Software Developer
$87.1k - $157.45kLeidos
Description
Leidos is seeking a Software Developer for a 200+ FTE technical development program supporting the Sponsor's Enterprise PKI System as well as IdAM IICAM, Authentication, Authorization, Attributes and Digital Policy Management. The Software Engineer will work with a team of developers, engineers and testers to support and modernize existing PKI systems as well as developing new systems for other networks.
Core business hours are typically from 9 AM - 3 PM, five days a week. Hours can be flexible for either early arrivals, and/or late departures. Some after hours or weekend work may be required to accommodate system deployments and upgrades.
The Candidate must have a strong working knowledge of Public Key Infrastructure (PKI) and understand key concepts like digital certificates and Certificate Authorities (CAs). It is highly desired the Candidate also have knowledge of Registration Authorities (RAs), key management practices, cryptographic algorithms, certificate revocation procedures, and trust models. Additionally, the ability to design a robust system to issue, manage, and revoke digital certificates while ensuring the integrity and authenticity of users and entities within a network is desirable. Candidates who do not have all these abilities, but have the ability to learn them, will be considered.
Primary Responsibilities:
The Developer will be part of a team of developers and cloud engineers that create new features for legacy PKI systems as sponsor's mission continues to expand and evolve.
Our team also builds new systems as new mission needs arise.
We are actively working to build new PKI systems on other networks.
Our work rhythm revolves around the Scrum agile framework to deliver incremental enhancements on a 3-week cycle.
Developers actively participate in planning deliverables and grooming the Jira backlog.
We rely on team collaboration to continually fine tune performance and ensure clear communication.
Developers also participate in a team rotation of O&M responsibilities.
They are required to be on-call for after-hours support approximately one week every three months.
Required Qualifications:
Must have an active TS/SCI with Polygraph to be considered
Must have a Bachelor degree and at least 4 years of demonstrable experience
Experience creating applications with Java, Springboot, and Amazon Web Services for backend components, focusing on low-latency, high-throughput distributed systems and as new systems are built, additional programming languages may be used.
Experience working closely with product owners, business analysts, and other teams to translate business requirements into technical solutions.
Experience analyzing and decomposing complex software systems and creating designs for scalability, testability, and performance.
Experience writing custom scripts to install and configure code in EC2 instances.
Experience using Git.
Experience using CloudFormation scripts.
Experience creating RESTful API.
Experience using XML, JSON and YAML.
Experience creating applications/services using Java, JavaScript, and bash scripting.
Working with the team's security engineer to address, mitigate security findings stemming from system security scans.
Experience with relational databases such as PostgreSQL and MySQL and use of SQL or PLSQL.
Develop APls to Integrate systems and services.
Hands-on experience with Linux (CLI).
Hands on experience with scripting and Java.
Experience with scripting and programming languages like BASH and Python.
Desired Quals:
Experience with Public Key Infrastructure (PKI) and understand key concepts like digital certificates, Certificate Authorities (CAs), Registration Authorities (RAs), key management practices, cryptographic algorithms, certificate revocation procedures, and trust models.
Experience with Jenkins.
Experience delivering containerized applications with services similar to Docker and Kubernetes.
Experience creating applications/services using Python.
Experience with Elasticsearch and/or Kibana.
Experience creating applications that rely on tokenization.
Understanding of Identity Access Management (lAM) and Zero Trust concepts.
Experience building microservices.
Experience with automated testing frameworks such as Katalon Studio or Selenium.
FIP
If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.
Original Posting:
July 29, 2026
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range:
Pay Range $87,100.00 - $157,450.00
The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
About Leidos
Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit .
Pay and Benefits
Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at .
Securing Your Data
Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at View email address on click.appcast.io .
If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission ( .
Commitment to Non-Discrimination
All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.
REQNUMBER: R-00188341
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.
- ...Software Developer (Full Stack Developer) Chantilly, VA SV-SD-CHY-001 Responsibilities include: - Analyzing client and business requirements and designing appropriate cloud-based systems and architectures - Developing, testing, and debugging cloud-native...Suggested
- ...architectures for use within the IS and Network Environment. Design and develop cybersecurity-enabled products for use within an IS and... ...s). Ensure that the design of hardware, operating systems, and software applications adequately address cybersecurity requirements for...SuggestedWork at office
- ...Java Full Stack Developer Job Location: Chantilly, VA (On-site 100%) Active TS/SCI security clearance. Need to have Current CI Poly or... ...Cohere is looking for a self‑starting, team‑oriented Mid‑to‑Senior Software Engineer to join our dynamic development team in supporting a...Suggested
$152.6k - $190.7k
...training, fine-tuning, and leveraging Large Language Models (LLMs) for search, summarization, and business intelligence, as well as developing advanced financial, budget, and scheduling analysis models. Data Exploitation: Work directly with massive, unstructured and...SuggestedFull timeContract workFor contractorsWork at officeLocal areaFlexible hours$62k - $141k
...background in network engineering, systems administration, or software development, if you have a passion for making systems better, we... ...Engineer (SRE) on our team, you’ll help the Intelligence Community develop more robust systems by building a resilient infrastructure. You...SuggestedFull timeContract workPart timeWork at officeLocal areaRemote work- ...Accenture Federal Services is seeking a Java Developer in Chantilly, Virginia, responsible for the full agile development lifecycle of J2EE applications. Specifically, you'll work on design, construction, and testing of components to support project goals. The ideal candidate...
- ...Java Software Engineer Java software engineer to support the Chantilly, VA medical laboratory. The primary responsibility is to design and code instrument interfaces that automate communication between laboratory instruments and our software systems. Onsite technical...Work experience placement
- ...Security Clearance : TS/SCI with Fullscope Polygraph Position Seeking a Software Developer to support an Intelligence Client. Bachelor's Degree in Computer Science, EE, or related STEM field, with 3+ years of experience (or 3 additional years of experience...Full timeTemporary workFlexible hours
- ...Experience prioritizing work for Sprint cycles \\\\ Experience developing classification tools using scripts and web services. \\\... ...and CSS web user interfaces. \\\\\\ Experience conducting software compatibility tests with programs, hardware, and operating systems...Full time
- Quantech in Chantilly, VA seeks a versatile Facilities Project Manager to provide end-to-end management, facility engineering, and budget planning for a major IC organization. The role covers project execution, operations, maintenance, and strategic planning, with strong...
$69.4k - $158k
...Job Number: R0244750 Embedded Software Engineer The Opportunity: As an embedded software engineer, you know how to create and... ...communicate. We're looking for an embedded software engineer like you to develop technology for our clients' most important mission-forward...Full timeContract workPart timeWork at officeLocal areaRemote work- The Aerospace Corporation in Chantilly, VA, is seeking a senior staff or project engineer to lead teams in spacecraft operations, sensor networks, and mission planning. You will contribute to data management, mission verification, and analytical tool development, interfacing...
$10k
...that is rare within our industry. Support the customer with software development. Due to federal contract requirements, United... ...experience designing and instrumenting automated test scripts at the developer level Demonstrated experience developing in small...Hourly payFull timeContract workTemporary workWork experience placementSummer workImmediate start- Probity Inc. is seeking an experienced Network Engineer in Chantilly, VA. The role requires an ACTIVE Top Secret/SCI Clearance with Polygraph and a minimum of 15 years' experience in network engineering or a related field. Responsibilities include enhancing system reliability...
- ...role. MANTECH seeks a motivated, career and customer-oriented Software Application Support Engineer to join our technical support team... .... Familiarity with HTML, CSS, JavaScript, and browser developer tools (Inspect/Console) to diagnose front-end application behavior...Work at office
- ...methodologies in systems engineering Demonstrated experience developing and maintaining secure communications channels and network infrastructure... ..., Data orchestration platforms, System architectural design software (e.g., architectural modeling tools), Software for managing,...Work at officeLocal area
$135k - $200k
Seneca Technologies is part of the Seneca Nation Group (SNG) portfolio of companies. SNG is Seneca Holdings' federal government contracting business that meets mission-critical needs of federal civilian, defense, and intelligence community customers. Our portfolio ...Full timeContract workWork at officeFlexible hours- Overview VTG is seeking a Software Developer for a 200+ FTE technical development program supporting the Sponsor's Entitlement Programs as well as IdAM /ICAM, Authentication, Authorization, Attributes and Digital Policy Management. The Software Engineer will work with...
$120.8k - $265.8k
...Job Title: Software Developer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: None * * * The Opportunity...Full timeContract workWork experience placementImmediate startFlexible hours- 4309 Software Developer 4309 | Top Secret Job Description: OVERVIEW: We are seeking a highly skilled Software Developer with strong experience in Fortran and algorithm development to support mission-critical systems. The ideal candidate will work...
- ...BT-363 - Software Developer Location: Chantilly, VA (fully on-site, no remote option) **Please do NOT apply if you do not have an active Poly clearance. Those without a Poly will not be considered.** Support a team building an integrated enterprise IT support...Remote work
- ...SIGINT Software Developer LOCATION Chantilly, VA 20151 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking an innovative and driven SIGINT Software Developer to join our team and create...Temporary workFor contractorsImmediate startFlexible hours
$200k - $240k
...possible to empower our team and support our customers in building a safer global future. Two Six Technologies is hiring a Software Developer to support the customer's mission-essential applications within an Agile Team. The developer will be responsible for the...Contract workWork experience placementLocal area- ...based on given requirements. Demonstrated experience designing, developing, and maintaining various network environments, including... ...maintaining to current workstation and server operating system and software updates/patching versions. Demonstrated experience providing...Work at officeLocal area
$200k - $240k
...Description SAIC is seeking a Software Developer to maintain a network, records system, and other analytical applications that collect and analyze data related to business operations. This work is performed in a fast-paced and dynamic environment. The overall...$86k - $138k
...Software Developer Job Locations US-VA-Chantilly | US-MD-Bowie Requisition ID 2026-167598 Position Category Information Technology Clearance Public Trust Responsibilities Join Peraton in advancing the safety, efficiency...Contract workShift work- ...wired and wireless network infrastructure and related hardware & software. The project's objectives are to evaluate the current setup of... ...based on the deployment of network management software; Develop, maintain and deliver infrastructure documentation relating to...Full timeLocal areaMonday to FridayFlexible hours
- ...Software Developer The customer is seeking a software developer to provide support in an agile development environment developing new system capabilities and enhancements in the customer's cloud computing environment. Position is moving from Tysons to Chantilly in...For contractorsLocal area
- ...credentials will not be considered. Description: Introduction: Software Engineer to support an office that is accountable for... ...designing appropriate cloud-based systems and architectures. 2. Developing, testing, and debugging cloud-native applications using...Work at officeRemote work
- ...Are you a Software Developer with a passion for astrodynamics looking to apply your skills to cutting-edge space mission software? NS2 Mission is seeking an excellent Software Developer candidate to join our engineering team in Chantilly, VA working on the...Local areaFlexible hours
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Software Developer. Be the first to apply!
- ngo software engineer Chantilly, Loudoun County, VA
- software system engineer Chantilly, Loudoun County, VA
- entry level software engineer remote Chantilly, Loudoun County, VA
- software developer positions Chantilly, Loudoun County, VA
- software development engineer aws Chantilly, Loudoun County, VA
- consulting software engineer Chantilly, Loudoun County, VA
- financial software developer Chantilly, Loudoun County, VA
- software developer Chantilly, Loudoun County, VA
- software engineer healthcare Chantilly, Loudoun County, VA
- cybersecurity software engineer Chantilly, Loudoun County, VA



