Harnham

Lead Software Engineer - Frontend

New York, New York, US

Role snapshot

Harnham is hiring a Lead Software Engineer - Frontend on a full-time basis. This is a hybrid role based in New York, New York, US.

Company: Harnham
Location: New York, New York, US
Work mode: Hybrid
Job type: Full-time
Experience: 8+ years
Pay listed: $220,000 - $240,000
Posted: Nov 5, 2026

Who this role suits

Experienced professionals who can lead projects, set direction and be accountable for outcomes, not just tasks.

How to prepare your application

Prepare examples of decisions you drove, how you measured the result, and how you worked with other teams.
Be ready to discuss trade-offs and scope, not only the tools you have used.
Read what Harnham publishes about its product or team, so you can say clearly why this role and this company.

Apply only on Harnham's own site. A genuine employer never asks candidates for money, deposits or bank details to apply, interview or “secure” a job. If something looks wrong, use Report a problem with this listing and we will review it. Read how we check listings.

About the role

Lead Software Engineer - Frontend

New York City, NY - 3 days per week onsite

$220,000 - $240,000 base salary + annual bonus + RSUs

THE COMPANY

Harnham is partnering with a high-growth consumer technology and financial services business operating at significant scale, serving millions of users globally. Backed by the resources and stability of a large public technology organization, the business combines the agility of a startup with the reach, data, and impact of an enterprise platform.

This is an exciting opportunity to join a rapidly expanding AI-focused engineering team that is transforming how software is designed, built, and maintained. The organization is investing heavily in AI-enabled development tools, intelligent agents, and next-generation engineering practices, with plans to significantly scale the team over the coming months.

RESPONSIBILITIES

Lead the design and delivery of AI-augmented software solutions across critical product initiatives.
Partner with engineering leaders, product stakeholders, and architects to define technical strategy and execution plans.
Build and deploy intelligent agent frameworks that assist with software development, code review, testing, and operational efficiency.
Drive modernization efforts by migrating legacy systems and improving platform scalability and maintainability.
Define and implement specification-driven development practices that leverage generative AI capabilities.
Own the technical direction for a key product vertical while mentoring engineers and influencing architecture decisions across teams.

SKILLS AND EXPERIENCE

Required

8+ years of professional software engineering experience.
Strong full-stack development background with deep expertise in TypeScript.
Experience with modern server-side frameworks such as NestJS, Remix, or similar technologies.
Hands-on experience designing and deploying applications in Kubernetes environments.
Demonstrated experience leading large-scale technical initiatives and influencing engineering best practices.
Exposure to AI-assisted software development, LLM-powered applications, developer tooling, or agent-based systems.
Bachelor's degree in Computer Science or a related technical discipline.

Preferred

Experience with modern AI development platforms, orchestration frameworks, and model integration patterns.
Knowledge of functional programming concepts and practices.
Experience working within marketplace, fintech, consumer technology, or product-driven organizations.
Familiarity with advanced frontend architecture concepts, including suspense boundaries and modern rendering techniques.

BENEFITS

Competitive base salary and bonus structure.
Meaningful equity participation.
Hybrid working model with a collaborative engineering culture.
Opportunity to shape the future of AI-enabled software engineering.
High-impact role with significant technical ownership and visibility.
Career progression within a rapidly growing engineering organization.

HOW TO APPLY

Please register your interest by sending your CV via the Apply link on this page.

KEY TERMS