Site Engineer

Protex AI

Protex AI is the AI Safety and Operations Intelligence Company. At Protex AI, we are at the forefront of AI-driven computer vision, building a safer, smarter industrial workplace with an intelligent operating system that redefines how facilities operate. Backed by top-tier global investors, we recently secured a $36 million Series B to accelerate our mission. Industry leaders like DHL, Amazon, and Tesla trust Protex AI to drive measurable safety improvements, achieving an average 64% risk reduction within just three months of deployment. Operating in 20+ countries, Protex is the go-to safety partner for Fortune 500 manufacturing and logistics enterprises, transforming workplace safety with real-time, AI-powered insights. ABOUT THE TEAM The Infrastructure Team builds and maintains the core foundation that powers all Protex systems, ensuring scalable data infrastructure, robust edge-to-cloud connectivity, and high-performance backend services. We support edge deployments for real-time computer vision applications and deliver resilient systems to enable proactive workplace safety at global scale. Within Infrastructure, this role sits at the intersection of systems administration, edge device operations, networking, and security, owning the layer between our cloud platform and the thousands of cameras and edge compute units running on customer sites across the world. ABOUT THE ROLE We're looking for a Site Reliability Engineer, Networking focussed, to own how Protex devices are provisioned, accessed, secured, and kept healthy in the field. You'll be the technical lead for our remote access stack, OS lifecycle on the edge, fleet-wide patching and upgrades, endpoint security tooling, and the networking posture we present to some of the most security-conscious enterprises in the world. You'll work directly with Infrastructure, Edge Engineering, IT, and customer security teams at Fortune 500 logistics and manufacturing companies. The decisions you make show up in customer security reviews, in the way our devices land on a new site, and in how quickly we can respond when something goes wrong at 3am in a warehouse on the other side of the world. This is a hands-on role with a lot of surface area. You'll be expected to build, document, and operate, and to raise our security bar without slowing the field team down. WHAT YOU'LL OWN * Remote access - Run and evolve our remote access fabric for edge devices. Evaluate and roll out alternative access architectures (outbound-only relays, on-demand session models, hardware-based options) to meet the security requirements of customers who can't accept the default approach. * Edge security & endpoint protection - Deploy and operate security monitoring tools across remote devices via our existing device management platform. Manage sensor policy, vulnerability scanning cadence, the firewall and endpoint documentation we share with customers, and the edge-compute performance budget we're willing to spend on security tooling. * OS lifecycle - Own OS updates, upgrades, and kernel/driver compatibility across the fleet. Lead evaluation and migration work when we need to move to a more enterprise-grade base OS, including compatibility testing across our video analytics stack, GPU drivers, and device management agents. * Provisioning from get-go - Design how a brand-new Protex device goes from box to production: zero-touch or low-touch imaging, identity, secrets, certificates, remote access enrolment, device management registration, and first-boot validation. The bar is "an installer on a customer site can do it in minutes, every time." * Networking & customer security posture - Maintain the firewall, port, and endpoint documentation we hand to customer IT and security teams. Be the technical voice in customer security reviews. Help close audits and procurement security questionnaires. * Systems administration - Internal Linux infrastructure, identity, SSO, MDM where relevant, and the day-to-day systems work that keeps the engineering org and the fleet running. WHAT YOU’LL NEED * 5+ years of professional experience in systems administration, infrastructure, security engineering, or a similar hands-on operations role * Strong Linux fundamentals - including package management, init systems, networking, kernel/driver troubleshooting, and OS upgrade paths * Experience operating a fleet of Linux devices in the field (not just servers in a data centre) - remote management, patching, observability, recovery * Bachelor's degree in Computer Science, Engineering, or a related field * Hands-on experience with a mesh/VPN or zero-trust remote access solution * Solid networking knowledge: TCP/IP, DNS, NAT/firewalls, outbound-only architectures, certificate handling, and how to explain all of the above to a customer's security team * Experience deploying and operating endpoint security and vulnerability scanning tools at scale * Experience with a major public cloud provider, particularly the compute, identity, monitoring, and edge/IoT services * Proficiency coding in Python - comfortable writing automation, tooling, and small services rather than only shell one-liners * Additional scripting and automation skills (Bash or similar) to make manual fleet operations go away * A security mindset - secrets management, least privilege, threat modelling, and an instinct for what a customer security reviewer is going to ask * Mindset: * Owns their work end-to-end: planning, delivery, documentation, and cooperation across teams * Helpful and responsive - willing to jump on a field issue with urgency when an edge device or a customer is impacted * Bias to write things down so the next person doesn't have to ask NICE TO HAVE * Experience with AWS security services * Experience with managed edge / IoT deployment platforms and remote component delivery * Experience working with edge GPU hardware and GPU-accelerated inference pipelines * Experience supporting SOC 2, ISO 27001, or similar compliance programs from the infrastructure side * Experience responding to enterprise customer security reviews at Fortune 500 scale * Experience with MDM or device fleet management tooling WHY JOIN US At Protex AI, you'll work on cutting-edge problems with a mission-driven team. You'll have ownership, autonomy, and the opportunity to make a tangible impact on workplace safety around the world. This role in particular gives you a clean slate over the edge security and remote access story for a fleet that's already deployed across 20+ countries - the work you do will show up in every customer security review we run. Protex AI is an inclusive and equal opportunities employer. We are committed to creating an equitable workplace for everyone regardless of gender, civil status, family status, sexual orientation, religion, age, disability, education level, or race.

Mongodb

MongoDB’s mission is to empower innovators to create, transform, and disrupt industries by unleashing the power of software and data. We enable organizations of all sizes to easily build, scale, and run modern applications by helping them modernize legacy workloads, embrace innovation, and unleash AI. Our industry-leading developer data platform, MongoDB Atlas, is the only globally distributed, multi-cloud database and is available in more than 115 regions across AWS, Google Cloud, and Microsoft Azure. Atlas allows customers to build and run applications anywhere—on premises, or across cloud providers. With offices worldwide and over 175,000 new developers signing up to use MongoDB every month, it’s no wonder that leading organizations, like Samsung and Toyota, trust MongoDB to build next-generation, AI-powered applications. The Site Reliability Engineering team designs and builds the global infrastructure on which we deploy our services, focusing on the above mentioned flagship MongoDB Atlas platform. As our customers grow and globalize, our services must satisfy demands for low-latency requests around the globe, and comply with various data sovereignty requirements. The SRE Team’s mission is to build this increasingly complex infrastructure, while continually lowering the operational burden associated with it, and increasing our internal visibility into the health of the system. We are strong believers in infrastructure-as-code and self-healing systems. The SRE Team is fully integrated with all the other engineering teams, and the teams work closely together with a soft and traversable boundary between their areas of responsibility. We are looking to speak to candidates who are based in Dublin for our hybrid working model. RESPONSIBILITIES * Design and build the infrastructure for a global cloud service that comprises hundreds of thousands of MongoDB clusters, processes a billion metrics per day, and replicates tens of billions of database writes to our backup service * Design, implement, and troubleshoot the automation and monitoring of services that seamlessly spans the globe - including several cloud providers * Become an expert in infrastructure performance, helping us optimize from the application level all the way through the firmware * Build for resilience. Our goal is that nobody’s pager goes off, ever. Are we there yet? No. Are we really close? Very. While we work on that - participate in a weekly on-call rotation * Improve our infrastructure capabilities, optimizing for cost, simplicity, and maintainability REQUIREMENTS * 3+ years of experience running a mission critical service at scale in a Linux environment * Firm grasp of at least one modern programming language, beyond basic scripting * Familiarity with web and network protocols and standards (HTTP, TLS, DNS, etc) * Bachelor’s degree in Computer Science or equivalent experience * Experience writing automation tools & eagerness to "automate all the things" NICE TO HAVE * Experience building large applications from scratch, complete with CI/CD infrastructure * Experience in networking, security, hardware or OS performance tuning * Experience with at least one of the major cloud providers (Amazon Web Services, Google Compute, Microsoft Azure) * Experience managing kubernetes clusters or some other container orchestration infrastructure * Experience with observability of large scale distributed systems ABOUT MONGODB MongoDB is built for change, empowering our customers and our people to innovate at the speed of the market. We have redefined the data platform for the AI era, enabling builders to create, transform, and disrupt industries with software. MongoDB’s unified data platform, the most widely available, globally distributed data platform on the market, helps organizations modernize legacy workloads, embrace innovation, and unleash AI. Our cloud-native platform, MongoDB Atlas, is the only globally distributed, multi-cloud data platform and is available across AWS, Google Cloud, and Microsoft Azure. With offices worldwide and over 67,000 customers, including 75% of the Fortune 100 and AI-native startups, relying on MongoDB for their most important applications, we’re powering the next era of software. Our compass at MongoDB is our Leadership Commitment, guiding how and why we make decisions, show up for each other, and win. It’s what makes us MongoDB.  To drive the personal growth and business impact of our employees, we’re committed to developing a supportive and enriching culture for everyone. From employee affinity groups, to fertility assistance and a generous parental leave policy, we value our employees’ wellbeing and want to support them along every step of their professional and personal journeys. Learn more about what it’s like to work at MongoDB, and help us make an impact on the world! MongoDB is committed to providing any necessary accommodations for individuals with disabilities within our application and interview process. To request an accommodation due to a disability, please inform your recruiter. MongoDB is an equal opportunities employer. Req ID: 3263213607

Reddit

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 126 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com. As Reddit continues to scale globally, reliability and performance are more critical than ever. The Site Experience SRE team sits at the intersection of infrastructure, product engineering, and user experience - ensuring that every interaction across web, mobile, APIs, feeds, media delivery, and real time systems is fast, reliable, and resilient. We are looking for a Staff Site Reliability Engineer to lead reliability engineering initiatives for critical user facing systems at internet scale. In this role, you will partner closely with product and infrastructure teams to improve availability, latency, scalability, and operational excellence across Reddit’s most business critical experiences. This is a highly technical leadership role for someone who thrives in large-scale distributed systems, enjoys solving complex reliability challenges, and can influence engineering culture across the organization. WHAT YOU’LL DO: * Lead Reliability Engineering for User Experience * Drive reliability, scalability, and operational excellence for critical user facing systems and services. Improve performance and resiliency across APIs, content delivery, feed generation, search, messaging, and real-time experiences. * Architect for Scale * Partner with product and infrastructure engineering teams to design systems that remain highly available and performant under massive global load. Guide architectural decisions around failover, redundancy, graceful degradation, traffic management, and capacity planning. * Reduce Operational Risk * Identify systemic risks and reliability bottlenecks across services, dependencies, deployments, and infrastructure. Build proactive mitigation strategies and drive engineering improvements that reduce incidents and improve service health. * Drive Automation * Eliminate repetitive operational work through automation and tooling. Build systems that improve deployment safety, incident response, remediation workflows, and reliability guardrails * Incident Management * Lead complex incident response efforts across engineering teams. Drive blameless postmortems, identify root causes, and ensure sustainable long-term fixes are implemented. Influence Engineering Standards * Define and champion best practices around reliability engineering, SLIs/SLOs, capacity management, release engineering, and operational maturity across the company. Mentor and Multiply Impact * Provide technical leadership and mentorship to engineers across SRE and software engineering teams. Help shape reliability culture and raise the operational excellence bar across the organization. WHAT WE’RE LOOKING FOR * 8+ years of experience in Site Reliability Engineering, Infrastructure Engineering, or related roles operating large scale distributed systems. * Strong collaboration and communication skills with the ability to influence technical direction across teams. * Strong experience supporting high traffic, user facing production environments. * Deep understanding of one or more: distributed systems, networking, Linux systems, cloud native architectures. * Experience designing highly available systems with strong operational and reliability practices. * Strong programming skills in languages such as Go, Python, or similar. * Strong understanding of observability systems including metrics, logging, tracing, and alerting. * Experience improving reliability through SLOs, automation, incident management, and performance optimization. * Demonstrated ability to troubleshoot complex issues across applications, infrastructure, networking, and services. Nice to Have * Experience operating systems at internet scale traffic volumes. * Experience with Kubernetes, containers, cloud infrastructure, and modern deployment platforms. * Familiarity with technologies such as Prometheus, Grafana, OpenTelemetry, Envoy, Kafka, ClickHouse, Cassandra, Redis, or similar distributed infrastructure technologies. * Experience with CDN optimization, edge reliability, traffic engineering, or global infrastructure. * Contributions to open source software or participation in technical communities. * Experience leading large scale incident response and operational transformation initiatives. Why Join Reddit? You’ll help shape the reliability and performance of one of the internet’s largest platforms, influencing experiences used by millions of people every day. This is an opportunity to solve deeply complex engineering problems at massive scale while helping define the future of reliability engineering for a modern consumer platform. Benefits * Global Benefit programs that fit your lifestyle, from workspace to professional development to caregiving support * Family Planning Support * Gender-Affirming Care * Mental Health & Coaching Benefits * Private Medical, Dental, and Vision Benefits * Personal Retirement Savings Account with matching contribution * Cycle to Work and Tax Saver schemes * Flexible Vacation & Paid Volunteer Time Off * Generous Paid Parental Leave In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out of recording, transcription and summarization prior to any scheduled interviews. During the interview, we will collect the following categories of personal information: Identifiers, Professional and Employment-Related Information, Sensory Information (audio/video recording), and any other categories of personal information you choose to share with us. We will use this information to evaluate your application for employment or an independent contractor role, as applicable.  We will not sell your personal information or disclose it to any third party for their marketing purposes.  We will delete any recording of your interview promptly after making a hiring decision.  For more information about how we will handle your personal information, including our retention of it, please refer to our Candidate Privacy Policy for Potential Employees and Contractors. Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve.  Reddit is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If, due to a disability, you need an accommodation during the interview process, please let your recruiter know.