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Software Developer - Careers at Leidos

Leidos

Software Developer - Careers at Leidos

full-timePosted: Feb 3, 2026

Job Description

Join Leidos as a Software Developer in Whiteley

Leidos UK & Europe is seeking an experienced Software Developer to support the development of an Air Traffic Management (ATM) system in Whiteley, Hampshire. No prior ATM experience required—comprehensive on-the-job training provided. This role demands SC clearance (attainment and maintenance required) and thrives in a fast-paced environment delivering high-quality software solutions to complex challenges.

Key Responsibilities

  • Design software using functional and object-oriented methodologies.
  • Implement logical and mathematical software solutions/tools.
  • Perform functional, unit, and early system integration testing.
  • Diagnose and resolve issues from testing.
  • Prepare operating instructions and document findings for stakeholders.
  • Adhere to software engineering standards, processes, and best practices.

Required Skills & Qualifications

  • Proven experience in C, C++, and Ada 95 development.
  • RTOS experience (e.g., Linux) and API knowledge.
  • Configuration management with tools like Subversion or Git.
  • Strong communication skills (verbal, email, presentations, reports).
  • Deep understanding of software development methodologies.

Desired Skills

  • Java, Python scripting, AWS, Docker/Puppet, Atlassian tools (Jira, Confluence).
  • Systems design tools like Enterprise Architect or Cameo Systems Modeller.

Why Leidos?

At Leidos, we make the world safer through technology in defence, healthcare, and transportation. Enjoy flexible work, career growth via academies and rotations, and a collaborative culture that empowers you. We're not for the complacent—we seek disruptors who outthink and outpace challenges. Competitive salary estimated at £45,000-£65,000 based on Fareham market rates for mid-level C++/Ada developers with SC clearance potential. Full-time, mid-level role.

Apply now to inspire change and build a safer world.

Locations

  • Whiteley, Hampshire, United Kingdom

Salary

Estimated Salary Rangehigh confidence

45,000 - 65,000 GBP / yearly

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • C and C++ developmentintermediate
  • Ada 95 developmentintermediate
  • API usageintermediate
  • RTOS development (e.g., Linux)intermediate
  • Configuration management (Subversion, Git)intermediate
  • Software development methodologiesintermediate
  • Java developmentintermediate
  • Infrastructure as code (Puppet)intermediate
  • Container technologies (Docker)intermediate
  • Atlassian tools (Jira, Confluence)intermediate
  • Public cloud platforms (AWS)intermediate
  • Scripting languages (Python)intermediate
  • Systems/software design tools (Enterprise Architect, Cameo)intermediate

Required Qualifications

  • Experience developing software in C and C++ (experience)
  • Experience developing software in Ada 95 (experience)
  • Knowledge of using APIs (experience)
  • Experience developing on Real Time Operating System (RTOS) like Linux (experience)
  • SC clearance (attainment and maintenance required) (experience)
  • Excellent verbal and written communication skills (experience)
  • Enthusiastic self-starter (experience)
  • Comprehensive understanding of software development methodologies (experience)

Responsibilities

  • Design software using functional and/or object-oriented methodologies
  • Implement software solutions and/or tools with logical and mathematical solutions
  • Conduct functional, unit testing and/or early system integration testing
  • Investigate problems identified during test, including diagnosis and resolution
  • Prepare operating instructions for software applications and/or tools
  • Document and present research findings to stakeholders
  • Apply appropriate standards, processes and principles in daily activities

Benefits

  • general: Flexible working arrangements (home, office, or customer sites)
  • general: Digital tools for smarter work
  • general: Technical academies and career development plans
  • general: Career rotations for growth
  • general: Opportunities to work on cutting-edge ATM systems and defence projects
  • general: Investment in learning new skills
  • general: Collaborative team environment
  • general: Purpose-driven mission in defence and security

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Tags & Categories

Jobs in Whiteley, Hampshire, UKLeidos CareersSoftware Developer United KingdomDefence IT JobsC++ Ada RTOSEngineeringInformation TechnologySecurity

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Leidos logo

Software Developer - Careers at Leidos

Leidos

Software Developer - Careers at Leidos

full-timePosted: Feb 3, 2026

Job Description

Join Leidos as a Software Developer in Whiteley

Leidos UK & Europe is seeking an experienced Software Developer to support the development of an Air Traffic Management (ATM) system in Whiteley, Hampshire. No prior ATM experience required—comprehensive on-the-job training provided. This role demands SC clearance (attainment and maintenance required) and thrives in a fast-paced environment delivering high-quality software solutions to complex challenges.

Key Responsibilities

  • Design software using functional and object-oriented methodologies.
  • Implement logical and mathematical software solutions/tools.
  • Perform functional, unit, and early system integration testing.
  • Diagnose and resolve issues from testing.
  • Prepare operating instructions and document findings for stakeholders.
  • Adhere to software engineering standards, processes, and best practices.

Required Skills & Qualifications

  • Proven experience in C, C++, and Ada 95 development.
  • RTOS experience (e.g., Linux) and API knowledge.
  • Configuration management with tools like Subversion or Git.
  • Strong communication skills (verbal, email, presentations, reports).
  • Deep understanding of software development methodologies.

Desired Skills

  • Java, Python scripting, AWS, Docker/Puppet, Atlassian tools (Jira, Confluence).
  • Systems design tools like Enterprise Architect or Cameo Systems Modeller.

Why Leidos?

At Leidos, we make the world safer through technology in defence, healthcare, and transportation. Enjoy flexible work, career growth via academies and rotations, and a collaborative culture that empowers you. We're not for the complacent—we seek disruptors who outthink and outpace challenges. Competitive salary estimated at £45,000-£65,000 based on Fareham market rates for mid-level C++/Ada developers with SC clearance potential. Full-time, mid-level role.

Apply now to inspire change and build a safer world.

Locations

  • Whiteley, Hampshire, United Kingdom

Salary

Estimated Salary Rangehigh confidence

45,000 - 65,000 GBP / yearly

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • C and C++ developmentintermediate
  • Ada 95 developmentintermediate
  • API usageintermediate
  • RTOS development (e.g., Linux)intermediate
  • Configuration management (Subversion, Git)intermediate
  • Software development methodologiesintermediate
  • Java developmentintermediate
  • Infrastructure as code (Puppet)intermediate
  • Container technologies (Docker)intermediate
  • Atlassian tools (Jira, Confluence)intermediate
  • Public cloud platforms (AWS)intermediate
  • Scripting languages (Python)intermediate
  • Systems/software design tools (Enterprise Architect, Cameo)intermediate

Required Qualifications

  • Experience developing software in C and C++ (experience)
  • Experience developing software in Ada 95 (experience)
  • Knowledge of using APIs (experience)
  • Experience developing on Real Time Operating System (RTOS) like Linux (experience)
  • SC clearance (attainment and maintenance required) (experience)
  • Excellent verbal and written communication skills (experience)
  • Enthusiastic self-starter (experience)
  • Comprehensive understanding of software development methodologies (experience)

Responsibilities

  • Design software using functional and/or object-oriented methodologies
  • Implement software solutions and/or tools with logical and mathematical solutions
  • Conduct functional, unit testing and/or early system integration testing
  • Investigate problems identified during test, including diagnosis and resolution
  • Prepare operating instructions for software applications and/or tools
  • Document and present research findings to stakeholders
  • Apply appropriate standards, processes and principles in daily activities

Benefits

  • general: Flexible working arrangements (home, office, or customer sites)
  • general: Digital tools for smarter work
  • general: Technical academies and career development plans
  • general: Career rotations for growth
  • general: Opportunities to work on cutting-edge ATM systems and defence projects
  • general: Investment in learning new skills
  • general: Collaborative team environment
  • general: Purpose-driven mission in defence and security

Target Your Resume for "Software Developer - Careers at Leidos" , Leidos

Get personalized recommendations to optimize your resume specifically for Software Developer - Careers at Leidos. Takes only 15 seconds!

AI-powered keyword optimization
Skills matching & gap analysis
Experience alignment suggestions

Check Your ATS Score for "Software Developer - Careers at Leidos" , Leidos

Find out how well your resume matches this job's requirements. Get comprehensive analysis including ATS compatibility, keyword matching, skill gaps, and personalized recommendations.

ATS compatibility check
Keyword optimization analysis
Skill matching & gap identification
Format & readability score

Tags & Categories

Jobs in Whiteley, Hampshire, UKLeidos CareersSoftware Developer United KingdomDefence IT JobsC++ Ada RTOSEngineeringInformation TechnologySecurity

Answer 10 quick questions to check your fit for Software Developer - Careers at Leidos @ Leidos.

Quiz Challenge
10 Questions
~2 Minutes
Instant Score

Related Books and Jobs

No related jobs found at the moment.