Lead Harness Engineer

FICO; Bengaluru; On-site; INR 3,000,000 - 6,000,000; Full time

Job summary

FICO in Bengaluru is seeking a Lead Harness Engineer to architect and implement the environment that guides AI agents toward correct, maintainable output. You will own end-to-end controls—from problem framing to production readiness—and help scale the harness across teams.

You'll design feedforward guides and feedback sensors, enforce quality gates, improve observability, and mentor junior engineers while collaborating with architects to balance deterministic controls with AI-based techniques.

Qualifications

• Bachelor's or Master's in Computer Science or related discipline with software development experience.
• Strong background in large codebases, architecture, testing and maintainability.
• Hands-on experience with AI coding agents and spec-driven development.

Responsibilities

• Design, develop, deploy, and support harness components (guides, feedback loops, guardrails, context).
• Build feedforward guides (instruction files, reusable skills, architectural rules).
• Create feedback sensors (linters, static analysis, tests) to catch issues early.
• Run steering loop to prevent repeated mistakes and maintain knowledge in the repo.
• Contribute to quality gates, release criteria, and observability improvements.
• Mentor junior engineers and collaborate with architects on strategy.

Skills

Software engineering

Architecture

Testing

CI/CD

Observability

Agent tooling

Communication

Education

Bachelor's/Master's in Computer Science

Tools

Linters

Static analysis

CI pipelines

Containerized build/test

Instrumentation

Job description

FICO (NYSE: FICO) is a leading global analytics software company, helping businesses in 100+ countries make better decisions. Join our world-class team today and fulfill your career potential!

The Opportunity Come join our engineering team in a hands-on technical role at the heart of a new discipline: Harness Engineering. As AI coding agents take on more of the software lifecycle, the hard part is no longer writing code — agents generate it faster than humans can review it, so the bottleneck shifts to verification and trust. Harness Engineering exists to break that bottleneck: engineering the environment that steers agents toward correct, maintainable, well-architected output so that quality is enforced by the system, not re-audited by a person on every change. We call that environment the harness (Agent = Model + Harness). As a Lead Harness Engineer you'll build and own the individual controls that make up that harness, working end-to-end from problem to production.

What You'll Contribute

Design, develop, deploy, and support components of the harness — the guides, feedback loops, guardrails, and shared context that turn raw model capability into production-grade engineering. This is a hands-on role focused on systems and leverage, not hand-writing application code.

Build feedforward guides — agent instruction files, reusable skills, architectural rules, reference docs, and codemods — that help agents get it right the first time.

Build feedback sensors — custom linters, static analysis, structural and architecture-fitness tests, verification loops, and LLM-as-judge reviewers — that catch issues before they reach human reviewers.

Run the steering loop — when an agent repeats a mistake, engineer a control so it can't happen again — and help keep repository knowledge (docs, specs, context) legible to agents, fighting drift.

Contribute to quality gating and release criteria, and to LLM testing that ensures AI-generated output meets quality and safety thresholds.

Help improve observability into agent work and track the measures that matter — cost per merged PR, time-to-merge for agent-assisted PRs, review velocity relative to PR size, defect escape rate, and agent-PR survival rate.

Evaluate the stability, compatibility, scalability, interoperability, and performance of harness components. Continually learn new techniques in agent-augmented engineering, and serve as a source of technical expertise and mentor to junior team members.

What We're Seeking

Bachelor's/Master's in Computer Science or related disciplines, or relevant experience in software architecture, design, development, and testing.

Strong software engineering background; you've worked in large codebases and care about architecture, testing, and maintainability.

Comfortable building tooling across a modern stack — linters and static analysis, CI pipelines, containerized build/test environments, and instrumentation/observability — and familiar with agent instruction conventions such as AGENTS.md.

Hands-on experience with AI coding agents (e.g. Claude Code, Codex, or similar) and a feel for where they succeed and fail.

Experience with spec-driven development, context engineering, agent orchestration, fitness functions, and developer-platform work.

A systems mindset — you'd rather fix the environment than fix one output — and the ability to encode "what good looks like" into mechanical, repeatable rules.

Judgement about when to reach for deterministic, computational controls (type checkers, linters, structural/architecture-fitness tests) versus inferential, LLM-based ones (AI code review, LLM-as-judge) — and an understanding of the cost, speed, and reliability trade-offs between them.

Clear communicator; able to articulate design with architects and discuss strategy and requirements with teams.

Our Offer to You

An inclusive culture strongly reflecting our core values: Act Like an Owner, Delight Our Customers and Earn the Respect of Others. The opportunity to make an impact and develop professionally by leveraging your unique strengths and participating in valuable learning experiences.

Highly competitive compensation, benefits and rewards programs that encourage you to bring your best every day and be recognized for doing so.

An engaging, people-first work environment offering work/life balance, employee resource groups, and social events to promote interaction and camaraderie.

Why Make a Move to FICO?

At FICO, you can develop your career with a leading organization in one of the fastest-growing fields in technology today – Big Data analytics. You’ll play a part in our commitment to help businesses use data to improve every choice they make, using advances in artificial intelligence, machine learning, optimization, and much more.

FICO makes a real difference in the way businesses operate worldwide:

• Credit Scoring — FICO® Scores are used by 90 of the top 100 US lenders.
• Fraud Detection and Security — 4 billion payment cards globally are protected by FICO fraud systems.
• Lending — 3/4 of US mortgages are approved using the FICO Score.

Global trends toward digital transformation have created tremendous demand for FICO’s solutions, placing us among the world’s top 100 software companies by revenue. We help many of the world’s largest banks, insurers, retailers, telecommunications providers and other firms reach a new level of success.

Our success is dependent on really talented people – just like you – who thrive on the collaboration and innovation that’s nurtured by a diverse and inclusive environment. We’ll provide the support you need, while ensuring you have the freedom to develop your skills and grow your career.

Join FICO and help change the way business thinks! Learn more about how you can fulfil your potential at www.fico.com/Careers

Equal Employment Opportunity

FICO promotes a culture of inclusion and seeks to attract a diverse set of candidates for each job opportunity. We are an equal employment opportunity employer and we’re proud to offer employment and advancement opportunities to all candidates without regard to race, color, ancestry, religion, sex, national origin, pregnancy, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status. Research has shown that women and candidates from underrepresented communities may not apply for an opportunity if they don’t meet all stated qualifications. While our qualifications are clearly related to role success, each candidate’s profile is unique and strengths in certain skill and/or experience areas can be equally effective. If you believe you have many, but not necessarily all, of the stated qualifications we encourage you to apply. Information submitted with your application is subject to the FICO Privacy policy at https://www.fico.com/en/privacy-policy

FICO powers decisions that help people and businesses around the world prosper. Founded in 1956, FICO has been the trusted backbone of financial decisioning for more than seven decades. We empower businesses worldwide with applied intelligence and advanced analytics to transform complex data into fair, explainable, and actionable decisions — enabling smarter outcomes, stronger customer relationships, and sustainable growth. FICO clients include more than half of the top 100 banks in the world, more than 600 personal and commercial line insurers in North America and Europe, 400+ retailers and general merchandisers, all of the 100 largest U.S. credit card issuers, and more. FICO is a global leader in analytics software, empowering businesses to make smarter, faster decisions through cutting-edge data science, machine learning, and AI. Creators of the iconic FICO® Score — the standard in credit decisioning — and recognized in both the Forrester Wave™ and Gartner® Magic Quadrant™ for its decision intelligence. FICO delivers a powerful platform built on Applied Intelligence, combining advanced analytics with explainable AI to drive transparency, reduce risk, and enable hyper-personalized customer experiences at scale. Trusted by organizations across financial services, insurance, payments, and beyond, FICO turns data into decisions that matter.