RFQ, smart order routing, FIX), with knowledge of pricing, spreads, order books and pre/post-trade controls
 * Experience with real-time services with many concurrent WebSocket connections, and market or time-series data at scale
 * Knowledge of tokenised products and DeFi vaults, including on-chain integration
 * Experience with AWS (EKS, DynamoDB, Cognito, IAM) and Kubernetes in production
 * Autonomy and ownership: you take loose problems to production in small, reviewable PRs, follow your code after release, write clearly, and work directly with Operations, Compliance and Finance
 * Curiosity for finance, digital assets and the regulatory side of what we build
 * Italian is a plus

## Description

We're looking for a Senior Back-End Developer to join our Trading squad, which owns Hercle's trading and FX product. Our ambition: the most competitive institutional FX and digital-asset trading offering on the corridors that matter to our clients, on quote quality, client experience and operational efficiency., * Design, build and operate low-latency services for order management, RFQ and execution across multiple liquidity venues and providers

 * Build and evolve our tokenised products offering (e.g. DeFi vaults, tokenised MMFs), from subscription and redemption to on-chain settlement and position tracking
 * Scale our Price API and market data pipelines for accurate, fast and resilient institutional quotes
 * Automate the trade lifecycle end to end, from order capture to fees, booking and settlement, across traditional and on-chain rails
 * Turn trading-desk workflows into robust, auditable software, with product and compliance
 * Write clean, documented code, review peers' work, fix bottlenecks and bugs, and improve CI/CD

How We Build

Every squad works on our two C# code bases: the Execution API, the client-facing gateway exposing documented REST and real-time WebSocket (SignalR) APIs, and the Back Office API, used daily by Operations, Compliance and the trading desk. Behind them sits a fleet of domain microservices and provider integrations.

 * .NET 10 microservices over gRPC; event-driven internals with CQRS, domain events and background jobs
 * AWS throughout: EKS, DynamoDB (in-memory caches on the hot path), Cognito, OpenSearch, S3
 * Azure DevOps CI/CD, with integration tests run against real deployed environments
 * AI-first engineering: agents write and refactor code, review every PR and help investigate incidents

What You Will Work On

You own the latency-critical part of the platform: everything a client touches between asking for a price and seeing a trade booked.

 * Client-facing trading APIs: WebSocket streaming and execution, REST endpoints, real-time web app views
 * Orders, RFQ and two-way quote execution, where every millisecond and allocation counts
 * Price API, market data and the services behind them: orders, trades, quotes, fees, settlement
 * Desk tools (exposure limits, fees, pair rules) and integrations with venues, execution platforms and backtesting