> Markdown version of [/jobs/ext/2001484-senior-javascript-middleware-engineer](https://www.wearedevelopers.com/jobs/ext/2001484-senior-javascript-middleware-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Javascript Middleware Engineer - **Company:** Lifesize, Inc. - **Location:** Austin, TX, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Microsoft Windows, Amazon Web Services, Apple IOS, Unit Testing, Cascading Style Sheets (CSS), Cloud Computing, Code Review, Databases, Continuous Integration, Data Stores, Software Debugging, Amazon DynamoDB, Middleware, Node.Js, Preprocessor, Software Engineering, TypeScript, WebSocket, WebRTC, Javascript Build, ReactJS, AWS Lambda, Backend, Git, Webpack, Information Technology, Npm(Software), React Native, Front End Software Development, React Redux, Restful APIs, Es2015, Network Server, Microservices - **Published:** August 9, 2026 - **Apply:** https://www.wayup.com/i-j-lifesize-476490301418028/ ## About the Role 6+ Years Software Development (both clients & servers) 2+ Years Modern JavaScript (ES6+) 1+ Years NodeJS 1+ Years React/Redux IDEALLY, YOU WILL… + Understand the redux pattern including where and how to apply it. + Be an expert at working with websockets from a client or server perspective. + Be an expert at consuming REST services and dealing with error cases. + Be fluent in JavaScript build tools like npm, Webpack, Babel, CSS preprocessors, and unit testing frameworks like Jest. + Be comfortable digging into server source code to help debug issues while implementing the client middleware. + Have experience designing and using databases for server and client applications. + Collaborate with team members and mentor other team members when the opportunity arises. + Have excellent troubleshooting skills, familiarity with test tools, and a drive to quickly fix customer issues. + Be adaptable to work between multiple projects and technologies within a condensed time frame. + Be comfortable working with Git in a continuous integration environment. + Offer constructive feedback during code reviews as well as positively receiving and executing on the feedback offered by others. + Be capable of driving towards a goal independently with minimal oversight. + Have a Bachelor's Degree in Computer Science, related field, or equivalent real world experience. YOU'LL IMPRESS US EVEN MORE IF YOU HAVE EXPERIENCE WITH SOME OF THESE: + WebRTC + TypeScript + AWS (particularly Lambdas and DynamoDB) + React Native (or similar mobile framework) + Electron + Native Mobile (iOS or Android) + Native Desktop (Windows or Mac) + Experience building microservices ## Description WOULD YOU LIKE TO WORK ON A HIGH PERFORMING TEAM USING THE LATEST TECHNOLOGIES TO DEVELOP A LIBRARY THAT DRIVES OUR CORE CLOUD FUNCTIONALITY USED BY OUR NEXT GENERATION VIDEO COMMUNICATION PRODUCTS? Lifesize is looking for an expert developer with a broad set of experience to join the team which is architecting the shared middleware that is used as the datastore and server communication layer in all of our new clients: desktop, mobile, web, and custom endpoints. As part of this team, you'll be building the glue layer between our client and server infrastructure. Working on this layer will require you to become familiar with our entire backend and frontend architecture. ABOUT THIS ROLE: + You'll extend and maintain the Redux middleware library used by our next generation applications. + You'll write readable, well-tested JavaScript code in a team of engineers who are working to continuously improve the codebase. + You'll improve the overall build, packaging, automation, and distribution process. + You'll engage and coordinate with other internal engineering teams to complete complex product features. + You'll solve high priority customer issues and get fixes deployed with a fast turnaround time. SOME OF THE PERKS YOU'LL GET WORKING IN LIFESIZE ENGINEERING: + Pick your preference of a Mac or PC environment, and we'll get you hooked up. + Come to work in our convenient Barton Skyway location, which is close enough to downtown and Zilker Park to have access to the best of Austin. + Be amazed at the programming flow time you'll establish in our non-open engineering floor plan, which includes a mix of private and shared offices. + Take time off when you need it with our unlimited vacation policy and our flexible work schedule. + Eat free breakfast tacos on Mondays and Wednesdays and enjoy a catered lunch on Tuesdays and Thursdays. + Take a break in our fully stocked break rooms with all the snacks and drinks you need. + Recharge yourself in our free onsite yoga classes and gym. ## Related Videos - [But, you're not Facebook](https://www.wearedevelopers.com/videos/378-but-you-re-not-facebook) - [Transforming Education: A Journey from interactive Markdown to Remote-Labs](https://www.wearedevelopers.com/videos/941-transforming-education-a-journey-from-interactive-markdown-to-remote-labs) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Hello JARVIS - Building Voice Interfaces for Your LLMS](https://www.wearedevelopers.com/videos/1641-hello-jarvis-building-voice-interfaces-for-your-llms) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) ## Related Articles - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [The Best JavaScript Framework to Learn](https://www.wearedevelopers.com/magazine/229-the-best-javascript-framework-to-learn) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Dev Digest 136 - No JS(on) of mine](https://www.wearedevelopers.com/magazine/482-dev-digest-136-no-js-on-of-mine)