Software Engineer

*Description* We are seeking Intermediate and Sr. Software Engineers to support a mission-critical national security program focused on advanced ground, space, and defense systems. This role offers the opportunity to contribute to technologies that support missile tracking, space domain awareness, intelligence operations, and strategic defense initiatives. As a member of a highly specialized engineering team, you will develop and maintain software that directly supports operational missions and decision-making capabilities used across some of the nation's most critical defense programs. Engineers in this environment work on complex technical challenges involving real-time data processing, mission systems integration, advanced algorithms, and high-performance software applications. This position is ideal for software engineers who are passionate about solving difficult technical problems, working within secure environments, and contributing to programs where reliability, performance, and mission success are paramount. *Mission* The team develops and sustains advanced software systems that process, analyze, and manage mission-critical data in support of national security objectives. Engineers work closely with multidisciplinary teams to enhance existing capabilities while developing next-generation solutions for evolving mission requirements. The systems supported by this program operate in highly demanding environments where software performance, scalability, and accuracy directly impact operational effectiveness. *Key Responsibilities* * Design, develop, enhance, and maintain software applications using C++ * Develop software solutions supporting mission systems, command and control systems, and data processing applications * Implement and test software features based on defined system and algorithm requirements * Collaborate with software engineers, systems engineers, and subject matter experts to deliver mission-focused capabilities * Participate in software architecture discussions, design reviews, and technical planning activities * Analyze, troubleshoot, and resolve software defects and performance issues * Develop and execute unit tests to validate software functionality and reliability * Support software integration, testing, deployment, and sustainment activities * Contribute throughout the entire software development lifecycle, including requirements analysis, design, implementation, testing, and maintenance * Ensure compliance with software engineering standards, processes, and best practices * Work within Agile, Waterfall, or hybrid development environments as required *Required Skills* * Strong professional experience developing software in *C++* * Object-oriented design and development experience * Experience working within *Linux environments*, including Red Hat Enterprise Linux (RHEL) * Understanding of software development lifecycle methodologies * Experience debugging, troubleshooting, and optimizing software applications * Ability to develop and maintain complex software systems in a team-based environment * Strong analytical and problem-solving skills * Effective written and verbal communication skills * Experience working on large-scale software development efforts *Basic Qualifications * * Active *Top Secret/Sensitive Compartmented Information (TS/SCI)* clearance * Bachelor's degree in Computer Science, Software Engineering, Computer Engineering, or a related STEM discipline and relevant professional experience * OR Master's degree in a related field and relevant experience * OR additional equivalent experience in lieu of a degree * Professional experience developing software using C++ * Experience working in Linux-based development environments * Experience with object-oriented software design principles * Experience working within Agile, Spiral, Waterfall, or similar development frameworks * Ability to work full-time on-site within a classified environment *Preferred Qualifications* * Experience supporting Department of Defense, Intelligence Community, Aerospace, Space, or National Security programs * Experience developing software for mission-critical systems * Experience with real-time operating systems (RTOS), including: * VxWorks * RT-Linux * FreeRTOS * INTEGRITY * Experience with embedded software development * Experience with software architecture and systems design * Knowledge of distributed systems and high-performance computing environments * Experience supporting software integration and system-level testing * Experience developing software based on mathematical models or algorithm requirements * Familiarity with hardware/software integration activities * Experience with verification and validation processes * Exposure to signal processing, radar systems, RF systems, or space-related technologies * Experience operating in secure or classified development environments *Why This Opportunity* This role provides the opportunity to work on advanced technologies that support critical national security missions. You will collaborate with highly skilled engineering teams, contribute to complex technical solutions, and have a direct impact on systems that play an important role in protecting strategic interests and supporting mission operations worldwide. For engineers seeking meaningful work, challenging technical problems, and the opportunity to apply their expertise in a mission-focused environment, this position offers a unique and rewarding career path. *Job Type & Location*This is a Contract to Hire position based out of Redondo Beach, CA. *Pay and Benefits*The pay range for this position is $45.00 - $75.00/hr. Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: * Medical, dental & vision * Critical Illness, Accident, and Hospital * 401(k) Retirement Plan - Pre-tax and Roth post-tax contributions available * Life Insurance (Voluntary Life & AD&D for the employee and dependents) * Short and long-term disability * Health Spending Account (HSA) * Transportation benefits * Employee Assistance Program * Time Off/Leave (PTO, Vacation or Sick Leave) *Workplace Type*This is a fully onsite position in Redondo Beach,CA. *Application Deadline*This position is anticipated to close on Aug 11, 2026. About TEKsystems We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company. The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law. About TEKsystems and TEKsystems Global Services We're a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We're a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We're strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We're building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com. The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law. *San Francisco Fair Chance Ordinance:* Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records. *Massachusetts Lie Detector:* It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability. *Use of Artificial Intelligence (AI):* We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.