Network Engineer - Trading Infrastructure About the opportunity We’ve partnered with a proprietary crypto trading firm operating in the highly competitive world of market-making and high-frequency trading. They build their own technology end to end and look for ambitious, self-driven people with evidence of excelling at challenging work. Expect a demanding, high-intensity environment where working side by side and staying responsive as markets move are central to the role, with strong earning potential and room to build a serious career in trading. They can teach you the markets, while you bring the drive. If this sounds like you, keep on reading! The Role You’ll help build and operate a global, latency-critical network connecting trading systems to exchanges across the US, Europe and Asia. Working across a multi-region, multi-cloud environment defined entirely as code, you’ll gradually take ownership of live regions and services, not just simply complete ticketed tasks. They value aptitude, sound judgment and self-driven learning, so you won’t need to know the entire stack from day one, but you will need to be comfortable with Linux, careful in production and rigorous about verifying and defending your work. What you'll do: Implement changes across their infrastructure as code, from firewall rules to new servers, subnets, peering entries and reusable modules, reviewing every plan before applying it and preventing undocumented configuration drift. Keep DNS, firewall rules and SSH access accurate as servers come and go, reconciling them against a single source of truth. Operate the automation that switches traffic between private circuits and cloud peering based on link health. Check latency and reachability against their documented RTT targets, using packet captures to verify what was sent and received. Tune Linux hosts under a senior engineer’s guidance, including kernel network parameters, NIC settings, IRQ affinity and CPU pinning, incorporating changes into their bootstrap scripts to ensure reproducibility. Improve their bootstrap, monitoring and blockchain-node scripts, keep runbooks clear and up to date, and identify further opportunities for automation. We're looking for someone who has: Working knowledge of Linux - shell, services, filesystems, permissions, and reading logs when something breaks. Enough scripting to automate anything you would otherwise repeat, and the patience to read code and config you did not write. The networking basics - IP/CIDR, subnets, routing tables, TCP versus UDP, DNS, TLS, and firewalls - plus curiosity about the layers underneath. Enough packet-capture literacy to tell "the request never left" from "we got no reply". Some hands-on time with a cloud platform, even if only on your own projects. Evidence you teach yourself hard things, whether a home lab, a personal project, or a competitive result you are proud of. Care and humility around production systems. You verify rather than assume, read before you write, and ask early rather than guess Fluent English What you'll get: The opportunity to make a real impact in the highly competitive world of crypto trading, working on technology they build entirely in-house. Hands-on learning alongside experienced colleagues who can teach you the markets while you bring the curiosity, ambition and drive. Meaningful ownership and room to grow, with responsibility shaped by what you can deliver rather than years served. Strong earning potential and the opportunity to build a serious long-term career in trading. Ready to make your mark? Apply now and put your skills to work in the world of trading! Team Software Development Locations Belgrade, Serbia Employment type Full-time Belgrade, Serbia You will love working with us. Here is why: Single, long-term projects Our developers enjoy the focused satisfaction of mastering one project at a time. Join us and experience how rewarding it can be when your work truly comes full circle. Remote-first culture You can work from anywhere! Our remote-first culture gives developers the autonomy to work wherever they please, while still connecting and collaborating with exceptional colleagues from multiple disciplines. You choose what's in sync with your lifestyle, and our team is here to make it work. Straightforward recruitment process Our stress-free recruitment process is tailored to the unique needs of developers. We take pride in offering a simple yet efficient way of bringing you onboard. Friendliest HR team on the planet Our HR team is here to make sure your work experience goes above and beyond! From the first moment of contact, they are sure to provide a warm and friendly experience ensuring that you're always surrounded by genuine support. Diversity and Creativity The atmosphere of creativity and productivity in a space that celebrates individual differences, different nationalities, experiences, and talents. Just imagine a workspace with different teams collaborating with each other, sharing marvelous ideas amongst themselves. Now that's valuable cooperation that leads to both personal and professional growth. Cool and Friendly Vibe We've heard many times that the vibe resembles that of a cool and relaxed savvy startup office - with an open-concept environment, cool, concrete columns, a spacious free drink & snack area, and the most beautiful view of Belgrade. Oh, and we have a big, pink, comfy couch! Shared Workspace in Serbia We're not a traditional outsourcing company as you know it (we don't use that term here), but a hub that finds, recruits, and manages teams who work together on different projects all in one shared workspace. Become a part of our community: A place where work & cool vibes converge Welcome to Teamcubate! We're more than just a workplace - we're a community that values innovation, creativity, and fun. We believe that happy employees are productive ones, so we go above and beyond to create an environment where you can grow, learn, and thrive. Our core team is dedicated to creating a culture of inclusivity, respect, and collaboration, where everyone's voice is heard and valued. We also understand the importance of work-life balance and offer flexible arrangements that allow you to recharge and unwind. And we are sure this cool team culture will get even better once you join us! About Teamcubate ApS Join Teamcubate and grab your best career opportunity today! Let us help you land a long-term job with some of the world's most exciting companies. Don't see a job that's the perfect fit for you at the moment? No worries! 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