DevOps Engineer / SRE

Highlights: Location: Remote (CET hours preferred) Compensation: 4,900 - 6,200 Gross + stock options Language: Russian-speaking team About Fundraise Up We re Fundraise Up - a global fundraising platform built to make donating to nonprofits fast, seamless, and accessible to all. Every month, our technology powers tens of millions of dollars in donations across the globe. We focus on innovation that directly impacts results: faster load times, higher conversion rates, global payment support, and accessibility-first design. Our platform is trusted by many of the world s leading nonprofits, including UNICEF, the Alzheimer s Association, and a wide range of global NGOs. With a 4.9/5 rating across top software review platforms, we re recognized not just for our impact - but for the quality of the product we deliver. A Truly Global Product We operate in the enterprise segment, serving nonprofit organizations across North America, the United Kingdom, Australia, and Europe. We re building a large and complex product ecosystem that serves nonprofits, donors, and partners around the world. The platform includes a modern checkout experience and customizable widgets (each a standalone SPA), donor, organization, and partner portals, admin tools, and several internal apps. Our backend is powered by Node.js (Koa, NestJS) and MongoDB. The frontend stack includes Webpack, Vue.js, and React, with nearly all code written in TypeScript. For high-throughput messaging and background processing, we use Kafka (for millions of events) and Bull (Redis). Analytics data is stored in ClickHouse, and we use Elasticsearch for search. The Team We are a distributed team of 160+ product professionals, including 80+ engineers. Our team members are mainly based across Spain, Poland, Portugal, Georgia, Armenia, Serbia, Turkey, and Cyprus. Many of our developers bring 5 - 10+ years of experience, and we foster a culture of deep technical curiosity and knowledge sharing. Despite our scale, we operate like a focused team - where every task matters and every voice is heard. We value thoughtful collaboration, strong engineering practices, and a product mindset. You ll be joining a team where quality, mentorship, and mutual respect come first. About the Role You will join a small team responsible for the stability, performance, and security of our server infrastructure: bare metal, VMs, databases, queues, networking, and infrastructure security. Our philosophy is simple: the team owns its systems end-to-end, and every engineer should be able to diagnose and fix issues in their area of responsibility. This role is for someone who enjoys working with real infrastructure (OS, hardware/virtualization, networks), not just cloud abstractions. What You'll Do • Work primarily with on premise infrastructure (bare metal and VMs): setup, maintenance, troubleshooting • Drive clarity in ambiguous situations by defining requirements, assumptions, and next steps • Own automation projects end to end (design rollout maintenance) • Improve how we operate: harden and tune systems and also improve the way the team works in terms of operational hygiene • Keep the platform stable, fast, and secure: servers, web servers, databases, queues • Investigate production incidents across OS / networking / infrastructure layers, apply temporary mitigations, coordinate with developers and participate in post mortems • Participate in on call rotations • Use AI in all aspects of day to day work: researching, troubleshooting, developing Requirements • 4+ years as a DevOps Engineer / SRE (or very close responsibilities) • Real, hands-on experience with servers (VMs, bare metal) at the OS level and below: configuring, troubleshooting, digging into why it s broken • Confident Linux skills (we use Ubuntu). We expect you to be comfortable with the core tools from Linux Crisis Tools • Solid understanding of networking basics; ability to configure and troubleshoot iptables • Ansible + Git • Experience with Bash or Python scripting for automation/observability • Production/on call experience: diagnosing incidents, restoring service, participating in post mortems • Ownership and attention to detail. Downtime is expensive: five years ago, 10 minutes of downtime cost us $100k - today it s even more Nice to Have We understand it s impossible to be an expert in everything, but it s important to have solid hands-on experience in two or more of the areas below: • ClickHouse, MongoDB: what each database is used for, monitoring, troubleshooting performance and slow queries, sharding • Kafka: operating clusters at scale (topic moves, broker replacements, tuning) • Redis: high load tuning, replication, sharding, performance monitoring • Elasticsearch: configuration, scaling, sharding/cluster management • HAProxy / Nginx: load balancing, SSL/TLS, caching, reverse proxying, performance monitoring • OS tuning: kernel/network stack/filesystem parameters for high load...