Open Source JobHub
  • Jobs
  • Companies
  • Employer Quick Start
  • About Us
  • Blog
  • Sign in
  • Sign up
  • Jobs
  • Companies
  • Employer Quick Start
  • About Us
  • Blog

9 senior application engineer jobs found

Refine Search
Current Search
senior application engineer
Mattermost
13 Apr, 2026
Senior React Platform Engineer
Mattermost
Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. Trusted by the U.S. Department of War and Fortune 500s, our platform runs on-premises and in private clouds, delivering secure messaging, file sharing, workflow automation, audio/screenshare, and project management—all with full data and operational control. Mattermost powers high-stakes workflows across mission planning, real-time, real-world operations, DevSecOps, incident response, and cyber defense—enabling secure collaboration from tactical edge and DDIL environments to enterprise HQ. Teams operate across web, desktop, and mobile, with embedded interoperability for Microsoft Teams, Outlook, and Microsoft 365. To learn more, visit  www.mattermost.com Mattermost is looking for a Senior React Platform Engineer to help us redefine the limits of web application performance and reliability. You will join the Core Web team to lead the evolution of our...
Automattic
27 Mar, 2026
Forward Deployed Engineer
Automattic Remote
Forward Deployed Engineer (WordPress VIP Customer Engineering & Architecture) At WordPress VIP (part of Automattic ), we power the most influential properties on the web, from the White House to Meta and Salesforce. We are looking for a Forward Deployed Engineer (FDE) to join our mission in redefining how the world’s largest enterprises scale. This isn't your typical engineering role; it’s an advanced, consultative position where you operate as a hands-on architect and a growth catalyst. As an FDE, you are the front line of trust, embedded with our most strategic customers to solve high-stakes technical challenges in real-time. By combining engineering excellence with deep customer proximity, you won’t just solve problems for customers, you’ll solve them with them, driving business expansion across the world’s most scaled environments. If you thrive in high-impact, ambiguous environments and want to help define the future of open-source technology at the...
CloudBees Inc
27 Mar, 2026
Sr. Security Operations Engineer
CloudBees Inc United Kingdom
  Job Title: Senior SOC Engineer Employment Type: Full-time Work Location: Remote - UK or Ireland About CloudBees CloudBees provides the leading software delivery platform for enterprises, enabling them to continuously innovate, compete, and win in a world powered by the digital experience. Designed for the world's largest organizations with the most complex requirements, CloudBees enables software development organizations to deliver scalable, compliant, governed, and secure software from the code a developer writes to the people who use it. The platform connects with other best-of-breed tools, improves the developer experience, and enables organizations to bring digital innovation to life continuously, adapt quickly, and unlock business outcomes that create market leaders and disruptors. CloudBees was founded in 2010 and is backed by Goldman Sachs, Morgan Stanley, Bridgepoint Credit, HSBC, Golub Capital, Delta-v Capital, Matrix Partners, and Lightspeed Venture...
Mattermost
13 Apr, 2026
Staff Software Engineer, Testing Infrastructure
Mattermost
Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. Trusted by the U.S. Department of War and Fortune 500s, our platform runs on-premises and in private clouds, delivering secure messaging, file sharing, workflow automation, audio/screenshare, and project management—all with full data and operational control. Mattermost powers high-stakes workflows across mission planning, real-time, real-world operations, DevSecOps, incident response, and cyber defense—enabling secure collaboration from tactical edge and DDIL environments to enterprise HQ. Teams operate across web, desktop, and mobile, with embedded interoperability for Microsoft Teams, Outlook, and Microsoft 365. To learn more, visit  www.mattermost.com Mattermost is seeking a visionary Staff Software Design Engineer (SDE) in Testing Infrastructure to lead a company-wide transformation of test automation and quality engineering . In this highly...
Mattermost
13 Apr, 2026
Lead Site Reliability Engineer
Mattermost
Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. Trusted by the U.S. Department of War and Fortune 500s, our platform runs on-premises and in private clouds, delivering secure messaging, file sharing, workflow automation, audio/screenshare, and project management—all with full data and operational control. Mattermost powers high-stakes workflows across mission planning, real-time, real-world operations, DevSecOps, incident response, and cyber defense—enabling secure collaboration from tactical edge and DDIL environments to enterprise HQ. Teams operate across web, desktop, and mobile, with embedded interoperability for Microsoft Teams, Outlook, and Microsoft 365. To learn more, visit  www.mattermost.com Mattermost is seeking an experienced and visionary Lead Site Reliability Engineer (SRE) to guide the architecture, reliability, and operational excellence of the infrastructure powering our...
Mattermost
13 Apr, 2026
Senior React Native Engineer
Mattermost
Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. Trusted by the U.S. Department of War and Fortune 500s, our platform runs on-premises and in private clouds, delivering secure messaging, file sharing, workflow automation, audio/screenshare, and project management—all with full data and operational control. Mattermost powers high-stakes workflows across mission planning, real-time, real-world operations, DevSecOps, incident response, and cyber defense—enabling secure collaboration from tactical edge and DDIL environments to enterprise HQ. Teams operate across web, desktop, and mobile, with embedded interoperability for Microsoft Teams, Outlook, and Microsoft 365. To learn more, visit  www.mattermost.com Mattermost is seeking a Senior React Native Engineer to join our mobile engineering team and build resilient mobile experiences for mission-critical industries like defense, intelligence, and critical...
Automattic
27 Mar, 2026
Applied AI Engineer, Internal Tooling - New York
Automattic Remote
Location: NYC NoHo Office (5 days a week) About This Opportunity Build the AI tools that Automattic uses internally. Maintain and extend LibreChat, our self-hosted AI interface. Create lightweight integrations and automations that make teams more productive. Help 1,500 people work better with AI. This isn’t about building consumer products or shipping to millions of users. It’s about building tools for the people sitting next to you, getting immediate feedback, and iterating based on what actually helps. If you’ve ever wished you could control your own AI tools, customize them exactly how you want, and not be at the mercy of third-party vendors, this is that opportunity. You’ll work in-person with our NYC AI team while your tools serve Automattic’s distributed organization globally. Why This Role Matters Most companies are locked into third-party AI tools: ChatGPT, Claude, whatever comes next. They’re stuck with whatever features the vendor ships, whatever...
Solo.io
27 Mar, 2026
Senior AI Software Engineer
Solo.io
Who we are. Solo empowers teams to build and scale their AI infrastructure using cloud-native tech. Most companies have shifted from asking 'How can we make AI useful?' and are instead now asking 'How do we take our AI projects to production?'. A recent MIT study reveals a shocking 95% of GenAI projects never make it there or fail to deliver positive ROI. At Solo, our AI initiatives are helping teams bridge that gap from pilot to production. With our roots in critical cloud infrastructure (gateways, proxies, service mesh) trusted by Fortune 500s, Solo is uniquely positioned to lead AI's next wave. As a nimble startup, we innovate faster, our engineers contribute to high-impact OSS (we're a top CNCF contributor) and solve real scalability challenges. Solo is a VC-backed company, founded in 2017 by Idit Levine. In 2021, Solo was valued at $1B. Solo’s customers are some of the largest in the world, spanning all geographies and industries. Solo’s team has deep expertise in...
Builder.io
27 Mar, 2026
Senior Analytics Engineer
Builder.io North America
About the Role We are looking for a builder who speaks the language of business. We need a Senior Analytics Engineer to own the data architecture and modeling that powers our Finance, RevOps, and Executive decision-making. In this role, you will sit at the intersection of Data Engineering and Business Intelligence. You won’t just be moving data from point A to point B; you will be responsible for designing the "logic layer" of our business. You will work directly with stakeholders to understand business problems and engineer the systems that make that data accurate, accessible, and reliable. You understand that a "churn" metric isn't just a number; it's a specific business definition that needs to be modeled accurately and exposed seamlessly in internal customer facing BI tools like Sigma for stakeholders. As a Senior Analytics Engineer you will be responsible for… Data Modeling & Systems Design Own the design and maintenance of our Data Warehouse. Build...
  • Home
  • Contact
  • About Us
  • Sponsors
  • Blog
  • In the News
  • Terms & Conditions
  • Privacy Policy
  • Employer
  • Employer Quickstart Guide
  • Post a Job
  • Pricing
  • Sign in
  • Job Seeker
  • Find Jobs
  • Create Resume
  • Sign in
  • LinkedIn
  • Follow us on Mastodon  mastodon
  • Facebook
  • Follow us on Bluesky  Bluesky
© 2026 Powered by Linux New Media USA, LLC