Senior Software Engineer (Java/C++) — Hybrid & On-site Lead

Frazer-Nash Consultancy; Leatherhead; Hybrid; GBP 45,000 - 68,000; Full time

Benefits offered by this job

Pension scheme

Private healthcare membership

Bonus

Cycle to work

Rail ticket loan

Job summary

Frazer-Nash Consultancy in Leatherhead is seeking an Experienced Software Developer to design, develop, and maintain robust software components in Java and C++. The role involves on‑site client work in the Basingstoke area, with a hybrid pattern and potential travel up to 5 days per week.

You will join a multidisciplinary team working at the intersection of software engineering, numerical modelling, and domain science, mentoring junior developers and contributing to proposals and technical

Qualifications

• Professional experience developing software in Java and C++.
• Practical experience applying object‑oriented design principles and modular software architectures.
• Familiarity with collaborative development practices, including Git and CI/CD pipelines.
• Experience working across the full software development lifecycle, including design, implementation, testing, and maintenance.
• Knowledge of software testing techniques and a commitment to writing reliable, maintainable code.
• Solid analytical and problem‑solving skills, with the ability to work effectively both independently and as part of a multidisciplinary team.
• The confidence and communication skills to work directly with clients and technical stakeholders.
• Sole UK nationality, due to the nature of the work.

Responsibilities

• Design, develop, and maintain high‑quality software components using Java and C++, with a focus on robustness, performance, and maintainability.
• Implement and extend code that interacts with a flexible integration framework for solver coupling and data exchange.
• Work closely with clients, domain scientists, and computational engineers—often on‑site—to understand requirements and translate them into effective software solutions.
• Contribute to defining and evolving software architecture, balancing performance, scalability, and long‑term maintainability.
• Write clean, well‑documented, and testable code in line with scientific software development best practices.
• Participate regularly in code reviews, debugging sessions, and performance profiling to improve code quality across the team.
• Support and mentor junior developers through technical guidance, constructive review, and knowledge sharing.
• Over time, take on increasing responsibility for guiding technical direction and contributing to the planning, delivery and management of project work.
• Help develop client relationships and contribute to development of new business, such as through writing effective proposals.
• Thrive in a consultancy environment solving real‑world, high‑consequence challenges.

Skills

Java

C++

OO design

Problem solving

Client communication

Tools

Git

CI/CD

JUnit

Google Test

Spring

SQL

Fortran 90

Job description

Frazer-Nash Consultancy in Leatherhead is seeking an Experienced Software Developer to design, develop, and maintain robust software components in Java and C++. The role involves on‑site client work in the Basingstoke area, with a hybrid pattern and potential travel up to 5 days per week.

You will join a multidisciplinary team working at the intersection of software engineering, numerical modelling, and domain science, mentoring junior developers and contributing to proposals and technical