---
title: 'Full Stack Software Engineer, Level II at Seneca Holdings'
canonical: 'https://feeny.ai/job/full-stack-software-engineer-level-ii-seneca-holdings-remote-ct4q8a95zyms'
type: 'job'
last_seen: '2026-09-11'
---

# Full Stack Software Engineer, Level II at Seneca Holdings

- **Company:** Seneca Holdings
- **Location:** Remote
- **Work type:** remote
- **Posted:** 2026-09-01
- **Last confirmed live:** 2026-09-11
- **Apply:** https://senecaholdings.com/jobs/?gh_jid=4724365005

## Job description

Clear Creek Federal is part of the Seneca Nation Group (SNG) portfolio of companies. SNG is Seneca Holdings' federal government contracting business that meets mission-critical needs of federal civilian, defense, and intelligence community customers. Our portfolio comprises multiple subsidiaries that participate in the Small Business Administration 8(a) program. To learn more about SNG, visit [the website](https://senecanationgroup.com/) and follow us on [LinkedIn](https://www.linkedin.com/company/seneca-holdings-llc/).

Our team of talented individuals is what makes us successful. To support our team, we provide a balanced mix of benefits and programs. Your total rewards package includes competitive pay, benefits, and perks, flexible work-life balance, professional development opportunities, and performance and recognition programs. We offer a comprehensive benefits package that includes medical, dental, vision, life, and disability, voluntary benefit programs (critical illness, hospital, and accident), health savings and flexible spending accounts, and retirement 401K plan. One of our fundamental principles is to offer competitive health and welfare benefits to our team members, providing coverage and care for you and your family. Full-time employees working at least 30 hours a week on a regular basis are eligible to participate in our benefits and paid leave programs.  We pride ourselves on our collaborative work environment and culture, which embraces our mission of providing financial and non-financial benefits back to the members of the Seneca Nation.

## About the Program

The U.S. Army Communications-Electronics Command (CECOM) Software Engineering Center, Intelligence Electromagnetic Warfare and Sensors (IEW&S) Directorate, operates the Army Reprogramming Analysis Team (ARAT) at Aberdeen Proving Ground. ARAT builds, tests, and distributes mission software for fielded electromagnetic warfare systems, including the AN/APR-39 radar warning receiver family, the AN/APR-48A/B Modernized Radar Frequency Interferometer, the Aircraft Gateway Processor on the AH-64, and the AN/VLQ-12 CREW Duke. ARAT targets its mission software products to 14 geographic areas of responsibility across six combatant commands.

The ARAT Innovation Initiatives effort modernizes that infrastructure: browser-based threat modeling in the Signal Modeling Framework, automated RF hardware-in-the-loop testing through the Unified Test Automation Suite and software-defined radios, an automated Air/Terrestrial Testbed, test data warehousing, automated mission data product generation, and the ASPEN software distribution portal across NIPR, SIPR, and JWICS. Work is executed in Agile sprints with DevSecOps practices in a Government-approved GitLab environment.

Position Summary

The Level II Software Engineer independently designs and delivers software features across the client's existing products. The role owns end-to-end delivery of assigned GitLab milestones, integrating TCP/IP communication among SDRs, Keysight UXGs, UTAS server/client, M&S server/client, and CATS/UMCATS rack components into the TestNet enterprise. It provides technical support for integrated system evaluation, interface upgrades, sustainment, and issue resolution. The software engineering is defined full stack (C#, .Net, Python, Angular, SQL Server, Postgres) and the role also builds Section 508 compliant browser-based user interfaces required such as a threat-simulation builder, a test setup and analysis interface, and the software delivery portal.

Responsibilities include, but are not limited to:

- Independently design and deliver software features across the client's products under owning assigned GitLab milestones end to end.
- Integrate TCP/IP communication among software-defined radios, Keysight UXGs, UTAS server and client, modeling and simulation server and client, and CATS and UMCATS rack components into the TestNet enterprise.
- Build the browser-based user interfaces required by covering the threat-simulation builder, the test setup and analysis interface, and the software delivery portal, and deliver them Section 508 conformant.
- Provide technical support for integrated system evaluation, interface upgrades, sustainment, and issue resolution.
- Travel to Aberdeen Proving Ground at the end of a project to install, configure and test software in the client's laboratory to gain client acceptance of deliverables.
- Track hours across multiple projects (5-12 annually) to ensure accurate cost accounting for monthly reports.
- Assist Project Manager and client with accurate and reasonable estimates on level of effort for planned software projects.
- Architect solutions using as much open source software as possible to increase the client's mission capabilities and the team's DevSecOps and software delivery capabilities.
- Build data pipelines and warehouses on very large datasets that support analytic visualizations and key mission metrics.
- Build an anchored and factual chat assistant using open source LLMs and design for on-premise model hosting and inference.
- Build software that creates, processes and deploys threat signals defined in SMF and transform those definitions into vendor specific file types for testing across hardware devices.

Required Qualifications

- Bachelor's degree in engineering, computer science, or a related technical discipline.
- 4 to 8 years of relevant professional experience in software engineering.
- Active DoD Secret clearance at time of application.
- Position-specific training beyond the common set: IA baseline certification (8570 IAT II equivalent) where the engineer holds privileged access to the DEVNET or the classified lab.
- Ability to work on-site at Aberdeen Proving Ground, Maryland on a hybrid schedule, with on-site presence required for classified and laboratory work.

## Preferred Qualifications

- CompTIA Security+ CE.
- Certified Scrum Developer.
- AWS Certified Developer - Associate.
- IAAP CPACC or DHS Trusted Tester (front-end scope).
- Experience building instrument control interfaces over TCP/IP, particularly Keysight or National Instruments hardware.
- Front-end delivery experience in Angular against a Section 508 or WCAG 2.1 AA standard.
- Experience with electronic warfare, software defined radios, electromagnetic spectrum.
- Experience with data warehousing, data pipelines and data science.

Technical Skills and Tools

C#, or Python development; Agile/Scrum delivery; GitLab CI/CD pipelines; REST API design; unit and integration testing; STIG-compliant secure coding; Windows Army Gold Master (AGM) target environment; software installation package assembly (source, executables, Build Version Description, Help); System User's Manual authoring; TCP/IP instrument integration; SDR and Keysight UXG control interfaces; code review and mentoring; front-end development in a modern JavaScript framework (Angular); HTML5/CSS3 and responsive browser-based UI construction; data visualization for RF and scenario data; Section 508 / WCAG 2.1 AA conformance; usability testing.

Security and Training Requirements

- An active DoD clearance at the level shown above is required. Secret is the floor across this contract.
- A signed non-disclosure agreement is required before start of performance.
- Common Access Card issuance runs approximately 24 hours; full network and facility access typically takes three to four business days after in-processing.
- Every position carries the universal DoD and Army training set, completed at start of performance and refreshed on the Army cycle: DoD Cyber Awareness Challenge, Threat Awareness and Reporting Program (TARP), annual security refresher, insider threat awareness, controlled unclassified information handling, Antiterrorism Level I, iWATCH briefing, ATCTS registration, and installation access processing.

Equal Opportunity Statement: Seneca Holdings provides equal employment opportunities to all employees and applicants without regard to race, color, religion, sex/gender, sexual orientation, national origin, age, disability, marital status, genetic information and/or predisposing genetic characteristics, victim of domestic violence status, veteran status, or other protected class status. This policy applies to all terms and conditions of employment, including, but not limited to, hiring, placement, promotion, termination, layoff, recall, transfer, leave of absence, compensation and training. The Company also prohibits retaliation against any employee who exercises his or her rights under applicable anti-discrimination laws. Notwithstanding the foregoing, the Company does give hiring preference to Seneca or Native individuals. Veterans with expertise in these areas are highly encouraged to apply.

## About Seneca Holdings

## Company Overview
- **One-liner**: Seneca Holdings is the investment arm of the Seneca Nation, a federally recognized American Indian Tribe, that builds and manages a diversified portfolio of businesses to generate long-term economic self-sufficiency for the Nation.
- **Entity Type**: Private (wholly owned by the Seneca Nation, not VC-backed)
- **Headquarters**: Buffalo, New York, USA
- **Founded**: 2009
- **Founders**: Formed by the Seneca Nation; founding leadership not individually named

## Core Business
- **Primary industries**: Diversified holding company with businesses in federal government contracting, environmental solutions, corporate/leisure travel management, and sports & entertainment.
- **Target customers**: B2G (federal government agencies), B2B (commercial clients), and B2C (travel and sports fans).
- **Mission statement**: “To build a portfolio of profitable businesses that delivers long-term, sustained income and economic self-sufficiency to the Seneca Nation.”

## Products & Services
- **Seneca Nation Group (SNG)**: Federal government contracting services (IT, cybersecurity, professional services, facilities management). SNG holds a CMMC 2.0 Level 2 certification.
- **Seneca Environmental**: Environmental remediation, sustainability, and “Earth healing” energy alternatives.
- **CI Azumano Travel**: Corporate travel management, government travel, and leisure travel services.
- **Rochester Knighthawks**: Professional lacrosse team (National Lacrosse League).
- **Fiber Broadband Network**: In partnership with Seneca Energy, a high-speed fiber network serving homes and businesses on the Cattaraugus Territory of the Seneca Nation.

## Market Standing
- **Valuation**: Not publicly disclosed (private, tribally owned)
- **Key Metrics**:
  - Over 1,300 team members across the U.S. and internationally (as of 2025)
  - 8+ portfolio companies
  - CMMC 2.0 Level 2 certification (DoD cybersecurity standard)
- **Notable Investors/Partners**: Wholly owned by the Seneca Nation; no external investors. Partners include the U.S. Department of Defense (via SNG) and Seneca Energy.
- **Growth Signals**:
  - Expanded into fiber broadband infrastructure on tribal territories
  - Achieved CMMC certification, enabling deeper federal contracting
  - Continued diversification into environmental and travel sectors
  - Active recruitment with over 1,300 employees, indicating steady growth

## Competitive Advantages
- **Unique tribal status**: As a Native-owned entity, Seneca Holdings benefits from federal government contracting preferences (e.g., 8(a) program eligibility), enhanced financing options, and tax immunity.
- **Seventh Generation Principle**: Long-term decision-making focused on sustainability and positive impact for seven generations, differentiating from short-term profit-driven firms.
- **Diversified portfolio**: Spread across government, environmental, travel, and sports reduces risk and creates cross-sector synergies.
- **Deep cultural connection**: Strong ties to the Seneca Nation provide a stable, mission-driven ownership structure.

## Strategic Focus
- **Portfolio diversification**: Continue acquiring and building businesses across non-gaming sectors to reduce reliance on any single revenue stream.
- **Federal market expansion**: Leverage CMMC certification and tribal preferences to win more DoD and civilian agency contracts.
- **Infrastructure investment**: Expand the fiber broadband network to additional tribal territories and potentially beyond.
- **Talent development**: Partner with on-territory programs to train and hire Seneca Nation members, building a pipeline of future leaders.

## Why Work Here
- **Purpose-driven mission**: Every role contributes to the economic self-sufficiency of the Seneca Nation and future generations.
- **Culture**: Collaborative, values-driven (Quality, Teamwork, Integrity, Professionalism, Connection), with a strong emphasis on respect and community.
- **Benefits**: Comprehensive package including affordable medical/dental/vision, HSA with employer contributions, 401K with immediate vesting and match, generous PTO and 11 paid holidays, wellness program, professional development reimbursement, and employee rewards program.
- **Work environment**: Hybrid/office policy not explicitly stated; roles span across the U.S. with some remote possibilities. The culture emphasizes teamwork and connection.
- **Veteran-friendly**: Virginia Values Veterans (V3) certified, actively seeks veteran talent.
- **Growth opportunities**: Professional development reimbursement, internships for Seneca students, and a commitment to promoting from within.
- **Note on scams**: The company has issued a warning about recruitment scams; applicants should only apply through the official careers page (senecaholdings.com/careers).

## Sources
1. [Seneca Holdings – Official Website](https://senecaholdings.com/)
2. [Seneca Holdings – About Us](https://senecaholdings.com/about-us/)
3. [Seneca Holdings – Careers](https://senecaholdings.com/careers/)
4. [Seneca Holdings – Jobs](https://senecaholdings.com/jobs/)
5. [Seneca Holdings – Leadership](https://senecaholdings.com/leadership/)

## Other roles at Seneca Holdings

- [IT Systems SME](https://feeny.ai/job/it-systems-sme-seneca-holdings-arlington-f1fpxvztp691) — Arlington, VA
- [Jr Graphic Designer](https://feeny.ai/job/jr-graphic-designer-seneca-holdings-remote-dg3p8k8p5kz3)
- [Electronic Warfare (EW) Specialist, Level III](https://feeny.ai/job/electronic-warfare-ew-specialist-level-iii-seneca-holdings-remote-929s2w1s9pem)
- [Senior Education Coordinator](https://feeny.ai/job/senior-education-coordinator-seneca-holdings-monterey-4v2t1ygcqsnc) — Monterey, CA
- [Lead Electrical Technician](https://feeny.ai/job/lead-electrical-technician-seneca-holdings-chantilly-0b2r22fg4p1r) — Chantilly, VA
- [Electrical Technician](https://feeny.ai/job/electrical-technician-seneca-holdings-chantilly-gjkm6xnshq8r) — Chantilly, VA
- [Team Lead](https://feeny.ai/job/team-lead-seneca-holdings-arlington-5hp86982wjwd) — Arlington, VA
- [Human Resources Specialist](https://feeny.ai/job/human-resources-specialist-seneca-holdings-dayton-psw0dj4an3bc) — Dayton, OH
- [Human Resources Specialist (Part-Time)](https://feeny.ai/job/human-resources-specialist-part-time-seneca-holdings-dayton-z0nrmg955ghg) — Dayton, OH
- [Contract Special Security Officer (CSSO)](https://feeny.ai/job/contract-special-security-officer-csso-seneca-holdings-charleston-bgs5s7e6f37v) — Charleston, SC