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Engineering jobs in Ontario, United States

6 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.

Engineering jobs in Ontario at a glance

Open roles
6
Remote
33%
Posted in the last 30 days
3
Advertised pay, middle half (all of California)
$180K – $275Kmedian $222K

From the 12,672 engineering jobs in California that state yearly pay in USD: the top of each advertised range. Updated nightly.

Hiring most here

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1–6 of 6 jobs

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United States ×California ×Ontario ×Engineering ×Clear all

  • Staff Engineer, Atlas Agent Engine

    3 days ago

    MongoDB · Ontario, California, United States +2

    On-siteFull-timeLead / staffCA$187K – CA$260K a yearEngineering

    Work closely with product management, product engineering, product design peers as well as other teams within the company to define the first version and future evolution of the service; Design, build and deliver well-tested core pieces of the platform in collaboration with…

  • Sr Software Engineer, Applications

    3 weeks ago

    Basis · United States +1

    RemoteFull-timeSenior$119.1K – $165K a yearEngineering

    Extend our identity layer in Auth0: authentication flows, token issuance, identity federation.; Build and maintain our ReBAC authorization model in OpenFGA, the system every authorization decision on the platform runs through.; Own the details of OAuth 2.0 and OIDC in our…

  • Staff Software Engineer, AI

    3 weeks ago

    Basis · United States +1

    RemoteFull-timeLead / staff$136.9K – $210K a yearEngineering

    At Basis, we empower agencies and brands with cutting-edge software that automates digital media operations. Our all-in-one platform supports seamless planning, reporting, and financial reconciliation across direct, programmatic, search, and social media.

  • Senior Software Engineer, Cluster Scalability

    6 weeks ago

    MongoDB · British Columbia, Canada +1

    Full-timeSeniorCA$158K – CA$220K a yearEngineering

    Join Cluster Scalability, one of MongoDB's Online Transaction Processing teams, and help build the core infrastructure that makes MongoDB a world-class distributed database. The team builds the infrastructure and tools that let customers scale their workloads past what a single…

  • Quality Engineer

    6 weeks ago

    Canopy A&D · Ontario, California, United States

    On-siteFull-timeSenior$70K – $90K a yearEngineering

    Hera Technologies, LLC (the “Company”) is seeking a highly motivated, detail-oriented Quality Engineer to join its team. The successful candidate will focus on reviewing and maintaining quality system policies and procedures and quality control processes. This position requires…

  • Senior Engineering Manager, Storage Execution

    8 weeks ago

    MongoDB · Ontario, California, United States

    Full-timeManagerCA$191K – CA$265K a yearEngineering

    The Storage Execution team sits at the heart of MongoDB’s Online Transaction Processing (OLTP) team. We own the core transactional read/write path on each node, across both today’s storage engine and a next‑generation cloud-native storage architecture. Our work determines how…

Updated 07 Nov 2026 10:21 UTC from the OptiTalent job library.