Expert Software Developer

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 Quals;

Active TS/SCI with Polygraph

Bachelor of Science (BS) degree and 16+ 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

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

Strong, hands-on experience with Linux (CLI)

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:
April 2, 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 $154,050.00 - $278,475.00

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.