Senior Software Engineer

Senior Software Engineer

Agents don’t wait for approval. They call models, tools, and APIs thousands oftimes before anyone reads the first answer. Someone has to decide which of thosecalls go through, what they’re allowed to cost, and who’s accountable for them.

That’s Zuplo: the unified gateway for APIs and AI — one programmable policyengine for the models your apps call and the agents that call you. Teams routetheir AI and MCP traffic through our AI Gateway and MCP Gateway, so every agentcall is accounted for.

We’re hiring a Senior Software Engineer to help build and run it.

You’ll own major pieces of the gateway runtime, the control plane, and thesystems that keep them reliable. Our stack spans Kubernetes, several clouds, andthe edge, and we care more about how fast you learn than which tools you alreadyknow.

What you’ll do

• Design how agents making thousands of model and MCP tool calls areauthenticated, metered, rate-limited, and observed.
• Ship new guardrails and routing policies for the AI Gateway, such as modelfallback, spend caps, and prompt-injection checks, behind canaries, alerts,and a clear rollback.
• Build and operate the services behind all of this across Kubernetes, multipleclouds, and the edge, mostly in TypeScript and Go, with some Rust.
• Own what you ship in production. When a customer reports something vague, youtake it to a root cause, a fix, and a dashboard so it can’t hide again.
• Work across the rest of Zuplo too. API management (portal, keys, rate limits,GitOps) and our monetization service run on the same policy engine.
• Keep what’s already shipped healthy, including the customer issues that makeit to engineering.
• Improve how we ship, from CI/CD to infrastructure as code (Terraform, Pulumi,or similar).
• Work with product, developer experience, and customers to turn a fuzzy ideainto a scoped plan, then ship it end to end.

What you bring

Required:

• Experience (typically 5+ years) building and running distributed systems inproduction.
• Hands-on Kubernetes experience, or proof that you can get there fast. Tell usabout a time you picked up an unfamiliar system quickly.
• Fluency in TypeScript/Node.js or Go, and a willingness to work in the other.
• Experience with AWS or GCP.
• Working knowledge of networking: DNS, TLS, and load balancing.
• Experience with CI/CD, observability, and incident response (for example,Prometheus, Grafana, or OpenTelemetry).

Preferred:

• Hands-on experience with LLM APIs, MCP, or agent frameworks, and with thesecurity, cost, and reliability problems that come with them.
• Experience building or running proxies, gateways, or edge and serverlessruntimes.
• Experience with multi-cloud or hybrid deployments.

How you work

• You use AI every day, and you can explain what it built: why it works and whatit could break.
• You care about alignment. You want to know that systems and agents are doingwhat we intended, and you build ways to find out fast when they aren’t.
• You care more about impact than about the code itself, and you reach for the80/20 solution first.
• You’re relentlessly resourceful, with a bias toward doing things today.
• You fix what’s broken, whether or not it’s yours.

Zuplo was founded by the folks behind Auth0’s developer experience and Azure APIManagement. What drives us is building products developers love to use.

We are not a 9-to-5 company. Hours are flexible, and we expect high output andquality. We work hard, learn fast, and push boundaries. We respect work-lifebalance, and we also expect real commitment when deadlines approach orchallenges arise. In return, you’ll grow fast and make a real impact onafat-growing company going after a multi-billion dollar market. If you want yourcontributions recognized and your skills challenged, alongside a team that caresas much as you do, Zuplo is the place for you.

What we offer

• Competitive salary, plus equity options so you share in what we build.
• Unlimited PTO. We encourage everyone to take at least 20 days off a year.
• Funded team off-sites in beautiful and fun locations.
• A high-end MacBook Pro and the best tools available.
• Continuous learning and professional development, including exploring new AItools.

Location and work authorization

In the San Francisco Bay Area, you’ll work from our office three days a week.Elsewhere in North America, the role is remote. You must already be authorizedto work in the country where you’re based. We’re unable to sponsor visas forthis role.

• Initial screening with our CTO
• Take-home exercise (a few hours)
• Technical interview with the rest of the team over Zoom
• Final conversations with our founder and co-founder

Join a passionate team building the future of API management.