Software Engineer

Experis UK; Cheltenham; On-site; GBP 65,000 - 90,000; Full time

Job summary

Experis UK is seeking an experienced Software Developer to join our team in Cheltenham. You will design, develop, and maintain high-performance back-end software using Java and C++ in Linux environments, delivering scalable and secure solutions.

You will lead technical design, mentor engineers, and collaborate with customers and cross-functional teams to translate requirements into robust APIs, microservices, and services. DV Clearance required.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related field.
• 5+ years' commercial experience with Java and/or C++ on Linux.
• Experience designing enterprise backend applications, APIs, and distributed systems.
• Strong multithreading and performance optimisation on Linux.
• Familiarity with Docker, Git, CI/CD, and Agile.

Responsibilities

• Design, develop, and maintain high-performance backend software solutions using Java and C++ within Linux-based environments.
• Lead the technical design and implementation of software components, services, and APIs.
• Implement robust, maintainable, and well-tested code with a strong focus on performance, reliability, scalability, and security.
• Provide technical leadership and mentoring to junior and mid-level software engineers.
• Support architectural decision-making and contribute to technical strategy and roadmaps.
• Conduct code reviews and ensure adherence to software engineering best practices and development standards.
• Investigate, troubleshoot, and resolve complex software defects, including issues relating to customer libraries and third‑party dependencies.
• Develop and maintain RESTful APIs, microservices, and distributed applications.
• Integrate and utilise static analysis, profiling, and debugging tools to maintain high software quality and code coverage.
• Containerise applications using Docker for streamlined deployment and scalability.
• Contribute to Continuous Integration and Continuous Deployment (CI/CD) pipelines and DevSecOps practices.
• Collaborate with customers, stakeholders, and cross‑functional teams to understand requirements and translate them into technical solutions.
• Ensure software quality, performance, maintainability, and security through rigorous testing, code reviews, and adherence to engineering best practices.
• Utilise version control and collaboration platforms including Git, Bitbucket, and GitLab.

Skills

Java

C++

Linux

REST APIs

Microservices

CI/CD

Git

Docker

Education

Bachelor's degree in Computer Science, Software Engineering, or related field

Tools

Docker

GitLab CI/CD

Jenkins

Azure DevOps

Git

Job description

Software Developer (Java/C++) - DV Clearance

About the Role

We are seeking an experienced Software Developer to join a dynamic and innovative team. In this role, you will be responsible for designing, developing, and maintaining high-performance backend software solutions using Java and C++ within Linux environments. You will work closely with customers and internal teams to understand requirements, define technical approaches, and deliver robust, reliable, and scalable solutions.

Key Responsibilities

• Design, develop, and maintain high-performance backend software solutions using Java and C++ within Linux-based environments.
• Lead the technical design and implementation of software components, services, and APIs.
• Implement robust, maintainable, and well-tested code with a strong focus on performance, reliability, scalability, and security.
• Provide technical leadership and mentoring to junior and mid-level software engineers.
• Support architectural decision-making and contribute to technical strategy and roadmaps.
• Conduct code reviews and ensure adherence to software engineering best practices and development standards.
• Investigate, troubleshoot, and resolve complex software defects, including issues relating to customer libraries and third‑party dependencies.
• Develop and maintain RESTful APIs, microservices, and distributed applications.
• Integrate and utilise static analysis, profiling, and debugging tools to maintain high software quality and code coverage.
• Containerise applications using Docker for streamlined deployment and scalability.
• Contribute to Continuous Integration and Continuous Deployment (CI/CD) pipelines and DevSecOps practices.
• Collaborate with customers, stakeholders, and cross‑functional teams to understand requirements and translate them into technical solutions.
• Ensure software quality, performance, maintainability, and security through rigorous testing, code reviews, and adherence to engineering best practices.
• Utilise version control and collaboration platforms including Git, Bitbucket, and GitLab.

Qualifications & Experience

• Bachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent commercial experience).
• 5+ years' commercial experience developing software in Java and/or C++, preferably within Linux environments.
• Strong understanding of software architecture, design patterns, and object‑oriented programming principles.
• Experience designing and developing enterprise‑scale backend applications, APIs, and distributed systems.
• Strong understanding of multithreaded and concurrent application development.
• Experience analysing, troubleshooting, and optimising software performance within Linux environments.
• Strong understanding of software debugging and diagnostic tools.
• Experience with relational and/or NoSQL databases.
• Familiarity with containerisation technologies such as Docker.
• Knowledge of CI/CD tools such as Jenkins, GitLab CI/CD, or Azure DevOps.
• Solid understanding of Git version control.
• Experience working within Agile software development environments.
• Excellent problem‑solving and analytical skills.
• Strong communication, collaboration, and stakeholder engagement skills.

Security Requirement: DV Clearance is required.