Work on DuckDuckGo's C++ Functional Team building high-performance browser core code (Chromium) using modern C++ (C++23). Lead projects end-to-end, implement tracker blocking and VPN/PII features, profile and optimize performance, and use metrics to validate results. Requires 7+ years of software engineering experience and strong foundations in algorithms, data structures, concurrency, memory management, debugging, and large build systems. Role is remote across many countries and expects travel ~2x/year for team meetups.

Remote senior role on DuckDuckGo's Web Dependability Engineering team focused on ensuring websites work across DuckDuckGo browsers on multiple platforms. Requires 7+ years building and debugging complex web apps with vanilla JavaScript, deep knowledge of web standards, web components, and browser APIs, plus experience reverse-engineering obfuscated code, triaging incidents, and shipping cross-platform fixes. Role involves occasional travel (about twice a year) and passing a background check. Compensation is paid on regional annual scales (region-specific amounts listed in the posting).

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.

Join DuckDuckGo's Privacy Functional Team to lead development and maintenance of privacy technologies (e.g., tracker radar, web tracking, email protections) and participate in privacy review and audit processes. The role involves system design for search/AI features, mentoring other engineers, and requires travel twice yearly for company gatherings. Compensation listed as $178,500 USD annually plus stock options.

Work on Mapbox's EV charging infrastructure data platform: ingest and reconcile global charge point operator data, build scalable data pipelines and APIs, design data validation/quality systems, and develop internal tooling and dashboards. Role expects 3+ years of production Rust experience, hands-on experience building highly available services in container-based AWS environments (Docker, ECS, Fargate, or Kubernetes), knowledge of data engineering and distributed systems, and strong English communication.

Mercari Group seeks candidates able to join as new graduates in Oct 2027 or Apr 2028 for a Software Engineer internship based in Japan (remote or Roppongi office). Internship is typically 2–3 months with >20 hours/week. Tracks include backend, frontend, mobile, platform engineering, SRE, data engineering, and security engineering. Required or preferred skills include RDBMS/SQL, experience with languages and tools such as Go, PHP, Java, JavaScript/React, Swift, Kotlin, Python, Kubernetes, Terraform, cloud (Google Cloud/AWS), and familiarity with AI projects. Visa and travel/accommodation support are provided for overseas applicants; English and Japanese CEFR level B2 are indicated as required/desired in some 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.

Canonical is hiring an Embedded Linux Field Engineer to work remotely from Japan (preferably Tokyo or Osaka). The role involves presales engagement, solution elaboration, project delivery for embedded Linux and IoT customers, and acting as a customer advocate. Requires extensive Linux and embedded experience (Yocto/Buildroot/RTOS), proficiency in at least one of Golang, Python, C, C++ or Rust, professional English and Japanese, and willingness to travel up to 30%.