Senior Agentic AI Developer
PlanIT Group
Arlington, VA
This role requires deep expertise in modern AI systems, strong software engineering skills, and hands-on experience building production-grade AI agents.
Key Responsibilities
• Design and implement agentic AI systems with planning, memory, and tool orchestration
• Build and maintain multi-agent architectures for collaborative problem solving
• Integrate LLMs with APIs, databases, vector stores, and enterprise platforms
• Develop agent reasoning pipelines (ReAct, tree-of-thought, reflection loops, etc.)
• Optimize prompt engineering, system instructions, and tool schemas
• Ensure reliability, observability, and evaluation of AI agent outputs
• Establish guardrails, safety constraints, and monitoring mechanisms
• Collaborate with infrastructure teams to define AI strategy
Required Experience/Skills/Certs/Education:
Core AI & Agentic Systems
• Strong experience with large language models (OpenAI, Anthropic, open-weight models)
• Experience building agent frameworks using tools such as:
o LangGraph / LangChain, AutoGen, CrewAI
• Custom agent orchestration systems
• Deep understanding of Prompt engineering, Tool calling / function calling, Multi-agent coordination patterns
• Experience with RAG pipelines and vector databases (e.g., Pinecone, Weaviate, FAISS)
• Senior-level proficiency in Python and/or Powershell
• Strong software architecture and system design skills
• API integration
• Monitoring & logging
Required Experience:
• 5+ years of professional software engineering experience
• 2+ years working with LLM-based systems or AI applications
• Demonstrated experience building production AI agents (not just prototypes)
• Experience collaborating with and mentoring peers
• MUST BE A US CITIZEN
• MUST BE ABLE TO OBTAIN AND MAINTAIN THE REQUIRED AGENCY CLEARANCE (PUBLIC TRUST)
Preferred Experience/Skills/Certifications/Education:
• Strong architectural thinking and systems mindset
• Ability to translate business problems into agent workflows
• Clear communication of complex AI concepts to non-technical stakeholders
• Ownership mentality and bias for action
Looking for an enthusiastic AI advocate to work with a tech-savvy operational team to introduce AI Ops capabilities.
Additional Provisions:
• Pass both a client mandated clearance process to include drug screening, criminal history check and credit check.
• All candidates must be a US Citizen
• Candidate must have lived in the US for the past 5 years.
• Cannot have more than 6 months travel outside the United States within the last five years. Military Service excluded. (Exception does not include military family members.)
About the Company
PlanIT Group
PLANIT Group is a fast-growing global technology consulting firm dedicated to delivering innovative solutions to our clients that drive results. We collaborate with our partners and customers to help them improve performance, efficiency, and quality. Our team delivers innovative solutions and services - including management consulting, systems integration, ERP solutions, enterprise architecture, communications, and infrastructure services. We focus on delivering value and driving increased productivity and efficiencies for our clients’ mission. Our extensive experience in the Federal, Defense, Intelligence, State, Local, Healthcare and Commercial industries delivers proven results and accelerated benefits.
Clients engage PLANIT for our expertise, innovative approach, and our exceptional team. We promote a creative, client-centric work environment and culture, striving to provide challenging and rewarding opportunities for our company’s employees and partners. Integrity and innovation are the core principles of our company philosophy. Our customers engage us to create solutions to complex mission challenges, and PLANIT delivers. For more information, visit http://www.planitgroup.com/. Innovation. Integration. Integrity.