AI-First Product Engineer: End-to-End Builder

EY; Miami (FL); Hybrid; USD 107,000 - 177,000; Full time

Benefits offered by this job

Medical and dental coverage

Pension and 401(k) plans

Flexible vacation policy

Paid time off options

Job summary

EY is seeking an experienced engineer to turn AI capabilities into durable products. You’ll work as an end-to-end builder, close to users, product decisions, and production code, with founder-like ownership and disciplined testing.

You’ll join Challenger Core, a fast-moving EY program building reusable technology and guardrails. This role requires up to 50% travel and a hybrid on-site presence in US offices, with a broad, impact-focused product scope.

Qualifications

• 5+ years of relevant experience.
• Bachelor’s Degree in a relevant field.
• End-to-end delivery: a record of taking customer- or employee-facing software from an unclear concept through launch, learning, and adoption.
• Technical breadth: strong full-stack capability across modern frontend, backend, API, data, and cloud technologies, demonstrated through shipped work.
• Applied AI experience: hands-on experience building products with large language models, retrieval, tools, or comparable AI patterns.
• Evaluation experience: evidence of automated testing and behavioral evaluation for systems with variable or probabilistic outputs.
• Live-service ownership: responsibility for telemetry, debugging, reliability, incident response, recovery, and performance improvement.
• User-centered practice: experience working directly with users, designers, and product leaders to turn evidence into better product decisions.
• Engineering craft: clear specifications, maintainable code, thoughtful review, and sound technical trade-offs.
• Travel and On-site requirements: up to 50% travel and hybrid capacity.

Responsibilities

• Start with the user. Work directly with users and domain experts to understand real workflows, observe friction, and identify where AI can create distinctive value.
• Test assumptions quickly. Turn product hypotheses into concise specifications, prototypes, and small releases that generate useful evidence early.
• Own complete product slices. Build coherent verticals across the experience, services, data, AI behavior, and enterprise integrations rather than optimizing a single layer.
• Shape AI behavior. Design instructions, context, retrieval, structured outputs, and tool use, choosing adaptation or tuning only when evidence supports it.
• Build the evidence system. Create representative tasks and automated evaluations that show whether the product is useful, correct, safe, accessible, and improving.
• Connect outcomes to behavior. Instrument user journeys so the team can relate adoption and task success to system behavior, latency, failures, and cost.
• Engineer for responsible use. Build clear permission boundaries, secure data handling, human checkpoints, graceful degradation, recovery, and rollback into the experience.
• Own production quality. Release incrementally, monitor live behavior, respond to incidents, and turn failures into durable product and engineering improvements.
• Make practical trade-offs. Balance experience, quality, speed, reliability, and cost, using deterministic software when it is the more dependable choice.
• Contribute reusable patterns. Share proven components and evaluation assets with the broader platform while remaining accountable for their performance in the product workflow.

Skills

Full-stack engineering

AI application depth

Product judgment

Evaluation discipline

Production ownership

High-agency collaboration

Education

Bachelor’s Degree in a relevant field

Job description

EY is seeking an experienced engineer to turn AI capabilities into durable products. You’ll work as an end-to-end builder, close to users, product decisions, and production code, with founder-like ownership and disciplined testing.

You’ll join Challenger Core, a fast-moving EY program building reusable technology and guardrails. This role requires up to 50% travel and a hybrid on-site presence in US offices, with a broad, impact-focused product scope.