Full-Time
Principal Legacy Systems Engineer
Posted on 9/5/2025
Tria Federal
1,001-5,000 employees
End-to-end digital transformation for federal agencies
No salary listed
Lexington, MA, USA
Hybrid
Hybrid work arrangement requires in-office presence at Hanscom AFB.
US Top Secret Clearance Required
 Software Engineering (2) |
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- B.S Degree
- Relevant experience developing and sustaining AFMSTT and/or C2SET systems, models, and interfaces
- Expertise with cloud-based services (AWS, Azure) and RESTful architectures.
- 2+ years of experience in military mission planning, operations, and wargaming.
- 2+ years of experience in simulation training with Air Operations Centers (AOCs)
- Document and transfer knowledge of legacy systems, interfaces, and sustainment processes
- Support Government and contractor teams during transition-in and transition-out phases.
- Ensure operational sustainment of all legacy AFMSTT and C2SET training, simulation, and stimulation systems.
- Manage configuration changes, defect reports (CR/DR), urgent exercise-driven changes, and fielding updates.
- Maintain legacy code, algorithms, and interfaces, ensuring interoperability with Air, Space, and Cyber Constructive Environment (ASCCE) federations.
- Architect and support integration of legacy systems into ongoing federations and training environments.
- Lead design efforts for legacy ASCCE and federation fielding to ensure continuity of training support.
- Provide engineering support for transition of legacy attributes to modernized systems.
- Provide direct technical support to exercises, events, and operational sustainment tasks.
- Coordinate with modernization and DevOps leads to ensure smooth knowledge transfer and migration of legacy systems.
- Maintain accuracy, realism, and training currency of legacy models to support operational readiness.
- Act as the bridge between legacy sustainment and modernization engineering teams.
- Familiarity with Air Force Constructive Federations (JLVC, JLCCTC, BLCSE)
- Knowledge of legacy modeling engines (AWSIM, ABS) and their integration with AOC Weapon Systems.
- Experience in software sustainment, defect tracking, and rapid fielding in support of urgent exercise requirements.
- Advanced degree in Computer Science, Engineering, or related discipline.
Tria Federal provides end-to-end digital transformation for federal health and public safety agencies by pairing advisory services with hands-on technical execution. The company offers five service lines—results management, integrated health optimization, next-generation analytics, financial transformation, and digital modernization—supported by AI, cloud engineering, agile development, and data analytics. It differentiates itself with an integrated, government-focused delivery model built from the merger of F|A|P, FTC, UCS and the Softrams acquisition, plus Sagewind Capital backing to enable rapid modernization and human-centered design. Its goal is to improve efficiency, transparency, and outcomes for federal clients by delivering practical, scalable technology and process changes.
Company Size
1,001-5,000
Company Stage
N/A
Total Funding
N/A
Headquarters
Arlington, Virginia
Founded
2021
Simplify's Take
What believers are saying
- $174M VA recompete contract won in 2025 expands software engineering.
- Tria Forge AI platform launched September 2025 accelerates federal deployments.
- Sean Vineyard promoted SVP Growth Operations early 2026 drives captures.
What critics are saying
- Guidehouse undercuts Tria's public safety contracts using DHS scale.
- Softrams cultural clashes cause talent exodus within 6-12 months.
- Deloitte erodes CMS share with superior AI in 18-36 months.
What makes Tria Federal unique
- Tria Federal merges advisory with technical execution across five service lines.
- Softrams acquisition in November 2024 boosts CMS human-centered design.
- Tria Labs launched August 2024 prototypes AI and cybersecurity solutions.
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Benefits
Health Insurance
Mental Health Support
Wellness Program
Flexible Work Hours
Remote Work Options
Professional Development Budget
Growth & Insights and Company News
6 month growth
↓ -1%1 year growth
↓ -1%2 year growth
↑ 0%Tria Federal appoints Sean Vineyard as growth operations SVP. Sean Vineyard has assumed new responsibilities as senior vice president of growth operations at Tria Federal. The Arlington, Virginia, company said in a LinkedIn post Wednesday that Vineyard will lead efforts to drive enterprise business development and execute its capture and growth strategy. "I'm excited for the opportunity to deliver mission-driven digital solutions that produce clear, measurable ROI for our federal health and public safety partners," Vineyard stated. "With the outstanding team we have at Tria, I'm confident we will redefine what mission performance looks like across the federal landscape." Government leaders will take the stage at the Potomac Officers Club's 2026 Digital Transformation Summit on April 22 to provide updates on modernization initiatives across various agencies and talk to industry about capabilities the government still needs to transform outdated legacy systems. Sign up today to secure your spot. Who is Sean Vineyard? Vineyard most recently served as Tria's vice president of business development, a role he has held since June 2025. He also held the role of vice president of business development for military and veteran health. The executive also previously led as vice president at Federal Advisory Partners, which acquired Favor TechConsulting and Universal Consulting Services in 2022 and transformed into Tria Federal in March 2023. "Sean has consistently advanced Tria's growth strategy while strengthening customer success," commented Tria President Atchut Kanthamani. "In his new role, Sean will continue to raise the bar for excellence in delivering [artificial intelligence]-enabled digital services and technology solutions that keep Americans healthy and safe. We are confident in his leadership and excited for what's ahead." Vineyard was a partner and managing director at 11th Hour Service and held roles at Kearney & Company and Deloitte earlier in his career. What is Tria Federal? Tria Federal is a government services provider specializing in federal IT transformation, digital services and AI capabilities. One of its offerings is Tria Forge, a generative AI platform launched in September to help organizations develop and deploy AI tools. In October, the company joined the ServiceNow Partner Program to support agency digital modernization through AI-driven workflow automation and enterprise platform delivery.
Tria Federal has announced the launch of Tria Forge, a serverless generative artificial intelligence platform designed to help organizations develop and deploy AI tools.
ARLINGTON, Va., Aug. 19, 2025 (GLOBE NEWSWIRE) - Tria Federal (Tria) has promoted Murali Mallina to be the company's new Chief Technology Officer (CTO).
Digital services provider Tria Federal has won a five-year, $174 million recompete contract from the Department of Veterans Affairs to provide expanded software engineering and development support services for VA's Financial Services Center, or FSC.
Tria Federal executive Sean Vineyard has announced on LinkedIn his appointment as the company's vice president of business development.