Senior Software Engineer & Tech Lead

The One 23 Group Inc.; Herndon (VA); On-site; USD 150,000 - 190,000; Full time

Job summary

The One 23 Group is seeking a Senior Software Engineer & Tech Lead to guide engineering teams delivering Digital Engineering, Modeling & Simulation, software, cloud modernization, DevSecOps, data analytics, and AI-enabled capabilities for federal clients.

You will collaborate with program managers and government customers to ensure successful execution, mentor staff, and drive innovative, secure solutions in mission-critical environments.

Qualifications

• Bachelor's degree in Engineering, Computer Science, Information Systems, or related technical discipline.
• 8+ years of experience leading technical teams for federal customers.
• Experience delivering enterprise software, Digital Engineering, and AI-enabled solutions.
• Strong understanding of Agile software development and systems engineering.
• Experience engaging with government customers and executive stakeholders.
• Ability to obtain and maintain a U.S. Government security clearance.

Responsibilities

• Provide technical leadership across multidisciplinary teams in digital engineering, modeling & simulation, software engineering, cloud modernization, and AI-enabled capabilities.
• Oversee project lifecycle from planning to deployment and operation.
• Guide architecture decisions and ensure security and compliance alignment.
• Engage with government customers and stakeholders, supporting proposals and capture activities.

Skills

Leadership

Agile development

Government customers

Communication

Security clearance

Education

Bachelor's degree in Engineering/CS/IS

Tools

Azure

AWS

Kubernetes

Containerization

DevSecOps pipelines

Job description

Description

About The One 23 Group

At The One 23 Group (O23G), our mission is to set the benchmark for excellence in government services. We empower customers across the Department of War, Intelligence Community, Homeland Security, and Federal Civilian agencies through innovative technology solutions that strengthen national security and mission success.

Our expertise spans Operational Intelligence, Secure Digital Engineering, Infrastructure Engineering, Cybersecurity, Cloud Modernization, Data Analytics, and Artificial Intelligence. As a rapidly growing middle-market federal contractor, we combine the agility of an innovative technology company with the operational maturity and execution capabilities of a trusted government partner.

We invest in our people, foster a culture of innovation, and deliver mission-focused solutions that solve our customers' most complex operational challenges.

Position Overview

The One 23 Group is seeking a Senior Software Engineer & Tech Lead to support the execution and growth of advanced engineering programs supporting the Department of War, Intelligence Community, Homeland Security, and Federal Civilian agencies.

This role serves as the senior technical lead responsible for guiding multidisciplinary engineering teams delivering Digital Engineering, Modeling & Simulation, software engineering, cloud modernization, DevSecOps, data analytics, and AI-enabled mission capabilities. Working closely with Program Managers, Capture Managers, executive leadership, and government customers, you will help ensure successful program execution while supporting strategic growth initiatives across our portfolio.

This position is ideal for an experienced technical leader who enjoys solving complex customer challenges, mentoring engineering teams, and delivering innovative solutions within mission-critical environments.

Key Responsibilities

Technical Leadership

• Provide technical leadership across multidisciplinary engineering teams supporting Digital Engineering, Modeling & Simulation, software development, cloud engineering, DevSecOps, cybersecurity, data analytics, and AI-enabled capabilities.
• Mentor technical staff and foster a collaborative, high-performing engineering culture focused on quality, innovation, and mission success.
• Guide technical decision-making and ensure engineering solutions align with customer objectives, security requirements, and industry best practices.
• Promote engineering standards, documentation, configuration management, and continuous process improvement

Program Execution

• Partner with Program Managers to successfully execute complex federal technology programs.
• Provide technical oversight throughout the project lifecycle, including planning, architecture, implementation, testing, deployment, and operational support.
• Translate customer requirements into practical, scalable technical solutions.
• Identify technical risks and develop mitigation strategies to ensure successful program delivery.
• Coordinate technical activities across internal teams, subcontractors, and customer stakeholders.

• Solution Architecture & Engineering
• Support the design and implementation of secure, scalable enterprise solutions leveraging cloud-native architectures, APIs, automation, and modern engineering practices.
• Guide the integration of Modeling & Simulation, Digital Engineering, AI-enabled analytics, and visualization technologies into customer solutions.
• Evaluate emerging technologies and recommend innovative approaches that improve mission effectiveness.
• Ensure solutions align with cybersecurity, Zero Trust, and federal compliance requirements.

Customer Engagement & Growth

• Build trusted relationships with government customers and technical stakeholders.
• Participate in technical interchange meetings, solution demonstrations, and customer briefings.
• Support proposal development, technical solutioning, white papers, and capture activities.
• Collaborate with Business Development and Capture teams to shape future opportunities and expand customer relationships.

Requirements

Requirements

• Bachelor's degree in Engineering, Computer Science, Information Systems, or a related technical discipline.
• 8+ years of experience leading technical teams supporting Department of Defense, Intelligence Community, DHS, or Federal Civilian customers.
• Experience delivering enterprise software, Digital Engineering, Modeling & Simulation, DevSecOps, cloud modernization, systems engineering, or AI-enabled solutions.
• Strong understanding of Agile software development methodologies and systems engineering principles.
• Experience engaging directly with government customers and executive stakeholders.
• Excellent communication, presentation, and leadership skills.
• Ability to obtain and maintain a U.S. Government security clearance.

Preferred Qualifications

• Active Secret or Top Secret security clearance.
• Experience supporting technical proposals, capture efforts, and transition planning.
• Knowledge of MBSE, Digital Twins, Unity, Unreal Engine, or Modeling & Simulation frameworks.
• Experience with Azure, AWS, Kubernetes, containerization, and modern DevSecOps pipelines.
• Familiarity with AI/ML-enabled mission applications, data engineering, and advanced analytics.
• PMP, Agile, SAFe, or related professional certifications.

Why Join The One 23 Group?

At O23G, you'll work alongside highly accomplished professionals supporting some of the nation's most important missions. You'll have the opportunity to lead cutting-edge engineering initiatives, collaborate directly with government customers, and help shape the future of Digital Engineering across the federal marketplace. If you're passionate about solving complex technical challenges, mentoring engineering teams, and delivering mission-focused solutions that make an impact, we'd love to hear from you.