A million emails a month move through NuMail — across real Gmail, Microsoft Graph, and SMTP mailboxes, with 2.4-second reply detection and AI drafts written in the customer's voice. We're a small team building the pipes the whole cold-email industry runs on. If you like hard systems problems and shipping them to production the same week, read on.
No layers, no standup theater, no sprint ceremonies for their own sake. We hire people who can own a surface end to end and trust them to ship it.
Distributed across time zones. Decisions get written down, not trapped in a meeting. A handful of overlap hours; the rest is heads-down focus on your schedule.
Code that's done goes to production. Most features are live within days of being scoped — the API changelog is public proof. Tight loops, real users, fast feedback.
From the schema to the endpoint to the docs to the on-call page. We're too small for hand-offs, and that's the point — the person who builds it runs it.
Everyone here has shipped infrastructure before. No hand-holding, no busywork — just hard problems, strong opinions held loosely, and a low tolerance for cruft.
Anyone can blast emails. The hard part — the part customers pay for — is sending a million a month through their own mailboxes without burning a single domain. That standard shapes how we build.
Every line of sending code is one bad decision away from a customer's domain landing in spam. We treat warmup, throttling, and bounce handling like a payments system: correct first, fast second.
Our REST API and MCP server are first-class products. A growing share of sends are orchestrated by AI agents — we design every primitive to be driven by code or by a model, never just a dashboard.
2.4-second reply detection isn't a vanity metric — it's the difference between a booked call and a cold lead. We chase tail latency the way other teams chase pixels.
Half our customers resell NuMail under their own brand on their own Stripe. We build the white-label rails as carefully as the core product, because their revenue runs on ours.
All roles are full-time and remote. Apply by email — no portal, no cover-letter ritual. Send us something you've built and a few lines on why this one.
Own the send pipeline end to end — the event-driven send workflows, the Gmail/Graph/SMTP adapters, rate-limiting, and the queue that moves a million emails a month without tripping a provider. TypeScript and Postgres, event-driven by default.
Be the person who keeps domains out of spam at scale. Own warmup logic, the cross-customer warmup pool, SPF/DKIM/DMARC tooling, bounce classification, and the reputation models that decide how fast each mailbox is allowed to send.
Sit between product and growth and build the GTM machine: product-led onboarding flows, lifecycle automation, attribution, lead routing, and the internal tooling marketing and sales run on. You ship code against our own API and MCP server (TypeScript, Postgres) and you think in funnels, not just features.
Own how agencies discover NuMail. Run the content engine (we ship comparison pages and deliverability deep-dives every week), SEO, lifecycle email, paid experiments, and the launch motion for every new feature. You write, you measure, and you compound channels that keep paying out.
Close the agencies betting their outbound on us. Run demos, drive Stripe-Connect migrations off SmartLead and Instantly, and own a pipeline of agency and founder deals end to end. Technical enough to talk deliverability, commercial enough to talk margin — and relentless about follow-through.
Make NuMail famous in the feeds where operators actually hang out. Script and shoot short-form video — product demos, hot takes, before/afters, deliverability myth-busting — for TikTok, YouTube Shorts, LinkedIn, and X. You're comfortable on camera (or directing creators who are), you ship volume, and you know the cold-email audience well enough to make content that converts, not just racks up views.
Be the human agencies talk to when they bet their business on us. Run Stripe Connect onboarding, migrations off SmartLead and Instantly, and the white-label setup — then feed everything you learn back into the product roadmap.
Don't see your exact role? If you'd be genuinely great at building or running cold-email infrastructure and none of these fit, write us anyway. We'd rather meet the right person early than fill a job description.
Write to us →I shipped to production on day two. By the end of the first month I owned the entire warmup pool. There's nobody between you and the thing you're building — which is terrifying for about a week and then it's the best part of the job.
The list is short because the philosophy is simple: pay well, get out of the way, and don't make people justify being adults.
Early-team ownership with a long exercise window. You're building the company, not renting a desk — the upside should reflect that.
Benchmarked to senior engineering pay regardless of where you live. We don't discount talent by geography.
Work from wherever you do your best thinking. A few overlap hours for collaboration; the rest is yours to structure.
Take the time you need, and actually take it — with a real minimum so "unlimited" never quietly means "none."
The machine, display, and chair you want, plus a budget to make your workspace one you're glad to sit at.
We gather a few times a year to build, argue, and ship together in a room — funded, deliberate, and never mandatory busywork.
Four steps, usually inside two weeks. The work sample is paid and looks like the actual job — no whiteboard puzzles, no trick questions.
Send something you've built and a few honest lines on why this role. We read every one — a real person replies.
Forty-five minutes with the founder. Two-way from the first minute — you're interviewing us just as hard.
A scoped, real problem from our backlog. We pay for your time and you keep what you build.
Meet the people you'd work with, walk through your sample, and get a clear yes or no — fast.
A million emails a month already run through what we've built. The next million is the part you'd own. Tell us what you'd ship first.