3w
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Open Source Software Engineer: Apache Kafka Committer
Schiphol-Rijk or United States or Cork or San Jose or Morrisville or Raleigh or Boston or Seattle
HybridFull Time
12+ YOE12+ years software engineering experience, current Apache Kafka committer, expert Java and deep Kafka internals, proven upstream KIP/Jira delivery, strong written communication and public open-source collaboration.
Apache Kafka, Kafka Streams, Kafka Connect, MirrorMaker 2, Kafka clients, KRaft, Java, Kubernetes, Jira, Strimzi
1mo
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Sr. Open-Source Software Engineer - Apache Cassandra
Raleigh or San Jose or Seattle or Waltham
$220k-$265k/yr HybridFull Time
12+ YOE12+ years software engineering experience, Apache Cassandra committer status, expert Java skills, deep mastery of Cassandra internals in at least one domain, CEP/Jira/GitHub open-source leadership, strong written communication.
Java, Apache Cassandra, GitHub, Jira, GoCQL, Cassandra Sidecar, Spark, ZSTD, CQL
1mo
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Manager, Open Source Lead Discovery
Arizona or North Carolina or Virginia or United States or Georgia or Texas or Florida or Boston or Colorado
$80k-$100k/yr RemoteFull Time
4+ YOE2+ Mgmt4+ years in sales ops/lead generation/QA, 2+ years people management, experience with pipeline/SDR functions, strong analytical and process orientation, experience using data to drive decisions; Salesforce familiarity a plus.
Salesforce
2mo
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Principal Product Manager - Virtualization Architect
Massachusetts, United States
$160k-$303k/yr RemoteFull Time
10+ YOE10+ years in product management or engineering with virtualization; strong KVM/QEMU/libvirt knowledge; cross-functional leadership; open-source collaboration.
KVM, QEMU, libvirt, OVS, OpenStack, oVirt, Kubernetes, KubeVirt, Virtio
2w
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Recruiter (85809)
Boston, Massachusetts, United States
$65k-$70k/yr OnsiteFull Time
2+ YOEBachelor's or equivalent,2+ years recruiting experience,experience with ATS and candidate sourcing tools,ability to manage multiple openings and work with hiring managers.
ATS
3mo
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Applied Researcher II
New York or San Francisco or McLean or Cambridge or San Jose
$263k-$327k/yr OnsiteFull Time
PhD or MS with significant AI/ML research; experience building large DL models; open-source and cloud experience; ability to own a research agenda.
PyTorch, AWS, HuggingFace, Lightning, VectorDBs
2d
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Senior Engineer, Inference Data Plane
Boston, Massachusetts, United States
$139k-$174k/yr RemoteFull Time
Expert in distributed inference systems, experience with large-model hosting, contributions to open-source inference projects, strong GoLang or Python and gRPC skills, and cloud operations experience.
llm-d, NVIDIA Dynamo, Ray Serve, KServe, vLLM, SGLang, TensorRT, TensorRT-LLM, TGI, Modular MAX, GoLang, Python, gRPC, Kubernetes, NIXL
2d
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Observability Tech Lead
Somerville, Massachusetts, United States
$160k-$200k/yr HybridFull Time
5+ YOE5+ years with open-source observability tools, OpenTelemetry instrumentation, Prometheus/PromQL, TS and Go services on Kubernetes, experience with time-series and AI-driven observability workflows.
TS, Go, Kubernetes, MongoDB, PostGres, Grafana, Loki, Mimir, Tempo, Alloy, Prometheus, OpenTelemetry, Claude Skills, Gemini Gems, promQL
1mo
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eBPF Engineer - Remote
Boston or Israel
RemoteFull Time
5+ YOE5+ years as a software engineer with proficiency in C, Assembly, Linux, kernel development, eBPF, OpenTelemetry, and familiarity with AWS; experience building runtime instrumentations and working with open-source communities.
C, Go, Assembly, Linux, AWS, OpenTelemetry, eBPF
2mo
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Protective Intelligence Analyst
Boston, Massachusetts, United States
$115k-$130k/yr OnsiteFull Time
5+ YOEBachelor’s degree; 5–7 years in protective/threat intelligence; strong briefing and research skills; experience with open-source and threat monitoring; familiarity with protective intelligence concepts and related tools.
Seerist, Ontic, Everbridge, TLO, International SOS TRM, Virtual Command Center
1mo
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Software Developer Growth Engineer
Cambridge, Massachusetts, United States
$140k-$180k/yr OnsiteFull Time
2+ YOE2+ years professional software engineering experience, strong engineering fundamentals, production shipping experience, public-facing content creation, developer engagement, active GitHub/open-source contributions.
Blitzy, GitHub, YouTube
2w
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Investigator, Special Investigations Unit (Aetna SIU)
Connecticut or Idaho or Arkansas or Vermont or Georgia or Texas or Minnesota or New Mexico or Montana or Iowa or Michigan or California or Oregon or Maine or Wisconsin or Washington or New York or North Dakota or Kansas or New Jersey or Nebraska or Indiana or Nevada or Rhode Island or Louisiana or Kentucky or Tennessee or Mississippi or Ohio or Oklahoma or West Virginia or Massachusetts or Maryland or South Carolina or Alabama or Missouri or Utah or Arizona or Virginia or South Dakota or Illinois or North Carolina or Florida or Colorado or Pennsylvania or New Hampshire or Wyoming or Delaware
$44k-$94k/yr RemoteFull Time
1+ YOE1-3 years healthcare fraud investigative experience; proficiency with Microsoft Word, Excel, Outlook, open-source database search tools and social media; ability to travel for business and legal proceedings.
Microsoft Word, Microsoft Excel, Microsoft Outlook, open source database search tools, social media
1mo
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Application Engineer, Drone Technology
Framingham, Massachusetts, United States
OnsiteFull Time
2+ YOEBachelor's in engineering or related field; 2-5 years in autonomous systems/drones; experience with open-source flight control systems; hardware integration experience; defense or commercial drone familiarity would help.
Raspberry Pi, NVIDIA Orin, Qualcomm Snapdragon, Pixhawk, PX4, ArduPilot
1w
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Senior Solutions Engineer | East Coast | Remote
United States or New York City or Boston
$204k-$254k/yr RemoteFull Time
5+ YOE5+ years technical pre-sales experience, strong written and oral communication, customer-facing demos and technical evaluations, familiarity with open source or metrics/monitoring technologies, East Coast location preferred.
Grafana Cloud, Grafana
3d
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Geo Core Account Executive
New York or New Jersey or Connecticut or Massachusetts or Pennsylvania
$220k-$303k/yr FieldFull Time
4+ YOE4+ years experience with open source technologies, 4-8 years value-selling experience, cloud/Big Data or SaaS sales, proven quota attainment, ability to sell to C-level and build account plans.
Apache Spark, Delta Lake, MLflow
1mo
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Software Engineer II and Sr. Software Engineer - AI Frameworks
Mountain View or Redmond or Boston or New York or United States
$102k-$261k/yr HybridFull Time
2+ YOEBachelor's in computer science or related field and 2+ years engineering experience; coding in C, C++, C#, or Python; experience with AI frameworks, performance optimization, Android, open-source collaboration, and passing Microsoft security screening.
C, C++, C#, Python, ONNX, ONNX Runtime, Android, CLI, SDK, REST API, Windows, Office, Microsoft 365, Bing, SQL Server, VSCode
2w
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Talent Acquisition Partner
Norwood, Massachusetts, United States
$115k-$125k/yr OnsiteFull Time
Proven high-volume recruitment experience in manufacturing/engineering environments; ability to manage 15+ open roles, source candidates nationally, build partnerships, run end-to-end hiring, analyze recruiting KPIs, and ensure compliance.
Workday
3w
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Sr. Software Engineer (SDK & Integrations)
Arizona or California or Colorado or Delaware or Maryland or Massachusetts or Missouri or New Jersey or Nevada or New York or North Carolina or Oregon or Oklahoma or Pennsylvania or South Carolina or Texas or Utah or Virginia or Washington
$150k-$180k/yr RemoteFull Time
Identity Digital: A leading registry of generic top-level domain name extensions.
5+ YOE5+ years commercial software engineering; fluency in TypeScript and Python and working proficiency in Go; strong DNS, HTTP/TLS, crypto, API design, CI/CD, and open-source publishing experience; bachelor's degree or equivalent.
TypeScript, Python, Go, LangChain, LangGraph, LlamaIndex, CrewAI, Microsoft Agent Framework, OpenAI Agents SDK, Cloudflare Workers, Fastly Compute, Vercel Edge, npm, PyPI, Go module proxy, WebAssembly (WASM), SPIFFE/SPIRE, WebID, GitHub, JWTs, JWK Sets, ES256, Ed25519
2mo
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Senior Scientist, AI Applications - R&D Immunology Data Science & Digital Health
Cambridge or Titusville or Raritan or San Diego or Spring House
$109k-$175k/yr HybridFull Time
2+ YOEPhD in AI/ML or related field with at least 2 years of experience; strong maths (Bayesian, uncertainty, information theory); proficiency in PyTorch/TensorFlow; programming in Python; experience with open-source AI frameworks; ability to work independently in a multidisciplinary team.
Python, PyTorch, TensorFlow, LangGraph, DSPy, mem0
1mo
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Contract Recruiter
California or Colorado or Florida or Idaho or Illinois or Iowa or Kansas or Massachusetts or Michigan or Minnesota or North Carolina or North Dakota or Ohio or Oregon or South Dakota or Tennessee or Texas or Washington or Wisconsin or Green Bay or Appleton
$26-$29/yr HybridContract
Experience sourcing, screening, and presenting candidates; strong communication and organizational skills; ability to manage multiple openings; ATS experience preferred; high-volume hourly recruiting; ability to work independently in a hybrid environment; must reside in a listed US state.
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