Sr. Software Engineer

Leidos; Bethesda (MD); Hybrid; USD 108,000 - 195,000; Full time

Benefits offered by this job

Flexible schedule

On-site in Bethesda, MD

Remote occasionally

Job summary

Leidos in Bethesda, MD is seeking a TS/SCI cleared Software Engineer to support a long-term DIA-NDOC DOMEX Technology Platform contract. You will develop Python microservices, deploy in Kubernetes, and work with Kafka and Elasticsearch for real-time data processing.

The role emphasizes collaboration within a mission-focused team, with a flexible schedule and on-site work at the client location in Bethesda. Growth and professional development are encouraged, with emphasis on secure, observable

Qualifications

• Bachelor’s degree with 6–10 years of related experience, or a Master’s with 4–8 years.
• Active TS/SCI clearance with ability to obtain and maintain a polygraph.
• Proficiency in Python and backend frameworks (FastAPI, Flask).
• Experience with Docker containers.
• Experience with ETL processes.
• Linux environment experience including bash scripting.
• Strong understanding of RESTful APIs and microservices.
• Kubernetes experience for deploying, monitoring, and debugging.
• Familiarity with Git and collaborative workflows.
• Experience with CI/CD tools (GitLab or Jenkins).

Responsibilities

• Design, develop, test, and maintain Python microservices.
• Implement Kafka producers and consumers for messaging.
• Integrate with Elasticsearch for real-time and batch data indexing and querying.
• Write unit and integration tests with high coverage and reliability.
• Build CI/CD pipelines and deploy services in Kubernetes clusters.
• Participate in design reviews, code reviews, and architecture planning.
• Monitor and troubleshoot production issues with observability tools.
• Contribute to technical documentation and knowledge sharing.
• Apply secure design practices and standard patterns.
• Collaborate across Systems Engineers, Software Engineers, and Operations.

Skills

Python

Kafka

Elasticsearch

Kubernetes

Docker

REST APIs

AGILE

Git

CI/CD

Linux

TS/SCI clearance

Education

Bachelor’s Degree

Master’s Degree

Tools

Docker

Kubernetes

Kafka

GitLab/Jenkins

Elasticsearch

Job description

Description

Are you ready to join Leidos all-star team? Through training, teamwork, and exposure to challenging technical work, let Leidos show how to accelerate your career path.

Leidos has an exciting opening for you as our next TS/SCI cleared Software Engineer supporting a long-term DIA-NDOC DOMEX Technology Platform (DTP) contract. You will work closely with Systems Engineers, Software Engineers, Architects, and Operations Engineering/Manager on a broad scope of activities extending across the development of systems to include middle-tier and backend engineering tasks. Have impact as part of a mission focused, solutions oriented, and adaptive team that values innovation, collaboration, and professional development. While most work is conducted on-site at our client location in Bethesda, MD, we offer a flexible schedule and, occasionally, some tasks may be performed remotely. The percentage of remote work will vary based on client requirements/deliverables.

Specifically, we are looking for a skilled Python developer to join our team to build and maintain scalable microservices that interface with Kafka for real-time messaging and Elasticsearch for data indexing and search. You'll deploy and monitor your services in a Kubernetes environment and collaborate with cross-functional teams in designing reliable, observable, and secure systems. Our client’s overall mission is to design and implement a data centric architecture that leverages cloud-based computing, artificial intelligence (Al), machine learning (ML) and cross-domain transfer systems.

You will work closely with the team on the following key tasks

• Design, develop, test, and maintain Python microservices

• Implement message consumers and producers with Apache Kafka

• Integrate with Elasticsearch for real-time and batch data indexing and querying

• Write unit and integration tests; ensure high code coverage and reliability

• Build CI/CD pipelines for your services and deploy them in Kubernetes clusters

• Participate in design discussions, code reviews, and architecture planning

• Monitor and troubleshoot production issues with observability tools

• Contribute to technical documentation and knowledge sharing within the team

• Utilizes software engineering and design methodologies appropriate to the development, integration, and production environment

• Foster an environment of collaboration with the different team members in the goal of providing quality service and product to our customers

To be successful in this role you need these skills (required):

• Bachelor’s Degree and 6-10 years of prior relevant experience or Masters with 4-8 years of prior relevant experience. Experience can be considered in lieu of a degree.

• Must possess an Active Top Secret/SCI clearance and ability to obtain and maintain a Polygraph

• Proficiency in Python and related backend frameworks (e.g., FastAPI, Flask).

• Experience with containerization, especially with Docker

• Experience in Extraction, Transformation, and Load (ETL)

• Hands-on development experience in a Linux environment including bash or bash-like scripting

• Strong understanding of RESTful APIs and microservice architecture

• Hands-on experience with Kubernetes: deploying, monitoring, and debugging services

• Understanding of common design patterns, security practices, and logging/monitoring principles

• Familiarity with Git and collaborative workflows (PRs, reviews)

• Experience with DevOps practices and tools including Continuous Integration/Continuous Delivery (CI/CD) tools and practices, especially Gitlab or Jenkins

• Strong verbal and written communication skills

• Experience with AGILE practices

• Enthusiastic with the ability to work well in a team and a self-starter who can work on their own

You will wow us even more if you have some of these skills:

• Experience with designing and implementing software development kits

• Familiarity DGX (Deep GPU Xceleration)

• Active Security+ certification and ability to obtain Privileged User Account (PUA) certification by the Government

• Elasticsearch certifications or other program stack related certifications

• Experience of a production/enterprise systems at scale

• Knowledge of distributed systems concepts (e.g., idempotency, eventual consistency)

• Familiarity with schema registries and Kafka streaming patterns

• Experience blending analytical methodologies and leveraging existing COTS/GOTS/OS tools in an unconventional manner.

• Experience with Amazon Web Services (AWS/C2S)

• Familiarity or experience with building applications around Large Language Models, Agentic AI

#NMECDTP-Leidos

#ASBA

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:

August 13, 2026

Pay Range:

Pay Range $107,900.00 - $195,050.00

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 www.Leidos.com

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 www.leidos.com/careers/pay-benefits

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.