Senior AI/ML Engineer

Position Description & Qualifications Looking for a Senior AI/ML Engineer position where you can make a difference every day? Serco Inc. is seeking a talented and detail-oriented individual to join our team as a Senior AI/ML Engineer. Discover this great opportunity with Serco Inc., where you will work remotely with occasional office visits in support of advanced AI/ML systems that drive innovation and operational excellence. Bring your expertise and meticulous skills to make an impact as our new Senior AI/ML Engineer, supporting critical missions that enhance our technical capabilities and deliver value to our clients. In this role, you will be responsible for designing, building, and deploying production-grade agentic AI systemsu2014LLM-powered workflows that can reason, call tools, retrieve knowledge (RAG), and reliably operate inside real software environments. Youu2019ll own solutions end-to-end, from agent orchestration and evaluation to deployment, scaling, and monitoring, using Python and Rust where performance and correctness matter. The ideal candidate will have a strong background in backend and applied AI engineering, excellent communication skills, and a passion for innovation. This position requires a proactive approach to problem-solving and the ability to work effectively in a fast-paced environment. Strong collaboration and communication skills are essential, as you will act as a key contributor and technical resource across teams and stakeholders. The successful candidate will be responsible for: Collaboration and Communication + Act as a go-to resource for AI/ML engineering inquiries and strategic decisions across multiple teams. + Clearly articulate technical direction, updates, and key priorities to stakeholders, while working in close coordination with Product, DevOps, and Support to drive effective rollouts and maximize system reliability and user engagement. Technical Leadership and Solution Delivery + Build and ship LLM agent workflows using frameworks like LangChain, LangGraph, AutoGen, CrewAI, LlamaIndex (or equivalent). + Implement tool-calling, agent state/memory, structured outputs, and event-driven workflow triggers. + Design and deploy RAG pipelines: embeddings, retrieval, reranking, vector databases (e.g., pgvector, qdrant, Pinecone, Elasticsearch), and evaluation loops. + Build model serving / LLMOps: API endpoints, routing, streaming, rate limits, budgets, reliability, and monitoring in production. + Use Rust to accelerate critical paths (inference orchestration, retrieval/ranking pipelines, high-throughput services) and integrate cleanly with Python stacks. + Create evaluation harnesses for agents (quality, safety, latency, cost), and iterate via experiments and A/B testing. + Deploy on modern infrastructure: Docker, Kubernetes, CI/CD, and production observability (logs/metrics/traces). Continuous Improvement and Feedback + Test and evaluate system performance based on extensive technical and user feedback. + Obtain feedback from users and stakeholders on how well solutions meet their needs. + Coordinate and synchronize improvements by sharing feedback with the team and evolving solution design. To be successful in this role, you will have: + Active Secret security clearance required + U.S Citizenship + Bacheloru2019s degree in a relevant field + Minimum of 10 years of relevant experience + Excellent communication and collaboration skills + Ability to work effectively with cross-functional teams and stakeholders + Ability to travel up to 10% Additional Desired Experience and Skills: + Strong backend and applied AI engineering experience with Python; comfortable owning production services end-to-end + Working proficiency in a systems languageu2014Rust preferred (C++/Go acceptable)u2014and a desire to use it where it wins + Hands-on experience with LLM agent systems and the u201cagent ecosystemu201d (multi-agent patterns, orchestration, tool use) + Real deployment experience: containers, orchestration, scaling, and u201cit stays up on weekendsu201d operational thinking + Experience building RAG / search / retrieval systems (vector indexing, ranking, relevance evaluation) + Deep understanding of LLM architecture and inference optimization + Experience with distributed compute / large-scale systems (Ray/Slurm/etc.) + Building internal platforms or libraries for agent reuse across teams Company Overview Serco Inc. (Serco) is the Americas division of Serco Group, plc. In North America, Sercou2019s 9,000+ employees strive to make an impact every day across 100+ sites in the areas of Defense, Citizen Services, and Transportation. We help our clients deliver vital services more efficiently while increasing the satisfaction of their end customers. Serco serves every branch of the U.S. military, numerous U.S. Federal civilian agencies, the Intelligence Community, the Canadian government, state, provincial and local governments, and commercial clients. While your place may look a little different depending on your role, we know you will find yours here. Wherever you work and whatever you do, we invite you to discover your place in our world. Serco is a place you can count on and where you can make an impact because every contribution matters. To review Serco benefits please visit: . If you require an accommodation with the application process please email: or call the HR Service Desk at 800-628-6458, option 1. Please note, due to EEOC/OFCCP compliance, Serco is unable to accept resumes by email. Candidates may be asked to present proof of identify during the selection process. If requested, this will require presentation of a government-issued I.D. (with photo) with name and address that match the information entered on the application. Serco will not take possession of or retain/store the information provided as proof of identity. For more information on how Serco uses your information, please see our Applicant Privacy Policy and Notice. Serco does not accept unsolicited resumes through or from search firms or staffing agencies without being a contracted approved vendor. All unsolicited resumes will be considered the property of Serco and will not be obligated to pay a placement or contract fee. If you are interested in becoming an approved vendor at Serco, please email . Serco is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, and other legally protected characteristics. Pay Transparency Our Total Rewards package includes competitive pay, performance-based incentives, and benefits that promote well-being and work-life balanceu2014so you can thrive both professionally and personally. Eligible employees also gain access to a wide range of benefits from comprehensive health coverage and health savings accounts to retirement plans, life and disability insurance, and time-off programs that support work-life balance. Program availability may vary based on factors such as contract type, location, hire date, and applicable collective bargaining agreements. Salary range: The range for this position can be found at the top of this posting. This range is provided as a general guideline and represents a good faith estimate across all experience levels. Actual base salary will be determined by a variety of factors, including but not limited to, the scope of the role, relevant experience, job-related knowledge, education and training, key skills, and geographic market considerations. For roles available in multiple states, the range may vary to reflect differences in local labor markets. In addition to base salary, eligible positions may include other forms of compensation such as annual bonuses or long-term incentive opportunities.Benefits u2013 Comprehensible benefits for full-time employees (part-time employees receive a limited package tailored to their role): + Medical, dental, and vision insurance + Robust vacation and sick leave benefits, and flexible work arrangements where permitted by role or contract + 401(k) plan that includes employer matching funds + Tuition reimbursement program + Life insurance and disability coverage + Optional coverages that can be purchased, including pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection + Birth, adoption, parental leave benefits + Employee Assistance Plan To review all Serco benefits please visit: . Serco complies with all applicable state and local leave laws, including providing time off under the Colorado Healthy Families and Workplaces Act for eligible Colorado residents, in alignment with our policies and benefit plans. The application window for this position is for no more than 60 days. We encourage candidates to apply promptly after the posting date, as the position may close earlier if filled or if the application volume exceeds expectations. Please submit applications exclusively through Sercou2019s external (or internal) career site. If an applicant has any concerns with job posting compliance, please send an email to: .

Created: 2026-03-04