Platform Engineer, Infrastructure

Visa Hunt; San Francisco (CA); Hybrid; USD 170,000 - 250,000; Full time

Benefits offered by this job

Equity program

Health insurance

401(k) match

Flexible PTO

Relocation support

Office meals

Work equipment

Parental leave

Team events

Job summary

Wispr is building the first voice interface powering Flow, enabling natural speech-to-text across devices with a focus on latency and scale. Our small team moves fast, and you’ll help design systems that support hundreds of millions of users.

The role targets a hands-on platform engineer who ships high-impact features, improves developer productivity, and shapes the core infrastructure that underpins Flow’s experiences.

Qualifications

• Experience owning large platform components from design to deployment.
• Ability to tackle hard production problems and optimize for latency.
• Strong testing discipline and fast, safe shipping.

Responsibilities

• Architect and own whole parts of the platform end to end.
• Take the gnarly production problems nobody else has picked up.
• Make every product engineer faster — dev experience, deploy speed, abstractions.
• Build the agentic workflows that speed up you and your team.

Skills

End‑to‑end ownership

Production issue debugging

Dev experience speed

Agentic workflows

Tools

Python

FastAPI

PostgreSQL

Redis

Temporal/SQS

Terraform

AWS

Job description

About Wispr

We're building the first voice interface a billion people use every day.

Our first product, Flow, lets you talk instead of type anywhere on your computer or phone, and turns messy speech into polished text that is ready to send. It's scaled from $2M → $50M in ARR in under 12 months with millions of users and thousands of enterprise customers. How we think

The team is still small enough that every person shapes what gets built.

About the Role

Every time someone talks to Flow, they're waiting — mid-sentence, cursor blinking — for their words to appear. 500ms feels like magic. 1000ms feels annoying. People use Flow hundreds of times a day, and they feel every single request.

Why this is hard: we've scaled our user base faster than our infrastructure could keep up with. We build and deploy our own voice models, and we've tuned our networking stack to hit P50 latencies of 500ms around the globe. But latency is just the beginning. Our platform layer sits behind every personalization feature, the multi-step workflows that turn speech into action, and the primitive infrastructure the rest of the product is built on. We're shipping new surfaces fast, which means the core platform now needs far more rigor and a lot more headroom.

We've built for millions of users and thousands of enterprises with a three-person platform team. You'd be on the ground floor, creating the systems that support the next hundred million.

What You'll Do

• Architect and own whole parts of the platform end to end.

• Take the gnarly production problems nobody else has picked up.

• Make every product engineer faster — dev experience, deploy speed, abstractions.

• Build the agentic workflows that speed up you and your team.

This role is perfect for you if:

• You've rewritten an entire service in a couple of days because the technical debt annoyed you.

• You've broken prod, seen what went wrong, and learned from it.

• You ship fast, but never without rigorous testing.

• You get excited about complex problems with lots of constraints and edge cases.

• You care as much about the user journey as the technical requirements.

Tech stack: Python/FastAPI, PostgreSQL, Redis, Temporal/SQS, Terraform, AWS

Logistics

Location. About 60% of the team is in San Francisco and the rest are remote, mostly US-based.

• If you're in SF: you'll be in the office most days. We think the best work happens in person. Most of the team is here five days a week, and a few do three or four days depending on family or long commutes.

• If you're remote: we're open to remote for some roles. We fly remote teammates to SF for three to four days a month.

Visa sponsorship. We sponsor visas: H1B, O1, EB1, L1, STEM + OPT, and more. We can't successfully sponsor for every role and every candidate, but if we make you an offer we'll make every reasonable effort, and we retain an immigration law firm to help.

What we offer

We're a small, focused team that cares deeply about the quality of our work and the people we do it with. Here's what you can expect:

• Equity on employee-friendly terms, including extended exercise windows and a combination of ISOs and RSUs. Ask us for more details!

• Health, dental and vision. We cover 100% of the premium on the Anthem Blue Cross Gold PPO, and 75% of premiums for dependents. (US only)

• 401(k) with up to a 4% match. (US only)

• Flexible time off and company holidays.

• All meals in the office, plus commuter benefits and relocation reimbursement if you’re moving to San Francisco.

• A high-spec laptop, monitor, and a whisper-friendly microphone.

• Regular team events and off-sites.

• 16 weeks of paid parental leave (12 weeks for non-birthing parent). The early days with a new baby matter more than anything we're doing here, and we want you to be present for them.

We’re designing how humans interact with AI, which makes representation even more important, and we strive to include a range of diverse perspectives on our team.

We are committed to ensuring a fair and accessible interview process. If you need any accommodations or adjustments, please let us know.