Principal Engineer / Technical Lead

Aretec, Inc.; United States; Hybrid; USD 150,000 - 210,000; Full time

Benefits offered by this job

Health, Dental, and Vision Insurance

401(k) Plan with Employer Match

Certification Stipends

Professional Development Opportunities

Flexible Work Arrangements (remote as契

Job summary

Aretec, Inc. is seeking a hands-on Principal Engineer / Technical Lead to guide the architecture and implementation of an AI Solution within the Enterprise Search team.

You will make critical design decisions, write production code, lead integrations, review code, and manage technical risk across the application and AI stack. The role requires strong Python skills, experience with LLM architectures, and the ability to mentor engineers within an established multidisciplinary team.

Qualifications

• Deep hands-on software engineering across backend services, APIs and modern web apps.
• Proven success leading architecture and complex enterprise or mission-critical systems.
• Strong Python skills and hands-on AI/LLM architecture experience.
• Experience with RAG, retrieval systems, agent orchestration, prompts and guardrails.
• Strong system-integration, data-flow, testing, code-review and risk management.
• Ability to explain decisions and tradeoffs to engineers and stakeholders.
• Ability to work effectively within an existing multidisciplinary delivery team.

Responsibilities

• Own the overall technical architecture for AI Solution, including application, integration, data, and AI design decisions.
• Provide hands-on technical leadership while designing, implementing, testing, and reviewing production code.
• Lead complex integrations with Client, enterprise data platforms, authentication services, and APIs.
• Define scalable patterns for LLM integration, retrieval, agent orchestration, source traceability, evaluation, and guardrails.
• Translate objectives into an executable engineering roadmap, sequencing work by value, complexity, cost, access and risk.
• Set engineering standards for security, reliability, maintainability, observability, documentation, and automated testing.
• Identify architectural and delivery risks early; mitigate and communicate tradeoffs to stakeholders.
• Mentor engineers, facilitate design reviews, and resolve cross-stack issues while staying close to implementation.
• Partner with federal stakeholders and Client to ensure outputs support, not replace, human judgment.

Skills

Python

LLM architecture

Backend APIs

System integration

Technical leadership

Security & risk

Communication

Job description

Us

At Aretec, Inc., we are catalysts for change within the federal government landscape. Specializing in advanced analytics, machine learning, data analysis, cybersecurity, and business optimization, we empower federal agencies to achieve their most critical missions. As a premier partner and prime vendor, we deliver innovative, high-impact solutions that address complex challenges and drive national progress. Our commitment to excellence and innovation positions us at the forefront of transforming governmental operations, enhancing efficiency, and making a lasting difference in the lives of citizens.

You

You are a thoughtful, collaborative technology professional who turns complex challenges into practical, secure, and maintainable solutions. You work comfortably with engineers, product stakeholders, and federal partners; communicate clearly; and balance delivery speed with quality, traceability, and responsible use of AI. You are energized by mission-driven work and eager to contribute within an established team that values sound judgment and continuous improvement.

What We are Looking For

Aretec is seeking a hands-on Principal Engineer / Technical Lead to guide the architecture and implementation of Greenfield AI Solution within the existing Enterprise Searchteam. This is not an architect-only position: the successful candidate will make critical design decisions, write production code, lead integrations, review code, and manage technical risk across the application and AI stack.

Key Responsibilities

• Own the overall technical architecture for AI Solution, including application, integration, data, and AI design decisions.
• Provide hands-on technical leadership while designing, implementing, testing, and reviewing production code.
• Lead complex integrations with Client, enterprise data platforms, authentication services, and supporting APIs.
• Define scalable patterns for LLM integration, retrieval, agent orchestration, source traceability, evaluation, and guardrails.
• Translate program objectives into an executable engineering roadmap, sequencing work according to value, complexity, cost, access, and risk.
• Set engineering standards for security, reliability, maintainability, observability, documentation, and automated testing.
• Identify architectural and delivery risks early; recommend mitigations and communicate tradeoffs to technical and program stakeholders.
• Mentor engineers, facilitate design reviews, and resolve cross-stack technical issues without becoming detached from implementation.
• Partner with federal stakeholders and the Client team to ensure outputs remain grounded in source material and support, not replace, human judgment.

Required Qualifications

• Deep hands-on software engineering experience across backend services, APIs, and modern web applications.
• Demonstrated success leading architecture and complex implementations for enterprise or mission-critical systems.
• Strong Python skills and practical experience with AI/LLM application architecture.
• Experience with RAG, retrieval systems, agent orchestration, prompt frameworks, evaluation, and responsible-AI guardrails.
• Strong system-integration, data-flow, testing, code-review, and technical-risk-management skills.
• Ability to explain technical decisions and tradeoffs clearly to engineers, program leaders, and customer stakeholders.
• Ability to work effectively within an existing multidisciplinary delivery team.

Preferred Skills

• Experience delivering technology for federal agencies or other regulated environments.
• Experience integrating with enterprise search, document intelligence, identity, or data platforms.
• Knowledge of source attribution, model evaluation, human-in-the-loop workflows, and AI safety patterns.
• Experience mentoring senior and intermediate engineers across AI, backend, frontend, and data disciplines.

Day One

• Learn Aretec's mission, the AI Solution objectives, and the Client team's architecture, standards, security boundary, and delivery practices.
• Build relationships with engineering, program, product, and federal stakeholders.

Day Thirty

• Validate the target architecture and highest-priority technical risks.
• Contribute production code and establish practical review, integration, and testing patterns.

Day Sixty

• Lead major implementation and integration decisions across AI, backend, frontend, and data workstreams.
• Operationalize evaluation, traceability, and guardrail strategies with measurable quality checks.

Day Ninety

• Own the technical execution path for key AI Solution capabilities and drive them from design through validated delivery.
• Mentor the engineering team and establish a sustainable approach to architecture decisions, technical debt, and continuous improvement.

Benefits

At Aretec, we believe that our employees are our greatest asset. We offer a comprehensive benefits package designed to support your health, well-being, and professional development:

• Health, Dental, and Vision Insurance
• 401(k) Plan with Employer Match
• Certification Stipends
• Professional Development Opportunities
• Flexible Work Arrangements, including remote options when permitted by contract
• Paid Time Off and Holidays

Citizenship Requirement

Please note that due to the nature of our federal contracts and the secure environments in which we operate, only applicants who are sole U.S. Citizens can be considered for this position. Dual citizens are not eligible.

Equal Opportunity Employer

Aretec, Inc. is proud to be an Equal Opportunity Employer. We are committed to creating an inclusive environment for all employees and applicants. All qualified individuals will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other characteristic protected by applicable law.

This anticipated position is contingent upon contract award and final customer approval.