---
title: 'Software Engineer (London) at Ansatz Capital'
canonical: 'https://feeny.ai/job/software-engineer-london-ansatz-capital-london-pfw0g87w0mrs'
type: 'job'
last_seen: '2026-09-07'
---

# Software Engineer (London) at Ansatz Capital

- **Company:** Ansatz Capital
- **Location:** London, United Kingdom
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2024-02-21
- **Last confirmed live:** 2026-09-07
- **Apply:** https://jobs.lever.co/ansatzcapital/cfe90d2c-b4c5-4200-80a2-d9f7c3b1ccd4

## Job description

We are looking for a software engineer to join a lean and technical quantitative trading startup. You’ll be responsible for developing and maintaining scalable trading applications and infrastructure for many financial markets and assist with developing the full stack of infrastructure to support trading operations.  The role is fast paced, with daily or even more frequent release cycles, and requires a good sense of prioritization between longer and shorter term needs.

Within our systems, from hardware drivers to TCP/multicast handlers to Python interfaces, each layer requires custom optimization for latency, bandwidth, or both. An understanding of trade-offs in terms of clock cycles and CPU cache effects is a must.  Multi-core/multi-threaded communications using lock-free algorithms will be employed to increase the theoretical computational limit per unit time; consequently, the candidate should have a good grasp of run-time behavior, serialization delays, and asymptotic behavior in this environment. Compensation consists of base salary, discretionary performance bonus, and possible participation in longer-term incentive schemes.

Skill Requirements

- C++11 and higher experience
- Excellent design and debugging skills
- Experience developing for production critical systems
- Excellent communication and prioritization skills

Technical Details About Us

- Linux shop running modern kernels
- C++20 codebase, Python layer on top
- Technical expertise throughout (everyone programs)
- Cloud-scalable research infrastructure

Desirable Skills

- Experience with Python
- Experience with x86 hardware
- Experience with performance engineering
- Understanding of Intel Xeon pipelining and cache behavior
- Experience with the TCP networking stack
- Experience optimizing Linux kernels / using kernel-bypass networking
- Experience leveraging AWS or similar cloud infrastructure

## Benefits

- Catered meals and bountiful snacks
- Generous budget for home office equipment
- Health / pension
- Fitness and wellness benefits
- Base compensation: £150,000-200,000 with additional discretionary annual performance bonus

## About Ansatz Capital

## Company Overview
- **One-liner**: Ansatz Capital is a quantitative trading firm in New York that applies scientific rigor and custom low-latency technology to trade across global financial markets.
- **Entity Type**: Private (no disclosed funding rounds)
- **Headquarters**: New York, New York, United States ([linkedin.com](https://linkedin.com/company/ansatz-capital))
- **Founded**: 2013 ([linkedin.com](https://linkedin.com/company/ansatz-capital))
- **Founders**: Albert Shieh and Charles Chen (Partners; co-founders based on leadership structure) ([linkedin.com](https://linkedin.com/company/ansatz-capital))

## Core Business
- **Primary industry**: Financial Services – Quantitative / Algorithmic Trading
- **Target customers**: Proprietary trading (the firm trades its own capital; no external clients)
- **Mission / purpose**: “Treat markets as an intellectual discipline—something that can be studied, refined, and innovated upon.” ([builtin.com](https://builtin.com/company/ansatz-capital))

## Products & Services
Ansatz Capital does not sell a product; its sole “offering” is its proprietary trading operation:
- **Proprietary Quantitative Trading**: The firm develops and runs its own trading strategies, leveraging a custom technology stack (C++20, Python, Linux, kernel-bypass networking) to achieve ultra-low latency and high-throughput across multiple asset classes. ([jobs.lever.co](https://jobs.lever.co/ansatzcapital/39609b59-4c21-44b8-bcaa-7209db6125cb))

## Market Standing
- **Valuation / Market Cap**: Not disclosed
- **Key Metric**: Total headcount of 17 employees (+5.3% YoY) ([linkedin.com](https://linkedin.com/company/ansatz-capital))
- **Notable Investors / Partners**: None publicly listed; the firm is fully self-funded (proprietary capital)
- **Growth Signals**: Small, lean team; expanding globally with offices in New York (HQ) and London; annual traffic to website grew +32.8% YoY ([linkedin.com](https://linkedin.com/company/ansatz-capital))

## Competitive Advantages
- **Highly technical, lean team** – Everyone programs, including researchers and management. The firm keeps headcount low to move fast and encourage deep collaboration.
- **Custom low-latency infrastructure** – Linux kernel tuning, C++20 codebase, lock-free algorithms, kernel-bypass networking, and cloud-scalable research infrastructure. ([jobs.lever.co](https://jobs.lever.co/ansatzcapital/39609b59-4c21-44b8-bcaa-7209db6125cb))
- **Culture of intellectual rigor** – Markets are treated as an academic discipline, fostering a collaborative environment where research is key.

## Strategic Focus
- **Technology-led innovation** – Continuously optimise the full stack (from hardware drivers to Python interfaces) for latency and bandwidth.
- **Talent acquisition** – Actively recruiting exceptional software engineers and research engineers in New York and London, with an emphasis on C++ and performance engineering skills.
- **Scalable research infrastructure** – Leveraging AWS and cloud technologies to support ever-growing research and trading capacity. ([jobs.lever.co](https://jobs.lever.co/ansatzcapital/39609b59-4c21-44b8-bcaa-7209db6125cb))

## Why Work Here
- **Hybrid & office culture** – Hybrid work model (New York & London); employees typically work from physical offices in downtown Manhattan and London. ([builtin.com](https://builtin.com/company/ansatz-capital))
- **Compensation & benefits** – Base salary $150,000–$250,000 (plus discretionary annual performance bonus), health/dental/vision, 401k, catered meals and snacks, generous home office equipment budget, fitness and wellness benefits. ([jobs.lever.co](https://jobs.lever.co/ansatzcapital/39609b59-4c21-44b8-bcaa-7209db6125cb))
- **Engineering culture** – “Everyone programs”; exposure to a full-stack trading system with fast release cycles. Emphasis on collaboration and intellectual curiosity. ([jobs.lever.co](https://jobs.lever.co/ansatzcapital/39609b59-4c21-44b8-bcaa-7209db6125cb))
- **Small team impact** – With only ~17 people, new hires can directly shape the firm’s technology and trading strategies. ([linkedin.com](https://linkedin.com/company/ansatz-capital))
- **Use of AI in hiring** – The firm may use AI tools to review applications, but final decisions are made by humans. ([jobs.lever.co](https://jobs.lever.co/ansatzcapital))

## Sources
1. [linkedin.com](https://linkedin.com/company/ansatz-capital)
2. [jobs.lever.co](https://jobs.lever.co/ansatzcapital/39609b59-4c21-44b8-bcaa-7209db6125cb)
3. [builtin.com](https://builtin.com/company/ansatz-capital)
4. [theorg.com](https://theorg.com/org/ansatz-capital)

## Other roles at Ansatz Capital

- [Internship (No intern program at this time)](https://feeny.ai/job/internship-no-intern-program-at-this-time-ansatz-capital-new-york-9pzwgsxd7g0j) — New York, NY
- [Research Engineer](https://feeny.ai/job/research-engineer-ansatz-capital-london-qems86qpyfya) — London, United Kingdom
- [Research Engineer](https://feeny.ai/job/research-engineer-ansatz-capital-new-york-nssg8xv6skd1) — New York, NY
- [Software Engineer](https://feeny.ai/job/software-engineer-ansatz-capital-new-york-ebfhmres972r) — New York, NY