Aspect Capital

About the Company

Aspect Capital is a global systematic investment manager, founded in 1997 by pioneers in quantitative investment techniques. Aspect has since grown into a team of over 130 professionals, managing over $7.0bn. Research and technology are at the core of what we do, ensuring the innovative evolution of our quantitative models. Our success is driven by our culture and our people - talented, engaging and passionate about the company.

Aspect is a certified B Corp. B Corps are businesses that aim to balance purpose and profit. They are legally required to consider the impact of their decisions on their workers, customers, suppliers, the community and the environment.

We are always on the lookout for exceptional individuals to join our team. Open roles are posted on our website.

Listed Jobs

Company Name

Aspect Capital

Job Title

Senior Software Engineering Contractor

Job Description

**Job Title:** Senior Software Engineering Contractor **Role Summary:** Seasoned Java engineer with 5+ years enterprise experience to lead a 12‑month contract improving a financial trading platform. Lead technical projects, upgrade legacy Java and Python stacks, and modernize CI pipelines for a high‑frequency trading environment. **Expectations:** - Upgrade core Java applications from 8 to 21, consolidate libraries. - Migrate Python (3.6→3.12) and JavaScript CI pipelines to unified, production‑grade pipelines. - Manage timelines, milestones and deliverables for upgrade phases. - Optional: pilot RenovateBot or similar tooling within budgeted time. **Key Responsibilities:** - Plan and execute phased upgrades of Java, Python, and JavaScript components. - Transform existing CI/CD workflows to Docker‑based pipelines using Maven and CI tools. - Collaborate with a small Software Development team to integrate enhancements into trading, back‑ and middle‑office systems. - Document design decisions, migration paths, and rollback procedures. - Act as a technical lead, mentoring junior developers on best practices. **Required Skills:** - Enterprise Java developer with Spring framework expertise. - Strong experience with Python and JavaScript. - Proficiency with Maven, Docker, CI/CD pipelines (Jenkins, GitHub Actions, or equivalent). - Proven project management: planning, scheduling, deliverable tracking. - Familiarity with Java upgrade strategies and dependency consolidation. **Required Education & Certifications:** - Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience). *(All information is provided for job matching; no additional context or fluff is included.)*

London, United kingdom

Hybrid

Senior

16-02-2026