Senior Windows Software Engineer

OLOID · Sunnyvale, in office · Full time · $170,000 to $210,000 base

A new Sunnyvale tech hub, built from day one

We are building a brand new tech hub in Sunnyvale, and you would be one of its founding hires, reporting into our core executive team. It is a lean team, so you own a workflow end to end and have real influence over your scope of work, how the team is built and who joins next.

Our Windows client runs on the shared workstations frontline teams depend on every shift. When it works, nobody notices. When it does not, a ward or a production line is waiting. This is a hands on product engineering seat in both C#/.NET and C++.

Why now

2027 is a big year for us. Revenue is up 600 percent since our Series A and we are going after seven figure enterprise deals. Microsoft retires SMS and voice MFA in Entra ID in February 2027, which pushes every enterprise toward exactly what we build. Healthcare is our next big market, and Aura, our AI identity assurance agent, is already part of Workday’s Agent System of Record. The Sunnyvale hub is where that next chapter gets built, and the people who join now are the ones who shape it.

Is this you?

Be honest with yourself on this one: it is not for the faint hearted. You will wear many hats, move between building, fixing and talking to customers, and make calls without a playbook to lean on. If you have worked in a high growth environment and bring a growth mindset, you will thrive here, and you will be part of building something at a genuinely exciting moment.

Why OLOID

OLOID builds passwordless identity for the 1.8 billion people who work on the frontline: the nurse, the line worker, the store associate who moves between shared workstations all shift, often with no work smartphone. They sign in with a face, a badge tap or NFC, on Windows, Linux and Android, layered onto Okta, Microsoft Entra ID, Ping Identity and the systems a company already runs. Tyson Foods, PepsiCo, GE, Takeda, Flex and Honeywell are customers, and we are backed by Dell Technologies Capital, Okta Ventures and Honeywell Ventures.

What you will do

• Design and ship Windows features, background services and integrations in C#/.NET and C++
• Own threading, performance, IPC, permissions and failure recovery
• Track down field issues through logs, crash dumps and reproducible lab environments
• Review code, improve installs and upgrades, and explain root causes clearly to customers and colleagues

What you bring

• Recent hands on delivery of complex Windows applications, desktop clients, services or endpoint agents
• Production code in both C#/.NET and C++, with clear examples of what you wrote in each
• Strong Windows internals: processes, services, threads, permissions and the relevant Windows APIs
• Credible debugging of crashes, hangs and resource issues with the right Windows tools

Great if you also have

Credential providers, Active Directory or Entra ID; WPF, WinUI or COM; MSI, WiX or MSIX; Citrix or shared workstation environments.

Where you work

Full time in our new Sunnyvale office. You must live in the San Francisco Bay Area or be prepared to relocate. We are investing in building an in person team, and Sunnyvale is our technical SME hub.

Pay and the rest

Guideline $170,000 to $210,000 base, set on experience. Equity is part of every offer. You must be authorised to work in the US without employer visa sponsorship, now or in the future. OLOID is an equal opportunity employer.

Interview stages

1. Intro call with our talent team. About 30 minutes on your background, what you are looking for and the role.
2. First interview with the hiring lead. A deeper conversation about your experience and the work you have owned.
3. Conversations with the wider leadership team. Meet the product, engineering and commercial leaders you would build with.
4. One day onsite in Sunnyvale. Time with the team in person, including a hands on practical based on real work.

You will hear where you stand at every stage.

Come ready

Come ready to show real examples of your work: things you built, configured, designed, shipped or wrote yourself. Be confident in your ownership and execution. We want to hear what you personally owned, the calls you made and how you got it over the line.