Work on Firefox Desktop integrations: implement and improve install/update experiences and low-level OS integrations (particularly Windows and macOS). Requires 3+ years as a software engineer with systems-level programming experience (C/C++); Rust and prior OS API experience are bonuses. Role is remote (Belgium).

Work on Firefox security architecture and cryptography stack (cryptographic protocols, WebPKI, security-sensitive web APIs), design and implement web platform security features, improve browser reliability/performance/memory in a multi-threaded native codebase, and collaborate across teams. Requires strong software engineering fundamentals, proficiency in C/C++, familiarity with Rust, and experience debugging cross-platform native applications.

You will author merged PRs and build integrations (libraries, agent frameworks, MCP servers, automation platform connectors) so developers and AI agents can access SearchApi. Required: proven merged open-source contributions in repos you don't own, fluency with Ruby/Python/TypeScript and at least one agent/automation framework, and strong written English for docs and PRs.

SearchApi seeks an experienced engineer to own the browser stack: patch browser engines (Chromium/Firefox) in C++, maintain per-OS fingerprint profiles, eliminate automation-detection signals (navigator, WebGL, canvas, audio, fonts, Client Hints, CDP leaks), and build tooling and tests to prevent regressions. The role requires deep reverse-engineering skills, familiarity with large browser build systems, and proven contributions to browser-engine patches or stealth tooling.

Work on the core AI tutor: design prompt architectures and agentic workflows, run rigorous experimentation with custom evaluation metrics, integrate AI into platform and content pipelines, prototype and productionize model interactions, and ensure safety, observability, and quality. Requires production software engineering (Python), experience building LLM-based systems (1+ years), and collaboration with educators and product teams.

Senior, hands-on Staff Product Engineer (Ruby on Rails). Remote role owning hard PRs and end-to-end product areas (billing, enterprise auth, API, dashboard, infra), responsible for performance, security, mentoring via code review, and shipping production Rails code. Fluent English and prior Stripe/billing experience required.

SearchApi seeks a remote Ruby Engineer to build and maintain web-scraping integrations and browser automation (CDP), tackle anti-bot evasion, optimize concurrency, and support production systems at scale. The role involves debugging production issues, reverse engineering protections, contributing across the stack (Ruby on Rails, PostgreSQL, Redis, Sidekiq), customer-facing support, and improving monitoring and infrastructure (Terraform, AWS, Prometheus, Grafana).

Remote role to design and implement greenfield proxy infrastructure: high-performance reverse proxies, IP rotation and session management, IP reputation tracking, geo-targeting and monitoring. Requires deep TCP/UDP and protocol knowledge (HTTP/HTTPS/SOCKS5, HTTP/2/3), Linux networking experience, prior experience building proxy or networking infrastructure, fluent English and a BSc or equivalent technical degree.

SearchApi seeks a remote Anti-Bot Engineer to research and implement anti-bot evasion, reverse engineer detection systems (Cloudflare, Akamai, DataDome, PerimeterX, etc.), optimize Playwright/Puppeteer/CDP configurations, debug TLS/protocol fingerprinting (JA3/JA4, HTTP/2, HTTP/3/QUIC), analyze network traffic, and run headless browsers reliably at scale. Fluent English and deep hands-on experience with browser internals, fingerprinting, network analysis tools, and relevant tooling (Playwright, Puppeteer, Selenium, Wireshark, Burp Suite, mitmproxy) are required.