Role to design and implement core distributed-systems components for Serverless Elasticsearch: indexing, cluster coordination, shard/node scale, performance and concurrency. Requires deep distributed-systems knowledge, strong Java (JDK), algorithms, concurrency, and experience debugging and operating large-scale clusters. Bonus: Netty, Lucene, data stores and search/analytics experience.

Lead and grow a team of software engineers owning delivery, technical direction, and operational excellence for the Account Experience surface (Primer Companion, merchant setup, monitors, workflows, auditing). Role requires hands-on technical credibility for system design and reliability, partnering with Product on roadmap and hiring as the company scales. Remote-first role available across the listed countries.

Join Datadog's REDAPL team to design and build a query engine and other platform components for high-throughput relationship traversal, data ingestion, processing, and querying. The role involves leading technical initiatives, improving scalability, resilience, and performance, and collaborating with internal product teams. Experience with distributed systems, back-end engineering, and graph databases is highlighted.

Responsible for developing and maintaining core framework and messaging transport components for Kraken's trading engine (Aeron-based). Tasks include designing low-latency, high-availability messaging across unicast/multicast/IPC, tuning system stack for microsecond latency, building durable message replay integrations, implementing security and risk mitigations, and collaborating across distributed teams. Requires 5+ years' C++ experience and familiarity with Linux-based concurrent/low-latency systems; experience with Aeron, UDP/multicast, kernel-bypass techniques, profiling tools, and knowledge of trading systems and crypto is desirable.

Work on designing and implementing low-latency, highly scalable distributed systems and APIs for Twilio Voice. Requires 5+ years of software engineering experience with backend/infrastructure focus and proficiency in Java, Spring/Dropwizard, relational databases (PostgreSQL/Aurora), and cloud platforms (AWS/GCP). Role based in Dublin with occasional travel.

Remote Senior Backend Engineer role at DuckDuckGo focused on developing performant, testable backend systems and data pipelines (Perl v5, Go, Node.js). Responsibilities include implementing AI-assisted features for Search and Duck.ai, maintaining search relevancy, mentoring engineers, and collaborating cross-functionally. Compensation listed at $178,500 USD/year plus stock; role expects ~40 hours/week and travel ~2 times/year for company meetups.

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).