Software Development Engineer III, GL-JS, Maps Rendering

Mapbox, Inc.

Job Overview

Location

Mapbox Helsinki

Job Type

Full-time

Full Job Description

📋 Description

• As a Software Development Engineer III on the Maps Rendering team at Mapbox, you will lead the evolution of Mapbox GL JS — the industry’s leading open-source map rendering engine that powers interactive, real-time maps for millions of users worldwide. Your work will directly impact how developers build location-aware applications, enabling richer, faster, and more immersive experiences across web platforms.
• You will drive technical excellence by architecting and implementing high-performance rendering features using WebGL, WebGPU, Web Workers, TypeScript, and WebAssembly, while collaborating cross-functionally with product, design, and native engineering teams to ensure consistency and innovation across Mapbox’s entire stack.
• The Maps Rendering team is a small, elite group of graphics and systems engineers passionate about pushing the boundaries of browser-based visualization. You’ll join a culture that values deep technical curiosity, ownership, and mentorship, where your contributions will shape the future of interactive mapping at scale.
• In this role, you’ll deepen your expertise in real-time graphics pipelines, large-scale data visualization, and modern web performance optimization — gaining visibility into cutting-edge browser technologies and influencing open-source standards used by over 4 million developers globally.
• You’ll lead complex technical initiatives from concept to production, mentoring junior engineers, improving code maintainability and test coverage, and advocating for best practices in graphics architecture and algorithmic efficiency.
• You’ll partner closely with Mobile and Native rendering teams to harmonize rendering behavior across platforms, ensuring pixel-perfect, performant experiences whether users are on web, iOS, Android, or embedded devices.
• You’ll contribute to Mapbox GL JS’s public GitHub repository, engaging with the global open-source community through issue triage, code reviews, and feature discussions — amplifying your impact beyond Mapbox’s walls.
• You’ll help define the technical roadmap for next-generation map rendering, exploring emerging technologies like WebGPU compute shaders, GPU-driven rendering, and adaptive level-of-detail systems to keep Mapbox at the forefront of location innovation.

🎯 Requirements

• Expert-level proficiency in TypeScript and modern JavaScript (ES6+), with proven experience building and maintaining large-scale web applications.
• Deep expertise in WebGL or similar graphics APIs (OpenGL, Vulkan, Metal), including shader programming, texture management, and render loop optimization.
• Strong background in algorithms, data structures, and performance optimization — particularly in real-time or graphics-intensive systems.
• Experience with WebAssembly, Web Workers, or other web performance technologies to offload heavy computation from the main thread.
• Proven ability to lead technical projects, collaborate effectively in distributed, cross-functional teams, and communicate complex ideas clearly to engineers and non-engineers alike.
• Track record of contributing to or maintaining open-source software, with familiarity in GitHub workflows, code review practices, and community engagement.

🏖️ Benefits

• Competitive salary and equity compensation aligned with market benchmarks for senior engineering roles.
• Comprehensive health, dental, and vision insurance, plus mental health resources and wellness stipends.
• Generous parental leave policy (20+ weeks for all parents), flexible vacation, and unlimited sick days.
• Annual learning and development budget for conferences, courses, certifications, or books.
• Remote-first work culture with stipend for home office setup and co-working space access.
• Equity participation in a fast-growing, mission-driven company shaping the future of location technology.
• Regular team offsites and virtual events fostering connection and collaboration across global teams.
• Access to cutting-edge hardware and software tools, including latest GPUs, browsers, and rendering frameworks for experimentation.

Skills & Technologies

JavaScript

TypeScript

GitHub

Remote

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Mapbox, Inc.

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About Mapbox, Inc.

Mapbox provides cloud-based mapping, geocoding, navigation, and spatial data infrastructure through APIs and SDKs. Developers embed live maps, search, turn-by-turn directions, and data visualization into mobile, web, and automotive applications. The platform ingests and updates petabytes of global imagery, traffic, and movement data to deliver real-time location services for logistics, automotive, travel, and consumer apps.

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