Senior Developer

Kids for the Future; Foster (VA); Hybrid; USD 150,000 - 210,000; Full time

Job summary

NexTech Solutions in Northern Virginia is seeking a Senior Developer to design, develop, test and maintain production capabilities of Stronghold, a secure AI-enabled SaaS platform. You will help build cloud-based applications and lead on-site technical efforts.

The ideal candidate has 10+ years of software experience, including TypeScript and Node, with expertise in lexical and vector search, secure environments, and mentoring junior engineers in fast-paced teams.

Qualifications

• 10+ years of relevant experience.
• 5+ years in software development, search engineering, or related discipline.
• Experience with TypeScript and Node.
• Understanding of lexical search, vector search, semantic search, metadata filtering, and hybrid retrieval.
• Experience working in secure or restricted environments.
• Strong troubleshooting, communication, and stakeholder management skills.

Responsibilities

• Design, develop, test and maintain production capabilities across the Stronghold platform.
• Design and implement AI-enabled capabilities including RAG, information extraction, search, report generation and agentic-driven workflows.
• Develop modern web application functionality across front-end/back-end and supporting services.
• Review code and designs, providing feedback focused on security, maintainability and simplicity.
• Mentor junior engineers and act as the on-site technical authority.

Skills

10+ years experience

5+ years experience in software dev /

Education

Bachelor’s degree or equivalent

Tools

OpenSearch/Elasticsearch

Microsoft Graph/SharePoint/OneDrive

Azure storage

Security features

Job description

• Location Northern Virginia,Northern, VA, 23128,United States
• Employee Type FT Exempt
• Travel 10%

The Opportunity (General Summary)

NTS is seeking a Senior Developer to design, develop, test and maintain production capabilities of Stronghold, a secure AI-enabled SaaS platform. The ideal candidate has experience building modern cloud applications and AI-enabled systems as part of high-performance teams. In this role you will ensure system reliability, drive automation, maintain compliance, and act as the on-site technical lead.

Key Responsibilities (Principal Duties and Accountabilities *Essential Functions)

• Design, develop, test and maintain production capabilities across the Stronghold platform
• Design and implement AI-enabled capabilities including RAG, information extraction, search, report generation and agentic-driven workflows
• Develop modern web application functionality across front-end/back-end and supporting services
• Review code and technical designs from other developers providing actionable feedback focused on security, maintainability and simplicity
• Mentor junior engineers and act as the on-site technical authority

Education

• Bachelor’s degree or equivalent

Required Skills, Experience & Abilities

• 10+ years of relevant experience
• 5+ years progressive relevant experience in software development, search engineering, or related discipline
• Experience with TypeScript and Node
• Understanding of lexical search, vector search, semantic search, metadata filtering, and hybrid retrieval.
• Experience working in secure or restricted environments
• Strong troubleshooting, communication, and stakeholder management skills

Preferred Qualifications

• Experience working with the Department of State
• Experience with OpenSearch vector search, ingest pipelines, index state management, aliases snapshots, and security features.
• Hands-on experience developing and operating solutions using OpenSearch, Elasticsearch, or a comparable search platform.
• Experience with document extraction technologies for PDF, Office, email, html, audio, video, or scanned content.
• Experience integrating with Microsoft Graph, SharePoint, OneDrive, Azure Blob Storage, network file shares, API

Physical Demands & Work Environment

The physical demands and work environment described are representative of those that an employee encounters while performing the essential functions of this job. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

• Ability to sit, stand, and walk for extended periods; frequent use of hands for typing.
• Comfort operating independently across multiple customer sites; flexibility to travel up to 10%
• Comfort working in lab/workshop settings with noise, temperature changes, with rotating personnel.
• Work is performed primarily in a collaboration environment with moderate to high noise levels (multiple users, audio/video calls, co-location with related teams).
• Work occurs across lab, office, and occasional field/test environments, with conditions varying by task and event requirements.
• The environment is fast-paced and deadline-driven, requiring adaptability and responsiveness to shifting priorities.
• Support may occasionally require schedule adjustments outside normal business hours to accommodate test events, customer timelines, or mission needs.

Summary

• This is a hybrid position based in either Northern, VA or Washington, DC

Compensation:

The base salary range for this position is $150,000-$210,000

Actual compensation will be determined based on factors including relevant experience, qualifications, skills, location, and internal equity.

NexTech Solutions offers a comprehensive benefits package designed to support employees and their families, including competitive health, dental, and vision coverage, retirement savings options, paid time off, and additional employee benefits.

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. NTS will also consider qualified applicants with criminal histories consistent with relevant laws for employment.