---
title: 'Full Stack Engineer at LIGHTFEATHER IO LLC'
canonical: 'https://feeny.ai/job/full-stack-engineer-lightfeather-io-llc-united-states-vnwe11b43201'
type: 'job'
last_seen: '2026-09-07'
---

# Full Stack Engineer at LIGHTFEATHER IO LLC

- **Company:** LIGHTFEATHER IO LLC
- **Location:** United States
- **Posted:** 2026-09-04
- **Last confirmed live:** 2026-09-07
- **Apply:** https://job-boards.greenhouse.io/lightfeatheriollc/jobs/5417043008

## Job description

LightFeather is seeking a Senior Full Stack Engineer to support a federal government client in modernizing critical mission systems. You will own full stack delivery with a focus on translating complex legacy system behavior into clean, scalable software.

The current environment includes large legacy systems managing operational workflows such as processing, tracking, and encounter management. These systems carry layers of business rules, manual processes, and tightly coupled functionality. The core challenge is understanding how they work in practice, identifying mission-critical functionality, and translating it into a modern platform-based architecture. The client is adopting Palantir as the target modernization platform. This is a Full Time, Remote Position.

- Location: Fully Remote (EST hours)
- Job Type: Full-time
- Salary: $90,000–$115,000 annually, based on experience level.
- Clearance Requirement: U.S. citizenship is required for this position due to federal contract requirements and the need to obtain and maintain a Public Trust.

Responsibilities:

- Design, develop, and maintain full stack applications supporting modernization of systems.
- Analyze legacy systems and workflows to identify core functionality vs. unnecessary process overhead.
- Translate operational requirements into scalable, modern application designs.
- Develop backend services, APIs, and integration layers connecting legacy environments to modern platforms.
- Build and enhance user-facing components using modern front-end technologies.
- Support the full SDLC: analysis, design, development, testing, deployment, and maintenance.
- Troubleshoot issues across application, integration, and data layers.
- Collaborate with stakeholders to clarify requirements and improve system behavior.
- Participate in code reviews and uphold engineering best practices.

Required Qualifications and Skills:

- U.S. Citizenship is required with the ability to obtain and maintain a Public Trust clearance.
- Bachelor's degree in Computer Science or related field (or equivalent experience).
- 7+ years of hands-on full stack software development experience.
- Experience working in complex or enterprise system environments.
- Strong experience with Java and frameworks such as Spring Boot.
- Experience designing and implementing RESTful APIs.
- Experience with front-end technologies including JavaScript, React, HTML, and CSS.
- Experience working with relational databases and data access patterns.
- Ability to troubleshoot across multiple layers of an application stack.
- Experience working in Agile or iterative delivery environments.
- Ability to analyze and simplify complex systems and workflows.
- Strong systems thinking and problem-framing capability.
- Comfort working in ambiguous, poorly documented environments.
- Ability to distinguish between essential functionality and legacy process bloat.
- Strong ownership mindset and accountability for outcomes.
- Effective communication with both technical and non-technical stakeholders.
- High learning agility and willingness to adopt new platforms and tools.

Preferred:

- Experience with legacy system modernization or transformation efforts.
- Experience supporting federal or mission-driven environments.
- Exposure to enterprise data platforms or large-scale system integrations.
- Experience working in environments where requirements must be derived from real-world usage rather than formal documentation.

Why Join LightFeather?

At LightFeather, you're not just taking a job — you're joining a purpose-driven team that delivers innovative, mission-critical solutions to make a real difference. You'll work on diverse, meaningful projects that challenge and inspire you, alongside some of the best minds in the industry.

LightFeather is an Equal Opportunity Employer. We consider all qualified applicants for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, disability, veteran status, genetic information, or any other status protected by applicable federal, state, or local law.

## About LIGHTFEATHER IO LLC

## Company Overview
- **One-liner**: LightFeather is a mission-driven, woman- and service-disabled veteran-owned small business that modernizes federal legacy systems with cloud-native, AI/ML, and DevSecOps solutions.
- **Entity Type**: Private (small business; no disclosed funding rounds)
- **Headquarters**: Arlington, Virginia, United States
- **Founded**: 2018
- **Founders**: Sarah Fahden (Founder & CEO)

## Core Business
- **Primary industries**: Information Technology & Services, Federal Government IT, Cybersecurity, Cloud Computing, Artificial Intelligence / Machine Learning
- **Target customers**: B2G – U.S. federal agencies (DOJ, DHS, USCIS, IRS, DoS, PBGC)
- **Mission/Purpose**: “Delivering high-impact solutions across federal agencies” by combining technical expertise, operational excellence, and forward-leaning leadership to support complex modernization and transformation goals.

## Products & Services
LightFeather delivers professional services rather than packaged products. Its core capabilities are offered as service lines:

- **DevSecOps & System Modernization**: Secure, scalable DevSecOps pipelines, cloud migration, and modernization of legacy applications in environments up to Top Secret.
- **Cloud Engineering**: Architecture, migration, and operations across multi-cloud (GCP, Azure, AWS) with Infrastructure as Code.
- **Cybersecurity**: Continuous monitoring, SOC operations, Risk Management Framework (RMF), security control assessments, penetration testing, FISMA compliance, and ATO support.
- **Data Engineering & Business Intelligence**: Design and maintenance of robust data infrastructures (Databricks, Looker/Tableau modernizations), ensuring reliable, scalable data collection, storage, and processing.
- **Data Science (AI/ML & RPA)**: Machine learning, generative AI, behavioral forecasting, anomaly detection, identity resolution, biometric verification, and robotic process automation – including MLOps for production deployment.
- **UI/UX Design**: Human-centered design and human-centered design for federal applications.
- **Business Operations Support**: Operational analytics, Agile/SAFe delivery, and documentation with security and audit trail requirements.

## Market Standing
- **Valuation/Market Cap**: Not publicly available (private company).
- **Key Metric**: Total headcount of 28 employees (LinkedIn, 2025) and 19 active job postings representing 375% monthly growth in openings.
- **Notable Certifications**: Woman-Owned Small Business (WOSB), Service-Disabled Veteran-Owned Small Business (SDVOSB), Veteran-Owned Small Business (VOSB) – enabling federal set-aside contracts.
- **Growth Signals**: LinkedIn followers grew 382.9% year-over-year to 6,944; job postings increased 171.4% year-over-year.

## Competitive Advantages
- Deep specialization in federal contracting with security clearance support (up to Top Secret).
- Small, agile team of senior engineers who operate with the discipline of federal compliance (RMF, ATO, FISMA).
- Certification status (WOSB/SDVOSB) provides preferential access to government contracts.
- Proven track record on high-impact projects: ML models trained on 600M+ federal records, real-time analytics on Databricks, and full-lifecycle modernization at DOJ, DHS, IRS, and other agencies.
- Modern technology stack (AI/ML, cloud-native, Databricks, ServiceNow, Unqork, Tableau) paired with veteran delivery experience.

## Strategic Focus
- Continue modernizing legacy federal applications using AI and cloud-native approaches.
- Expand DevSecOps, cloud engineering, and cybersecurity services across additional agencies.
- Strengthen capabilities in generative AI, MLOps, and multi-cloud operations while maintaining rigorous compliance.
- Grow the team strategically (19 open positions) to meet increasing demand from federal partners.

## Why Work Here
- **Culture**: Described as “fun, flexibility, and purpose” – a team of curious, creative people who care about meaningful work and each other.
- **Remote/Hybrid**: Remote-first company; encourages team members to work from the office less and reduce carbon footprint.
- **Growth**: Rapidly expanding (375% monthly hiring increase) with opportunities to work on cutting-edge federal AI/ML and cloud projects.
- **Engineering Culture**: Senior, deeply technical engineers who pair modern capabilities with federal delivery discipline. Exposure to full-lifecycle development, high-security environments, and mission-critical systems.
- **Benefits**: Not explicitly detailed in search results, but company emphasizes family-friendly policies and “get stuff done” autonomy.

## Sources
1. [lightfeather.io](https://lightfeather.io/) – Company homepage with service descriptions, mission, and certifications.
2. [linkedin.com](https://www.linkedin.com/company/lightfeather-io) – LinkedIn company page with headcount, growth rates, employee breakdown, and updates.
3. [job-boards.greenhouse.io](http://job-boards.greenhouse.io/lightfeatheriollc) – Greenhouse career site with 19 open positions.

## Other roles at LIGHTFEATHER IO LLC

- [ServiceNow Business Analyst](https://feeny.ai/job/servicenow-business-analyst-lightfeather-io-llc-united-states-5p3e614de225) — United States
- [ServiceNow Platform Engineer](https://feeny.ai/job/servicenow-platform-engineer-lightfeather-io-llc-washington-1qk09fbp4gyb) — Washington, DC
- [Senior ServiceNow Developer - Public Trust Clearance](https://feeny.ai/job/senior-servicenow-developer-public-trust-clearance-lightfeather-io-llc-united-86kf7hdh6y2r) — United States
- [Lead ServiceNow Developer](https://feeny.ai/job/lead-servicenow-developer-lightfeather-io-llc-united-states-xqr98wf4jss4) — United States
- [GCP Cloud/DevOps Engineer](https://feeny.ai/job/gcp-cloud-devops-engineer-lightfeather-io-llc-washington-eymej8f0nmkz) — Washington, DC
- [Senior Azure Cloud Engineer](https://feeny.ai/job/senior-azure-cloud-engineer-lightfeather-io-llc-washington-htzqv6evx04x) — Washington, DC
- [ServiceNow CMDB Engineer](https://feeny.ai/job/servicenow-cmdb-engineer-lightfeather-io-llc-washington-w2xqq06x7tkn) — Washington, DC
- [Senior ServiceNow Developer](https://feeny.ai/job/senior-servicenow-developer-lightfeather-io-llc-united-states-r0kvfxv6606j) — United States
- [Azure Cloud/DevOps Engineer](https://feeny.ai/job/azure-cloud-devops-engineer-lightfeather-io-llc-washington-5mrnf4b63d0n) — Washington, DC
- [Full Stack Engineer](https://feeny.ai/job/full-stack-engineer-capital-technology-group-united-states-cq5y35dekfca) — United States