Proxy Network EngineerVerified as a real position

Who we’re looking for

• Deep networking knowledge. TCP/UDP, sockets, connection handling, routing. Not surface-level.
• Protocol expertise. HTTP, HTTPS, SOCKS5. You understand them at the byte level.
• Can write a reverse proxy from scratch. Not just configure squid or nginx. Write the proxy.
• Performance obsessed. You profile, measure, and optimize. You know where the bottlenecks are.
• Understand proxy types. Residential, mobile, datacenter, ISP. Their characteristics, use cases, and limitations.
• Experience with IP reputation. How it works, how to manage it, how to recover from blacklisting.
• Geo-targeting knowledge. Country, city, ASN level. How it works, accuracy limitations.
• Linux networking. iptables, routing tables, network namespaces. Comfortable at this level.
• Self-directed. You don't need someone to tell you what to build next.
• Great writer. Documentation, architecture decisions, protocol specs. Clear communication matters.
• Fluent in English, written and spoken.
• BSc or higher in CS or equivalent technical field.
• Built proxy or networking infrastructure before (not just used it).
• Deep understanding of HTTP/HTTPS/SOCKS5 protocols.
• Experience with high-throughput, low-latency systems.
• TCP/UDP programming at socket level.
• Experience building residential or ISP proxy networks.
• Understanding of ISP relationships and mobile carrier specifics.
• IP rotation and session management systems.
• IP quality scoring and reputation management.
• Geo-targeting implementation (country, city, ASN).
• Multi-tenancy and customer isolation.
• HTTP/2 and HTTP/3 proxy experience.
• Terraform for infrastructure provisioning.
• Experience at massive scale.

What you’ll do

• Build proxy infrastructure from scratch. Not integrate existing solutions. Write the core systems yourself.
• Design and implement rotation systems. IP rotation, session management, sticky sessions, intelligent routing.
• Manage IP reputation and quality. Monitor, track, score, and optimize IP health across pools.
• Build bandwidth reporting and metering. Track usage, report stats.
• Write reverse proxy systems. High-performance, optimized for our use case. Not just configure squid or nginx.
• Handle multiple proxy types. Residential, mobile, datacenter, ISP. Understand the differences, characteristics, and when to use each.
• Implement geo-targeting. Country, city, ASN level targeting.
• Optimize for performance. Every millisecond matters. Every connection matters.
• Work with networking fundamentals. Routing, DNS, TCP/UDP tuning, connection pooling, concurrent connection limits.
• Support multiple protocols. SOCKS5, HTTP, HTTPS. Different session types and authentication methods.
• Understand HTTP/2 and HTTP/3 differences. And how they affect proxy behavior.
• Build monitoring and health checks. Track proxy pool health, failover, redundancy.
• Handle IPv4 and IPv6. Understand the differences and implications.
• You define the architecture. We have requirements, not a blueprint. You'll decide how to build it.

About the position

Proxy Network Engineer We are looking for an engineer who can build proxy infrastructure from scratch. Not configure existing solutions. Build. Residential networks, ISP proxies, rotation systems, session management. If you understand the difference between a high-level integration and writing a reverse proxy yourself, this role is for you. About SearchApi SearchApi is a real-time SERP API delivering structured data from 100+ search engines and sources, including Google Search, Google Shopping, Google Jobs, Bing, Baidu, YouTube, Amazon, and many more. We power production workloads for Fortune 500 companies and fast-moving startups who need reliable search data at scale. We're a lean, profitable, bootstrapped team. No VC pressure, no bloat. Just engineers shipping real products to real customers.

Benefits

• 🏡 Fully Remote. Work from anywhere.
• 📈 Equity share. Own a piece of what you're building.
• 💵 Profit sharing. When we win, you win.
• 🧠 Greenfield project. Build something from scratch.
• 🏝️ Annual team retreats (last one in Spain).