Full Stack Engineer - Sr (TS/SCI with Polygraph Required)

DeNOVO Solutions; Aurora (CO); On-site; USD 155,000 - 200,000; Full time

Benefits offered by this job

Competitive wages

Premium health coverage

401k with match

HRA

120 hours PTO

Company outings

Tuition reimbursement

HomeFundIt down payment match

Job summary

DeNOVO Solutions is seeking a Senior Full Stack Engineer to lead the design and delivery of scalable applications in Aurora, CO. You will architect backend services and APIs with Node/Express, design NiFi flows for data orchestration, and enforce comprehensive testing standards across the stack.

The role requires 10–15 years of experience, a TS/SCI clearance with Counter-Intelligence Polygraph, and hands-on expertise with MongoDB, NiFi, Vitest, Cypress, Playwright, Git, and CI pipelines.

Qualifications

• Ten to fifteen years of related professional experience on programs/contracts of similar scope.
• Bachelor’s degree or higher in computer science or related discipline; substitutions allowed.
• Master’s degree or PhD may substitute for years of experience as described.
• Clearance: TS/SCI with Counter-Intelligence Polygraph.

Responsibilities

• Lead design and development of scalable full-stack features.
• Architect backend services and API layers with Node/Express.
• Design robust NiFi flows for messaging and data orchestration.
• Establish and maintain test coverage using Vitest, Cypress, and Playwright.
• Drive code quality and enforce testing standards across the team.
• Mentor junior developers and review code for maintainability and performance.

Skills

MongoDB

NiFi

Vitest

Cypress

Playwright

Git

CI pipelines

Education

Bachelor’s degree in Computer Science or related discipline

Tools

Node.js

Express

Job description

When you join DeNOVO, you’re not just starting a job, you’re advancing a career within a community that values and supports you.

Position: Full Stack Engineer - Sr (TS/SCI with CI Poly Required)

Location: Aurora, CO

Job Id: BUCK-FSE3-001

# of Openings: 0

Clearance: TS/SCI with Counter-Intelligence Polygraph

Lead the Design and Delivery of Scalable Full-Stack Applications

DeNOVO Solutions is seeking a Full Stack Engineer – Senior to lead the design and development of scalable applications ensuring high performance and reliability across the full stack. This role architect’s backend services and APIs with Node/Express, designs advanced NiFi flows for data orchestration, and enforces comprehensive testing standards. The engineer mentors junior developers, drives code quality, and promotes best practices for maintainable and efficient software delivery.

Why You’ll Love This Role

• Shape the Architecture: Define scalable backend and API structures that drive mission success.
• Promote Excellence: Lead code reviews and testing standards to ensure performance and reliability.
• Mentor and Grow Talent: Guide junior engineers while improving team development processes.

Day in the Life

• Lead design and development of scalable full-stack features.
• Architect backend services and API layers with Node/Express.
• Design robust NiFi flows for messaging and data orchestration.
• Establish and maintain test coverage using Vitest, Cypress, and Playwright.
• Drive code quality and enforce testing standards across the team.
• Mentor junior developers and review code for maintainability and performance.

What You Bring to the Table

• Strong experience with MongoDB (aggregation and indexing).
• Expertise in NiFi (error handling, flow templates).
• Deep familiarity with testing tools: Vitest (unit/mocking), Cypress (component/UI), Playwright (E2E).
• Hands‑on experience with Git and CI pipelines (e.g., GitHub Actions).

What You Need

• Experience: Ten (10) to fifteen (15) years of related professional experience supporting programs and contracts of similar scope, type, and complexity.
• Education: Bachelor’s degree or higher in a computer science or related discipline (e.g., Statistics, Mathematics, Programming, or Systems Engineering). In lieu of a Bachelor’s degree, two (2) additional years of related experience may be substituted.
• Substitution of Experience: A Master’s degree from an accredited college or university in a related engineering discipline (e.g., Statistics, Mathematics, Operations Research, Cyber Security, Engineering or Computer Science) may be substituted for two (2) years of experience. A PhD from an accredited college or university in a related engineering discipline may be substituted for four (4) years of experience.
• Clearance: TS/SCI with Counter-Intelligence Polygraph.

Our Benefits Package

Our benefits package for full‑time employees includes:

• Competitive Wages – This position’s annualized pay range is $155,000.00 to $200,000.00
• Medical, Dental, and Vision Premiums 100% Employer Paid for you and your legal dependents or plus‑up, cost‑split plan.
• DeNOVO Paid Health Reimbursement Account (HRA)
• 401k with 6% Match
• 120 hours of Paid Time Off (PTO)
• Company Outings and Trips
• Tuition Reimbursement, Skillset Training, and New/Renewed Certification assistance
• HomeFundIt Company Down Payment Match – Employer match towards the down payment of buying a new home

DeNOVO Solutions is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, disability, marital status, veteran status, sexual orientation, genetic information or any other protected characteristic under applicable law.