Software Developer

Job Overview

At Mustard, we value quick delivery and real‑world impact over perfect code. If you thrive on solving problems quickly and enjoy a flexible, outcome‑focused culture, this role could be a great fit.

What You’ll Work On

Expand access to new liquidity providers using advanced web‑scraping and reverse‑engineering techniques.

Develop and maintain low‑latency real‑time data feeds to support trading strategies.

Enhance system visibility for our teams, providing insights into integration issues and improvements.

Key Responsibilities

Design and build impactful features that align with business goals, delivering high‑quality code that adds measurable value.

Collaborate on code quality: review, test, and ensure functionality, maintainability, performance, and quality standards.

Take ownership of production software, ensuring stability and addressing issues quickly.

Collaborate cross‑team, partnering with traders and quants to design solutions to real business problems.

Participate in out‑of‑hours support for our software systems.

Core Tech Stack

Languages: Python 3.10+, JavaScript/TypeScript for frontend, Go for select infrastructure.

Tools: RabbitMQ, Kafka, PostgreSQL, Redis.

Environment: Linux servers.

Observability: OpenTelemetry, Prometheus, Grafana, Zabbix.

Requirements

Must‑Haves

Strong background in software development with extensive experience in Python.

A degree in Computer Science or a numerical subject from a top university.

Exceptional communication skills, able to convey complex technical ideas clearly to technical and non‑technical audiences.

Strong decision‑making abilities, adept at making thoughtful trade‑offs in implementation and architecture.

Experience with web‑scraping and reverse‑engineering techniques, including working against bot‑protection tooling.

Nice‑to‑Haves

Familiarity with building event‑driven systems.

Comfort with Linux/Unix environments.

Track record of driving successful cloud migrations, ideally to AWS, including setting up secure, scalable accounts and access structures.

Benefits

Competitive salary with significant bonus potential.

Enhanced pension match with salary sacrifice option.

Health insurance and life assurance.

Sabbatical leave after five years.

33 days of annual leave (including bank holidays).

Seniority Level

Mid‑Senior level

Employment Type

Full‑time

Job Function

Engineering and Information Technology

Location

London, England, United Kingdom

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