Software Engineer - Core IP Security

Barlowe LLP; Greater London; On-site; GBP 70,000 - 120,000; Full time

Benefits offered by this job

Discretionary bonus

Lunch & barista service

35 days leave

Pension contributions

Healthcare & life assurance

Cycle-to-work

Company events

Job summary

G-Research in London seeks a security-focused software engineer to design and operate high-assurance security systems across the platform, including cryptographic libraries and risk reporting.

You will work across the full stack—from services and APIs to infrastructure automation—contributing to auditing, CI/CD, and incident response in a collaborative, fast-moving environment.

Qualifications

• Production-quality software experience, preferably in C#/.NET.
• Strong understanding of software architecture, concurrency, distributed systems and API design.
• Experience with security-sensitive systems where auditability is critical.
• Clear communication and collaborative, pragmatic approach.
• Experience with CI/CD, code reviews and automated testing.

Responsibilities

• Designing and implementing high-assurance security systems to protect sensitive IP.
• Developing cryptographic key management services, access-control policies and libraries.
• Building access control, classification and risk-reporting systems for governance and auditability.
• Developing APIs and integrations that embed security controls into the platform.
• Contributing to detection and scanning capabilities for assets and controls.
• Operating and hardening security-critical infrastructure and dual-control environments.
• Disaster recovery planning, testing and execution for critical systems.
• Identifying opportunities to replace or improve existing systems.

Skills

C#/.NET

Distributed systems

API design

CI/CD

Testing & code review

Collaborative work

Tools

Linux

Kubernetes

Infrastructure as Code

Observability tooling

Job description

We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity. From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution - because the best ideas take time to evolve. Together we’re building a world-class platform to amplify our teams' most powerful ideas. Security is foundational to this mission and must be delivered in a way that supports how our engineering teams build and operate complex systems at scale. Take the next step in your career.

Key responsibilities

• Designing and implementing high-assurance security systems to protect sensitive and valuable intellectual property
• Developing and maintaining cryptographic key management services, access-control policies and shared security libraries
• Building and evolving access control, classification and risk-reporting systems to support governance and auditability
• Developing APIs and integrations that embed security controls into the wider engineering platform
• Contributing to detection and scanning capabilities to identify protected assets and validate controls
• Operating and hardening security-critical infrastructure, including physical server environments with dual-control operational procedures
• Participating in disaster recovery planning, testing and execution for critical security systems
• Identifying opportunities to simplify, replace or rebuild existing systems when better approaches are available

Who are we looking for?

A group of engineers who combine strong software development skills with an interest in security, cryptography and high-integrity systems. You should be comfortable working across the full stack, from service backends and APIs to cryptographic libraries and infrastructure automation in a collaborative, fast-moving environment. The ideal candidate will have the following skills and experience.

Essential:

• Strong experience delivering production-quality software, ideally using C#/.NET
• Strong understanding of software architecture, concurrency, distributed systems and API design
• Experience building or operating security-sensitive systems where correctness and auditability are critical
• Sound engineering judgement, balancing security, performance, reliability and delivery
• Clear communication skills and a collaborative, pragmatic approach
• Experience with modern development practices, including CI/CD, code review and automated testing

Highly desirable:

• Experience with cryptography, key management or security-sensitive infrastructure
• Experience with hardened environments, operational controls or shared security components
• Familiarity with access control, identity management or approval workflow engines
• Strong Linux, infrastructure automation and Kubernetes experience, including infrastructure as code and observability tooling
• Full-stack development experience for internal tools and dashboards

Nice to have:

• Experience with Python, TypeScript, Go or Rust
• Exposure to threat modelling, remediation or security architecture reviews
• Experience in regulated or security-conscious environments
• Familiarity with Git internals, self-hosted Git platforms or source code management security

Why join us?

• Highly competitive compensation plus annual discretionary bonus
• Lunch provided via Just Eat for Business and dedicated barista bar
• 35 days' annual leave
• 9% company pension contributions
• Informal dress code and excellent work-life balance
• Comprehensive healthcare and life assurance
• Cycle-to-work scheme
• Monthly company events

G-Research is committed to cultivating and preserving an inclusive work environment. We are an ideas-driven business and we place great value on diversity of experience and opinions. We want to ensure that applicants receive a recruitment experience that enables them to perform at their best. If you have a disability or special need that requires accommodation please let us know in the relevant section.

At G-Research, we are passionate about the intersection of finance, technology, and the future. We offer a dynamic, flexible and highly stimulating culture where world-beating ideas are cultivated and rewarded. We are proud to employ some of the best people in their field and to nurture their talent in our collaborative working environment.