Senior Full Stack Engineer

LaunchDarkly

3d•$163,000 - $263,670

About The Position

The Senior Full Stack Engineer role at LaunchDarkly involves leading the design and delivery of customer-facing product experiences and their supporting backend systems. This position requires working across the full stack, from user interfaces to backend services, APIs, and data flows. The engineer will influence how customers understand, configure, and control software delivery. This role offers the opportunity to own complex, high-impact work where engineering judgment is highly visible. Collaboration with Product, Design, Data, Staff Engineers, Engineering Managers, and adjacent teams is essential to ensure that complex capabilities are made clear and useful, while maintaining scalability, security, observability, and dependability of the underlying systems. Technical decisions made in this role will significantly influence both the product experience and the systems that enable it.

Requirements

7+ years of experience building and operating production web applications, with a track record of delivering meaningful customer or business impact.
Demonstrated ability to lead complex projects across frontend and backend layers, including ambiguous requirements or cross-team dependencies.
Strong experience with a modern frontend framework such as React and a typed language such as TypeScript, or equivalent experience.
Strong backend experience designing or operating APIs, services, data stores, or asynchronous systems in a production environment.
Experience with a backend language such as Go, Python, Rust, or an equivalent language. (Most of our teams use Go)
Sound judgment across architecture, user experience, accessibility, performance, reliability, security, and maintainability tradeoffs.
Strong product instincts and the ability to connect technical decisions to customer outcomes and business goals.
Ability to create alignment with engineers and cross-functional partners through clear communication and inclusive decision-making.
Experience mentoring engineers, improving team practices, and raising the quality of technical execution.
A strong sense of ownership for the full lifecycle of the systems and experiences you help build.
Comfort learning unfamiliar systems and navigating changing priorities with curiosity and a collaborative mindset.

Responsibilities

Lead the design and delivery of large or ambiguous end-to-end initiatives across frontend and backend systems.
Develop product experiences using technologies such as TypeScript and React, along with services and APIs using technologies such as Go, Python, or comparable tools.
Translate customer problems and product goals into thoughtful technical designs, clear tradeoffs, and incremental delivery plans.
Own work from discovery and design through implementation, launch, measurement, operational support, and iteration.
Partner with Product, Design, Data, and engineering leaders to balance usability, accessibility, performance, reliability, security, cost, and time to value.
Establish patterns and practices that improve consistency, maintainability, developer experience, and quality across the product.
Improve observability and operational health across the frontend and backend systems you touch, and participate in incident response when needed.
Influence architecture and technical direction through design documents, code reviews, technical discussions, and clear written and verbal communication.
Mentor engineers and help teammates grow their technical judgment, product instincts, and ability to deliver end-to-end work.
Represent customer needs and production realities in cross-functional decisions, and connect technical work to measurable outcomes.