Senior Web Engineer Job at 10up

Senior Web Engineer

At Fireworks, we’re building the future of generative AI infrastructure. Our pla...

Location

United States , San Mateo

Salary:

180000.00 - 220000.00 USD / Year

Fireworks AI

Expiration Date

Until further notice

Requirements

4+ years of web development experience, with at least 2 years in a marketing or GTM organization
Strong command of front-end technologies (HTML, CSS/SCSS, JS/React/Next.js or similar frameworks)
Experience working with CMSs (e.g. headless, Contentful, Sanity) and integrating with marketing tools (HubSpot, Segment, Google Analytics, etc.)
Track record of launching fast, beautiful, scalable websites on tight timelines
Comfortable managing web vendors and ensuring delivery quality
Pragmatic mindset - able to trade perfection for speed without sacrificing integrity
Demonstrated “builder” mentality: self-motivation, excels at establishing processes, scaling programs, and bringing ideas to life
Excellent organizational, time management, and communication and influencing skills
Ability frequently travel for on-site event coordination
Exceptional attention to detail, commitment to excellence

Job Responsibility

Create. Work across the marketing team to plan remarkable web experiences that represent the Fireworks brand and stand out
Build. Develop performant, responsive, and accessible front-end code that brings brand and campaigns to life across Fireworks.ai web properties
Integrate. Connect the website to the broader marketing tech stack - HubSpot, analytics, AB testing, and product telemetry - ensuring smooth data flow and signal integrity
Collaborate. Translate marketing priorities into actionable engineering plans
partner with designers, content creators, and campaign owners to ship quickly and effectively

What we offer

meaningful equity in a fast-growing startup
competitive salary
comprehensive benefits package

Fulltime

Senior Web Engineer

Your mission is to architect the foundational systems that power dynamic, large-...

Location

Salary:

Not provided

10up

Expiration Date

Until further notice

Requirements

Deep passion for pushing WordPress to its limits
Expert-level mastery in modern PHP
Sophisticated understanding of the Gutenberg ecosystem
GitHub filled with real-world WordPress code demonstrating ability to build elegant, scalable solutions
Strategic partner and communicator, comfortable leading technical discussions with clients
Master of the back-end development lifecycle
Extensive Git workflow experience
Proven ability to expertly debug and optimize complex systems
Thrive on a distributed team, proactively collaborating and leading from a remote location

Job Responsibility

Architect and build the core of enterprise-level WordPress solutions, developing high-performance plugins and themes with modern PHP and sophisticated Gutenberg blocks in React.js
Define the back-end technical vision and strategy for large-scale projects, making critical decisions on architecture, performance, and scalability
Elevate the entire team's output by providing expert code reviews that champion code quality, security, and maintainability
Solve complex performance and caching challenges, transforming slow, brittle systems into fast, resilient platforms that can handle millions of visitors
Create the tools and systems that power digital experiences for a global audience

What we offer

Opportunity to explore a transition into full-time roles when fit and business needs align
Access to project invitations tailored to your expertise and availability

Senior Web Backend Engineer

Location

Japan , 東京23区

Salary:

5000000.00 - 7500000.00 JPY / Year

Randstad

Expiration Date

May 11, 2027

Requirements

Bachelor's degree in CS or equivalent practical experience
Proven experience in Python 3 and Python web frameworks
Experience in quality assurance and automated testing
Database design experience using PostgreSQL or similar RDBMS
Fluent-level Japanese (N1 level required)

Job Responsibility

2 days WFH Style

What we offer

健康保険
厚生年金保険
雇用保険

Fulltime

Senior Software Engineer, Web Capture

As a Fullstack Web SDK Engineer on the Web Capture team, you’ll help build and e...

Location

United States , Atlanta

Salary:

145000.00 - 170000.00 USD / Year

Fullstory

Expiration Date

Until further notice

Requirements

Proven experience developing and maintaining production-grade JavaScript or TypeScript libraries or SDKs, ideally consumed by third-party applications or developers
Demonstrated ability to work with browser APIs, DOM behavior, and rendering engines to solve complex technical challenges across different environments
Hands-on experience building modern web applications with React, including knowledge of performance tuning and component design
Backend development experience in a production environment using Go or Node.js (or similar languages), especially in support of fullstack feature development
A track record of collaborating cross-functionally to scope projects, meet deadlines, and deliver solutions that directly impact product adoption and customer satisfaction
Leverage AI tools to enhance work quality and accelerate timelines by implementing AI solutions that optimize efficiency

Job Responsibility

Engineer performant, reliable features in our web SDK using TypeScript—ensuring the accurate capture of user sessions across browsers and frameworks
Contribute to our React-based Playback graphics app, using deep knowledge of browser behavior and canvas rendering
Collaborate with backend engineers to design and build Go-based services that support new capture and analysis capabilities
Troubleshoot cross-browser inconsistencies and edge cases
Partner with stakeholders across Product, Design, and Support to scope work effectively
Participate in technical planning and code reviews

What we offer

flexible PTO policy
annual company-wide closure
federal holidays
sponsored benefit packages for US-based Fullstorians (medical, dental, vision)
supplemental coverage options for international Fullstorians
professional development opportunities through training programs
annual learning subsidy for US and EMEA-based employees
monthly productivity stipend for US and EMEA-based Fullstorians
team off-sites
annual full-company meet-up

Fulltime

Senior Software Engineer - Web Shared UX

The Web Shared UX team builds the foundational front‑end experiences that power ...

Location

United States , Redmond

Salary:

119800.00 - 234700.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience
4+ years of experience with React and modern web development
Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings: Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter
Master's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelor's Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience
Experience in building highly available systems at scale
4+ years of experience with React and TypeScript in production applications
4+ years of experience building and maintaining shared libraries or component systems
Experience with web accessibility standards (WCAG, ARIA) and building accessible components
Experience with initial component development through to production deployment
Experience in leveraging AI to increase development productivity

Job Responsibility

Build, ship, and maintain front‑end UX features and shared components for Copilot experiences across Microsoft 365 on the web
Leverage and contribute to Fluent UI and other shared UX libraries, ensuring consistency, accessibility, and high visual quality across surfaces
Partner closely with Design and Product Management to translate designs and product intent into high‑quality, production‑ready experiences
Collaborate with engineers across Office Shared and app teams to integrate shared UX systems into partner workflows
Write clean, maintainable, and well‑tested code, with attention to performance, reliability, and long‑term ownership
Participate in the team’s DRI/on‑call rotation, helping ensure the health, availability, and fast recovery of shared web experiences
Contribute to a culture of engineering excellence, thoughtful code reviews, and continuous improvement
Embody the Microsoft culture and values

Fulltime

Senior Embedded Web Engineer

The Community Tech team builds the bridge between millions of players and the te...

Location

Finland , Helsinki

Salary:

Not provided

Supercell

Expiration Date

Until further notice

Requirements

Deep understanding of web technologies, from browser fundamentals to service architecture, and a proven ability to look beyond frameworks to how things actually work
Experience with technical leadership and/or product ownership, familiarity with digital product development is essential
Experience delivering precise, polished web frontend experiences, in tight collaboration with design, that run on a wide variety of devices and platforms
Previous experience in writing scalable backends for web applications
Experience with container orchestration such as Amazon ECS
Experience writing infrastructure as code (eg. Terraform)
Experience or willingness to learn C++ and game development
Entrepreneurial mindset (self-motivated, tenacious, resourceful, no handbook necessary)
Passion for games and online communities around games
A self-starter approach to use AI: you've found ways to use it in your day-to-day work, you experiment, figure things out and bring the same energy to every new challenge.

Job Responsibility

Build and ship player-facing web experiences delivered through in-game webviews, community events, community integrations, polls, activations, and more
Work embedded within game teams, getting involved early in event design conversations, not just at the build stage, to bring cross-game learnings and a technical perspective that makes everything better
Develop reusable tooling and event templates that make every future activation faster to ship and less risky to run
Build on and help evolve Community Tech services like Spellfactory and the Poll API, acting as the bridge between game teams and central Community Tech
Flag scope and timeline risks early, and be a constructive voice in scoping conversations when timelines are tight
Monitor live events and respond quickly when issues arise
communicate clearly about what is happening and how it's being resolved
Proactively surface ideas: new event formats, tooling improvements, and ways to integrate marketing initiatives more deeply inside the game
Contribute to the Community Hub product, helping move features over the finish line as the product grows
Open communication with game team members to learn pain points and opportunities for our web technology, sharing what you learn with our central team

Fulltime

Senior Software Engineer - Web Data Platform

We are looking for a highly motivated and experienced platform engineer to join ...

Location

China , Beijing

Salary:

Not provided

Microsoft Corporation

Expiration Date

Until further notice

Requirements

Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
OR equivalent experience
Solid foundation in distributed systems, concurrency, networking, and system design
Excellent communication, collaboration, and problem‑solving skills
Fluency in English (spoken and written)
Ability to meet Microsoft, customer and/or government security screening requirements are required for this role
These requirements include but are not limited to the following specialized security screenings: Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter

Job Responsibility

Design and architect large‑scale distributed pipelines to ensure scalability, robustness, performance, and cost efficiency
Implement new features and system improvements in highly distributed, parallelized environments, using data to measure and validate impact
Develop and maintain comprehensive test coverage, including unit, integration, and performance tests, ensuring production-grade reliability
Debug, triage, and mitigate issues in live production environments handling massive data flows
Continuously improve the system architecture, proposing and driving enhancements based on industry best practices and emerging technologies
Collaborate cross‑functionally with engineers, PMs, and partner teams to align technical execution with business and product objectives
Contribute to engineering excellence, operational rigor, and incident‑free execution for mission‑critical pipelines that support Bing’s web data ecosystem

Fulltime

Senior Software Engineer, Web Capture

As a Fullstack Web SDK Engineer on the Web Capture team, you’ll help build and e...

Location

United States , Atlanta

Salary:

145000.00 - 170000.00 USD / Year

Fullstory

Expiration Date

Until further notice

Requirements

Proven experience developing and maintaining production-grade JavaScript or TypeScript libraries or SDKs, ideally consumed by third-party applications or developers
Demonstrated ability to work with browser APIs, DOM behavior, and rendering engines to solve complex technical challenges across different environments
Hands-on experience building modern web applications with React, including knowledge of performance tuning and component design
Backend development experience in a production environment using Go or Node.js (or similar languages), especially in support of fullstack feature development
A track record of collaborating cross-functionally to scope projects, meet deadlines, and deliver solutions that directly impact product adoption and customer satisfaction

Job Responsibility

Engineer performant, reliable features in our web SDK using TypeScript—ensuring the accurate capture of user sessions across browsers and frameworks
Contribute to our React-based Playback graphics app, using deep knowledge of browser behavior and canvas rendering to deliver high-fidelity session visualizations that customers trust
Collaborate with backend engineers to design and build Go-based services that support new capture and analysis capabilities, keeping performance and scalability top of mind
Troubleshoot cross-browser inconsistencies and edge cases, ensuring a stable and consistent experience for all users
Partner with stakeholders across Product, Design, and Support to scope work effectively, deliver on time, and contribute to a seamless customer experience
Participate in technical planning and code reviews, bringing your expertise in web performance, browser internals, and fullstack development to guide team success and technical quality

What we offer

Flexibility and Connection
Flexible PTO policy
Annual company-wide closure
Federal holidays
Sponsored benefit packages for US-based Fullstorians
Supplemental coverage options for international Fullstorians
Professional development opportunities
Annual learning subsidy for US and EMEA-based employees
Monthly productivity stipend for US and EMEA-based Fullstorians
Team Collaboration through team off-sites and an annual full-company meet-up

Fulltime

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Senior Web Engineer

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Senior Software Engineer, Web Capture

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