Senior Backend Engineer, Scanning Infrastructure

United States Digital Space LLC; United States; Remote; USD 140,000 - 200,000; Full time

Job summary

Lokker is seeking a Senior Backend Engineer to own and scale its scanning infrastructure. The role emphasizes high-volume website scanning, browser automation, and distributed scanning with a focus on reliability and cost optimization.

Production experience with browser automation and headless crawlers is required, along with strong background in distributed systems, HTTP/TLS/DNS, proxies and bot-detection related areas. Go, Rust, TypeScript/Node.js or similar languages are a plus.

Qualifications

• Experience building, operating or scaling browser automation or scraping infrastructure.
• Strong background in distributed systems and high-scale backend services.
• Production experience with Go, Rust, TypeScript/Node.js or similar.

Responsibilities

• Own and scale Lokker’s scanning infrastructure for high-volume website scanning.
• Improve reliability, performance and cost optimization of backend services.
• Work on browser automation, distributed scanning, and related networking components.
• Collaborate with teams on containerization, CI/CD and monitoring for robustness.

Skills

Browser automation

Headless browsers

Distributed systems

Go

Rust

TypeScript/Node.js

Job description

the company | Senior Backend Engineer, Scanning Infrastructure | REMOTE: North America / Europe, UTC-8 to UTC+2 | Full-time

Lokker is a privacy platform that helps organizations understand and control what is happening across public-facing infrastructure: websites, browser-side applications, scripts, pixels, cookies, tags, forms, SDK/API calls, and browser-side data flows.

We are hiring a senior backend engineer to own and continue to scale Lokker’s scanning infrastructure. This role focuses on backend systems for high-volume website scanning, browser automation, distributed scanning, networking, reliability, performance, and cost optimization.

IMPORTANT: A key requirement for this role is substantial, hands-on production experience with browser automation, headless browsers, crawlers, scanners, synthetic monitoring, scraping infrastructure, or closely related technologies. This is not a general backend role, and we can only consider candidates who have already built, operated, or scaled systems in this domain.

Other relevant experience includes distributed systems, queues/orchestration, high-scale backend services, HTTP/TLS/DNS, proxies, CDNs, WAFs, bot detection, and fingerprinting.

Production experience in Go, Rust, TypeScript/Node.js, C++, or similar.