An open-source JavaScript tooling company focused on making programming simpler, backed by $26M in funding.

Bun is an innovative open-source JavaScript tooling company that has secured $26 million in funding from top Silicon Valley investors. As one of the most popular GitHub repositories with a thriving community of 33,000 Discord members, Bun is revolutionizing JavaScript development. The company recently achieved significant milestones with the launch of Bun v1.0 in September 2023 and the addition of Windows support in v1.1.

The Senior Systems Engineer role offers a unique opportunity to work on low-level systems programming, primarily contributing to Bun's open-source GitHub repository and future commercial hosting products. The position involves working with cutting-edge technology, including developing JavaScript & TypeScript parsers, HTTP/1.1 clients, TCP & UDP socket APIs, efficient globbing libraries, and bash-like interpreters.

At Bun, engineers take ownership of the entire software stack, making it an excellent environment for learning and growing in systems programming. The team has built impressive components like coreutils implementations and various system-level tools. The role requires expertise in systems programming languages and manual memory management, with bonus points for experience in Zig, JavaScript runtime internals, and distributed systems.

The position offers competitive compensation ($160,000 - $220,000 plus equity), comprehensive healthcare benefits, and a positive work culture in downtown San Francisco. This is an on-site role perfect for someone passionate about making JavaScript better for everyone while working alongside talented engineers in a well-funded, fast-growing company.

Senior Systems Engineer role at Bun, working on open-source JavaScript tooling and systems programming in San Francisco, offering $160-220K plus equity.

Senior Systems Engineer

An open-source JavaScript tooling company focused on making programming simpler, among the most popular GitHub repositories.

Bun, a well-funded open-source JavaScript tooling company with $26M in funding, is seeking a Systems Engineer focused on Developer Productivity to join their San Francisco office. This role is perfect for engineers passionate about building developer tools and improving engineering workflows. You'll be working on critical infrastructure to accelerate Bun's development velocity, including debugging tools for memory leak detection, performance optimization, and enhancing CI/CD systems with features like build caching and flaky test detection.

The position offers a unique opportunity to work with systems programming at a deep level. The team at Bun takes ownership of the entire software stack and has built impressive components like JavaScript & TypeScript parsers, HTTP/1.1 clients, and various system-level utilities. You'll be working with technologies like Zig (Bun's primary language), and dealing with low-level programming concepts including memory management and system internals.

This is an on-site position in San Francisco, offering competitive compensation ($120K-$180K plus equity), comprehensive healthcare benefits, and a generous PTO policy. The role requires strong expertise in CI/CD workflows, infrastructure-as-code, and systems programming languages. Experience with self-hosted CI runners, Buildkite, AWS EC2, and JavaScript runtime internals would be advantageous.

Join a team that's making significant impacts in the JavaScript ecosystem, with a growing community of 33,000 Discord members and recognition as one of the most popular GitHub repositories. This is an excellent opportunity for engineers who want to work on fundamental developer tools while learning and growing in systems programming.

Systems Engineer role at Bun focusing on developer productivity tools, CI/CD improvements, and debugging infrastructure in San Francisco.

Systems Engineer - Developer Productivity

Bun is an incredibly fast all-in-one JavaScript toolkit focused on making programming simpler.

Bun is an open-source JavaScript tooling company that has raised $26 million from top Silicon Valley investors and boasts a thriving community of 33,000 Discord members. We're revolutionizing JavaScript development by making it faster and more efficient.

As a Systems Engineer focusing on Developer Productivity, you'll be instrumental in accelerating Bun's development velocity. Your role will involve creating sophisticated debugging tools for identifying memory leaks and performance bottlenecks, as well as implementing CI/CD improvements including build caching and flaky test detection.

At Bun, we pride ourselves on taking full ownership of the entire software stack. Our team has accomplished remarkable feats, including developing a JavaScript & TypeScript parser, HTTP/1.1 client, TCP & UDP socket APIs, an efficient globbing library, and a bash-like interpreter & shell. We've even built our own coreutils like 'cp', 'ls', and 'seq'.

This position offers an exceptional opportunity to dive deep into systems programming while working with cutting-edge technology. You'll be joining a team of passionate engineers dedicated to making JavaScript better for everyone, in an environment that values technical excellence and innovation.

The role is based in our San Francisco office, where you'll work alongside talented professionals who share your commitment to technical excellence. We offer competitive compensation, comprehensive healthcare benefits, and a flexible time-off policy, demonstrating our commitment to work-life balance and employee wellbeing.

If you're excited about working with systems programming languages, have strong experience with CI/CD workflows, and want to be part of a team that's reshaping the JavaScript ecosystem, we want to hear from you.

Senior Systems Engineer role at Bun focusing on developer productivity tools, CI/CD improvements, and systems programming.

Open-source developer tooling company building the fastest all-in-one toolkit for JavaScript and TypeScript development.

Bun, a venture-backed open-source developer tooling company, is seeking a Product Engineer focused on AI initiatives. The company has raised $26M and is known for creating the fastest all-in-one toolkit for JavaScript and TypeScript development. This role represents an exciting opportunity to build Bun's first revenue-generating product, combining their existing speed advantages with modern AI capabilities.

The position offers a startup-within-a-startup experience, where you'll have the autonomy to rapidly prototype and ship AI-powered products while having access to Bun's established user base and resources. You'll work directly with leadership in a low-bureaucracy environment, focusing on solving real developer problems through innovative AI solutions.

As the Product Engineer, you'll be responsible for the entire product development lifecycle - from ideation to metrics tracking. The role requires strong full-stack engineering capabilities, hands-on AI/LLM experience, and the ability to move quickly while maintaining product quality. You'll be joining a small, high-impact team where your work will directly influence the company's direction.

The position is based in their downtown San Francisco office, with relocation assistance available. This is an ideal opportunity for someone who combines technical expertise with product intuition and wants to be at the forefront of applying AI to developer tools.

Product Engineer role at Bun focusing on building AI-powered developer tools, combining full-stack development with AI/LLM integration in San Francisco.

Product Engineer, AI

Bun is a fast all-in-one JavaScript runtime and toolkit designed as a drop-in replacement for Node.js.

Bun is seeking a Senior Systems Engineer to join our team in San Francisco. As a key member of our engineering team, you'll be working on critical backend systems and infrastructure that powers our fast JavaScript runtime environment. This role offers an exciting opportunity to work at the intersection of systems programming and JavaScript runtime development.

The ideal candidate will have strong experience in systems programming, particularly in areas related to runtime environments, compilers, or high-performance computing. You'll be working closely with our core team to optimize performance, improve reliability, and enhance the capabilities of our JavaScript runtime.

At Bun, we're committed to pushing the boundaries of what's possible in JavaScript execution speed and efficiency. Our runtime is designed to be a faster, more efficient alternative to Node.js, and we need talented engineers who can help us continue to innovate in this space.

You'll be working in a fast-paced environment where your contributions will have a direct impact on millions of developers who use our platform. This is a unique opportunity to work on cutting-edge technology that's reshaping how JavaScript applications are built and run.

We offer competitive compensation and the chance to work on open-source technology that's making waves in the developer community. If you're passionate about systems programming and want to work on technology that's changing how developers work with JavaScript, we want to hear from you.

Senior Systems Engineer position at Bun, working on backend systems and infrastructure in San Francisco.

Bun is seeking a Systems Engineer focused on Developer Productivity to join our team in San Francisco. This role sits at the intersection of systems engineering and developer experience, working to optimize and enhance the tools and processes that power our development workflow. As a Systems Engineer - Developer Productivity, you'll be responsible for building and maintaining the infrastructure that enables our engineering team to work efficiently and effectively.

The ideal candidate will have a strong background in systems engineering and a passion for developer tooling. You'll work closely with our engineering teams to identify bottlenecks, implement solutions, and continuously improve our development environment. This role requires a deep understanding of build systems, CI/CD pipelines, and developer workflows.

At Bun, we're building a fast all-in-one JavaScript runtime and toolkit designed as a drop-in replacement for Node.js. This role offers the opportunity to work on cutting-edge technology while making a significant impact on developer productivity across the JavaScript ecosystem. You'll be joining a team that values innovation, collaboration, and technical excellence.

This position offers the chance to work on meaningful challenges at scale, with the opportunity to influence the direction of developer tooling both internally and potentially for the broader JavaScript community. You'll be working in a fast-paced environment where your contributions will have a direct impact on the efficiency and effectiveness of our engineering organization.

The role combines technical depth with the opportunity to drive significant improvements in how our teams work. If you're passionate about developer productivity and systems engineering, and want to work on technology that impacts developers worldwide, this role offers an excellent opportunity to make your mark.

Systems Engineer - Developer Productivity position at Bun in San Francisco, focusing on improving developer tooling and productivity.

An open-source JavaScript tooling company focused on making programming simpler, among the most popular GitHub repositories with 33,000 Discord members.

Bun, a well-funded open-source JavaScript tooling company, is seeking a Systems Engineer focused on Developer Productivity to join their San Francisco office. With $26M in funding and a thriving community of 33,000 Discord members, Bun is revolutionizing JavaScript development. The role focuses on building tools and infrastructure to enhance team productivity, including debugging tools for memory leak detection, performance optimization, and CI/CD improvements. 

The position offers a unique opportunity to work with systems programming at a deep level. The team has built impressive components including a JavaScript & TypeScript parser, HTTP/1.1 client, TCP & UDP socket APIs, and various system utilities. This hands-on role requires expertise in CI/CD workflows, infrastructure-as-code, and systems programming languages.

The ideal candidate will have strong experience with self-hosted CI runners and understanding of manual memory management in large codebases. Knowledge of Zig (Bun's primary language), JavaScript runtime internals, and UNIX systems is a plus. The company offers competitive compensation ($120K-$180K plus equity), comprehensive healthcare, and generous time-off policies.

This is an on-site position in San Francisco with daily catered lunches and a collaborative work environment. The role presents an excellent opportunity for engineers passionate about improving JavaScript development tools and interested in systems-level programming. Join a team that values technical excellence and is committed to making programming simpler for developers worldwide.

Bun is an incredibly fast all-in-one JavaScript toolkit for building, installing, running, and testing JavaScript and TypeScript.

Bun is an open-source developer tooling company focused on creating the fastest all-in-one toolkit for JavaScript and TypeScript development. With $26 million in funding from top Silicon Valley investors and one of GitHub's most popular repositories, Bun is revolutionizing the JavaScript ecosystem.

The Senior Systems Engineer role involves extensive open-source low-level systems work, primarily in Bun's GitHub repository and future commercial hosting product. The team takes full ownership of the entire software stack, having built components like JavaScript & TypeScript parser, HTTP/1.1 client, TCP & UDP socket APIs, and various system utilities.

This is an excellent opportunity for systems programmers to work on cutting-edge technology while making JavaScript development faster and more productive. The role is based in downtown San Francisco, with relocation assistance available.

Key responsibilities include:
- Developing and maintaining low-level systems components
- Contributing to Bun's core infrastructure
- Working on performance-critical systems
- Building scalable and efficient solutions

The ideal candidate should have strong experience in systems programming languages (C, C++, Zig, Go, or Rust), expertise in manual memory management, and excellent communication skills. Knowledge of JavaScript runtime internals, UNIX systems, or distributed systems is a plus.

Join a small, high-ownership team with minimal meetings and great benefits, including comprehensive healthcare and daily meals. Be part of a mission to transform the JavaScript development ecosystem.

Senior Systems Engineer role at Bun, working on open-source low-level systems and building the fastest JavaScript toolkit.

Open-source JavaScript tooling company focused on making programming simpler, backed by $26M in funding.

Bun is an innovative open-source JavaScript tooling company that has secured $26 million in funding from top Silicon Valley investors. As one of the most popular GitHub repositories with a thriving community of 33,000 Discord members, Bun is focused on making JavaScript faster and more productive. The company recently achieved significant milestones with the launch of Bun v1.0 in September 2023 and added Windows support in v1.1.

The Systems Engineer role offers a unique opportunity to work on low-level systems programming, primarily contributing to Bun's open-source GitHub repository and future commercial hosting products. The team takes ownership of the entire software stack, making it an excellent environment for learning systems programming. Daily work involves developing complex components like JavaScript & TypeScript parsers, HTTP/1.1 clients, TCP & UDP socket APIs, efficient globbing libraries, and bash-like interpreters.

The position is based in their San Francisco office, where the team works on making JavaScript better for everyone. Bun offers a competitive compensation package, including startup equity, comprehensive healthcare benefits, and flexible time-off policies. The company maintains its own office in downtown San Francisco with daily catered lunches, fostering a collaborative environment where engineers are trusted, empowered, and well-compensated for their contributions.

This role is perfect for someone with strong systems programming experience who wants to work on cutting-edge JavaScript tooling and infrastructure. The ideal candidate will have experience with languages like C, C++, Zig, Go, or Rust, and a deep understanding of manual memory management in large codebases.

Systems Engineer position at Bun, working on open-source JavaScript tooling and infrastructure in San Francisco, focusing on low-level systems programming and performance optimization.

Bun Engineering Jobs

An open-source JavaScript tooling company focused on making programming simpler, backed by $26M in funding.