Principal Machine Learning Engineer I** Hybrid in Horsham, PA or Remote EST Preferred
LexisNexis1 day ago
Base Salary
$136k - $253k/yr
Responsibilities
- Design, prototype, and implement AI-powered applications, services, agents, and workflows.
- Translate business, user, and government mission requirements into secure, scalable technical solutions.
- Develop reusable AI components, services, APIs, evaluation frameworks, and reference implementations.
- Integrate AI capabilities with enterprise platforms, data sources, workflows, and existing applications.
- Evaluate models, platforms, frameworks, and vendors based on performance, cost, security, scalability, and mission fit.
- Contribute to solution architectures, AI architecture patterns, guardrails, standards, and reference architectures.
- Provide technical guidance, code reviews, mentoring, and hands-on support to engineering and data science teams.
- Document architecture decisions, tradeoffs, assumptions, and risks and participate in architecture reviews.
- Support technical discovery sessions, demonstrations, proofs of concept, proposals, RFIs, RFP responses, and customer workshops.
- Design controls for evaluation, model and prompt versioning, data lineage, access management, logging, monitoring, traceability, human oversight, and responsible AI.
- Partner with cybersecurity, legal, privacy, compliance, and governance teams throughout the solution lifecycle.
Requirements
- Bachelor’s degree in computer science, engineering, data science, information systems, or a related field, or equivalent practical experience.
- Significant professional software engineering experience delivering production applications or platforms.
- Hands-on experience developing AI, machine-learning, or data-intensive solutions.
- Proficiency in Python and experience with APIs, cloud services, data pipelines, software development practices, and source control.
- Experience with generative-AI patterns including large language models, retrieval-augmented generation, embeddings, vector search, tool use, structured outputs, or AI agents.
- Understanding of cloud-native architecture, system integration, identity and access management, observability, and secure development practices.
- Ability to evaluate technical alternatives and communicate architecture decisions and tradeoffs.
- Experience working across product, engineering, data, security, and business teams.
- Ability to satisfy applicable government background, suitability, or contractual requirements.
- U.S. citizenship, successful completion of a background investigation, and Public Trust security clearance are required.
- Preferred qualifications include government, government contracting, regulated-environment, sensitive-data, cloud-platform, AI orchestration, model evaluation, MLOps, LLMOps, responsible-AI, proposal-support, technical leadership, mentoring, architecture-review, or relevant certification experience.
Benefits
- Hybrid work in Horsham, PA, with remote EST preference; the posting states the employee must be located near Horsham for the hybrid onsite schedule.
- Flexible hours, wellbeing initiatives, shared parental leave, study assistance, sabbaticals, and work/life-balance programs.
- Medical, dental, and vision benefits; 401(k) matching; and an Employee Share Purchase Plan.
- Wellness platform with incentives, Headspace subscription, Employee Assistance, paid time-off programs, disability insurance, life insurance, and supplemental illness and hospital benefits.
- Family benefits including bonding and family-care leave, adoption and surrogacy benefits, and health and dependent-care spending accounts.
- Commuter spending accounts and up to two days of paid leave for Employee Resource Group participation and volunteering.
- Annual incentive bonus eligibility.
Categories
About LexisNexis
LexisNexis builds research, content, and workflow software for legal, regulatory, and business professionals, including the Lexis+ platform and AI‑assisted drafting and analytics tools. It sells subscriptions and licenses to primary law, news, and practical guidance, plus SaaS products for litigation, compliance, and practice management used by law firms, corporate legal, governments, and universities. Founded in 1970 and headquartered in New York City, it is part of RELX and serves customers in 150+ countries.