Software Developer

Leidos Holding$87K — $157K *
Technical Services
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Active TS/SCI with Polygraph is required
  • Bachelor's degree and at least 4 years of relevant experience
  • Proficient in Java, Springboot, and AWS, with focus on distributed systems
  • Experience in translating business needs into technical solutions
  • Skilled in analyzing and designing scalable software systems
  • Familiarity with Git, CloudFormation, and creating RESTful APIs
  • Hands-on experience with relational databases like PostgreSQL and MySQL.

Responsibilities

  • Collaborate with developers and engineers to enhance legacy PKI systems
  • Build new PKI systems to meet evolving mission needs
  • Utilize Scrum framework for agile delivery of new features
  • Participate in planning and backlog grooming activities
  • Engage in team collaboration to enhance performance and communication
  • Handle O&M responsibilities on a rotating schedule
  • Provide on-call support approximately once every three months.

Benefits

  • Flexible core business hours from 9 AM - 3 PM
  • Potential for early or late arrival options
  • Engagement in a dynamic and expanding mission environment
Full Job 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

Original Posting:
July 29, 2026

Pay Range:
Pay Range $87,100.00 - $157,450.00

The Leidos pay range for this job level is a general guideline only and 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 Holding

Leidos Holding Careers

Joining Leidos Holding presents an unparalleled opportunity to advance one's career with a leader in innovation and technology. The company offers a plethora of job opportunities aimed at fostering professional growth and development in a diverse and inclusive environment.

Explore Career Opportunities

Leidos Holding is actively seeking skilled professionals who are passionate about leveraging their expertise to drive innovation and leadership in their fields. With a variety of open positions, Leidos Holding provides a platform for individuals to challenge themselves in a dynamic work environment.

Innovation and Professional Growth

At Leidos Holding, innovation is at the core of everything they do. Employees are encouraged to think creatively and push boundaries. The company supports this drive for innovation through comprehensive professional development and diversity training programs that are designed to enhance skills and foster leadership.

Commitment to Diversity and Inclusion

Leidos Holding is committed to creating a workplace where diversity is not only recognized but celebrated. With a culture that values and promotes diversity, Leidos Holding ensures that all team members have the opportunity to contribute, learn, and grow.

Internship Programs

For those starting their career, Leidos Holding offers internship programs that provide a robust foundation in the industry. Internships are a great way to develop essential skills, gain valuable work experience, and build professional networks.

Benefits and Culture

Employees at Leidos Holding enjoy a range of benefits designed to support their professional and personal lives. The company culture is built on a foundation of respect and integrity, providing a supportive and collaborative environment where every team member is valued.

Join the Team

Leidos Holding is hiring! Explore job opportunities that match your skills and interests. Leidos Holding looks for driven, curious, and innovative individuals to join their team. Positions are available across various disciplines and experience levels.

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Networking and Career Advancement

Leidos Holding encourages its employees to engage in networking within the company to discover new opportunities for career advancement. The leadership team at Leidos Holding is dedicated to supporting employees in their career paths with ample opportunities for networking and growth.

Explore Leidos Holding Jobs and Careers

Discover the exciting career opportunities at Leidos Holding today. With a commitment to employee growth, innovation, and diversity, Leidos Holding is the perfect place to advance your career. Check out the latest job listings and find your perfect fit at Leidos Holding.

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