Senior Software Engineer - TS/SCI

Sunayu Llc; Bethesda, Northern (MD, KY); Hybrid; USD 120,000 - 190,000; Full time

Benefits offered by this job

Medical plans

Dental and Vision

FSA/HSA

Life/AD&D

Disability insurance

EAP

Training assistance

PTO

Federal holidays

401k matching

Job summary

Sunayu, LLC is seeking a TS/SCI-cleared Software Engineer to develop Python microservices for a DIA-NDOC DOMEX Technology Platform. You will work with cross-functional teams on backend, middle-tier, and system integration tasks.

Most work is on-site in Bethesda, MD, with variable remote options by project. The role emphasizes scalable architectures using Kafka, Elasticsearch, Kubernetes, and cloud-enabled solutions.

Qualifications

• Active TS/SCI clearance and ability to obtain Polygraph.
• Bachelor’s Degree with 8+ years of relevant experience or Master’s with 6+ years.
• Proficiency in Python and backend frameworks (FastAPI, Flask).
• Experience with Docker, Kubernetes, and ELK stack.
• Strong RESTful API and microservice architecture knowledge.

Responsibilities

• Design, develop, test, and maintain Python microservices.
• Implement Kafka producers/consumers for real-time messaging.
• Integrate with Elasticsearch for indexing and search.
• Write unit/integration tests and ensure high code coverage.
• Build CI/CD pipelines and deploy in Kubernetes clusters.
• Participate in design reviews, code reviews, and architecture planning.

Skills

Python backend

FastAPI/Flask

Kafka integration

Elasticsearch

Kubernetes

CI/CD pipelines

RESTful APIs

Linux/bash

Git workflows

AGILE

Education

Bachelor’s or higher

8+ years experience / Masters 6+

Tools

Docker

Gitlab/Jenkins

Terraform/CI-tools

Job description

Location: Bethesda, MD
Category: Software Engineer
Travel Required:No
Remote Type: No
Clearance: TS/SCI

Sunayu, LLC 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 8 or more years of prior relevant experience or Masters with 6 or more 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 patternsExperience 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

Who We Are

Sunayu, LLC serves as a premier technology partner to the Defense and Intelligence communities, delivering mission-critical engineering solutions across the nation. Our operations are anchored in a commitment to trust, accountability, and ethical transparency, ensuring the high-performance outcomes necessary to protect our country's most vital interests.

Culture

Our strength lies in our community: Our team prioritizes collaboration, professional growth, and encourages open communication. At Sunayu, we don't just secure the mission—we grow together.

Career Development

We support and encourage our team members to continue their professional growth by providing company-reimbursed training and continuing education of up to $5,000 per year. We also participate in many industry conferences and events where we share our expertise and experiences.

Pay Rate

Salary range considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills, as well as market and business considerations when extending an offer.

Benefits

• 3 Medical Plan Options
• Dental and Vision
• FSA, DCFSA, HSA
• Life/AD&D Insurance
• Short-Term & Long-Term Disability
• Employee Assistance Program (EAP)
• Training and Educational Assistance
• Paid Time Off (PTO)
• 11 Federal holidays
• 401k plan with up to a 6% match (100% immediate vesting)

Equal Opportunity Employer

Sunayu, LLC is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, gender expression, national origin, age, protected veteran status, disability status, marital status, genetic information, medical condition, or any other characteristic protected by law.