Job Description
Lead Software Engineer - Frontend
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New York City, NY - 3 days per week onsite
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$220,000 - $240,000 base salary + annual bonus + RSUs
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THE COMPANY
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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.
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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.
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RESPONSIBILITIES
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- 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.
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SKILLS AND EXPERIENCE
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Required
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- 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.
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Preferred
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- 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.
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BENEFITS
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- 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.
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HOW TO APPLY
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Please register your interest by sending your CV via the Apply link on this page.
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KEY TERMS
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Lead Software Engineer | Principal Engineer | Senior Software Engineer | AI Engineering | Generative AI | Agentic AI | LLMs | TypeScript | NestJS | Remix | Kubernetes | Full Stack Engineering | Technical Leadership | Software Architecture | Platform Engineering | FinTech | Product Engineering | AI-Augmented Development | Enterprise Software | Hybrid NYC