Senior Software Engineer, Backend or Fullstack

Majura.ai; Surabaya ꦱꦸꦫꦧꦪ; Hybrid; IDR 279,000,000 - 446,400,000; Full time

Benefits offered by this job

Performance bonus

Learning budget

Hybrid work 3 days in Surabaya

CTO support

Job summary

Majura.ai in Surabaya is hiring a backend/fullstack engineer to own architecture across core products. You’ll ship end‑to‑end services, define API contracts, data models, and performance boundaries while partnering with our CTO and CEO.

You’ll build our AI infrastructure from the ground up, deploy and monitor your services, and mentor two junior engineers. Expect a fast‑moving, hands-on environment where initiative and clear documentation keep us aligned.

Qualifications

• 3+ years building and running backend production systems.
• Real production experience with scalable schemas, debugging at scale, and monitoring.
• Self-direction: ask good questions, then go.
• Strong writing: design docs, API docs, and PR descriptions.
• Comfort with ambiguity: decisions with incomplete information and possible rewrites.
• Fluent in English (professional proficiency).

Responsibilities

• Work autonomously on specs or problems with a customer focus.
• Own API contracts, data models, and service boundaries; defend architectural calls in review.
• Build our AI infrastructure from the ground up and own end-to-end ownership of one or two products.
• Deploy, monitor, and run your services without handing off to ops.
• Mentor two junior engineers through code reviews and pairing.

Skills

Backend experience

Production experience

Self-direction

Writing

Ambiguity tolerance

English fluency

Tools

Kotlin

Spring Boot

React

GraphQL

PostgreSQL

AWS

Job description

About the role

We're a pre-seed startup building the operating system for Indonesia's logistics ecosystem. You'll partner with our founding team—both Silicon Valley transplants. CTO (ex-Airbnb, YComb) and CEO (ex-TikTok, Lyft).

Every engineer here owns services end to end. We're hiring one backend/fullstack engineer to own architecture across our product surface as we scale into Q4.

Location

Surabaya, Hybrid (3 days/week in office)

Reports to

CEO

What You'll Do

• Work autonomously. Sometimes you'll get a spec. Sometimes you'll get a problem and a customer, and you figure out the rest. Big calls get a quick sign-off from the CTO or CEO — everything else is yours. No ticket queue, no committee, no waiting weeks for a decision.
• Own systems outright. One or two products are yours: API contracts, data models, service boundaries, performance. You make the architectural calls and defend them in review.
• Build our AI infrastructure from the ground up. We're early here — the foundations aren't built yet. Help us build them and they're yours to own and grow with as the company scales.
• You build it, you run it. Deploy, monitor, fix. Nobody hands your service off to an ops team.
• Mentor our junior engineers. Two of them, hungry and improving fast. Code review and pairing are part of the job, not something you squeeze in.

Our Stack

Kotlin · Spring Boot · React · GraphQL · PostgreSQL · AWS

You should be strong in most of this, or strong enough elsewhere that picking it up is a non-issue. AWS experience is a plus, not a requirement — you'll learn it here either way. We care about your systems judgment far more than your syntax.

What We Need

• 3+ years building and running backend systems in production. Two is fine if the work speaks for itself.
• Real production experience — you've designed schemas that outlived their first assumptions, debugged something ugly at scale, and have opinions about monitoring.
• Self-direction. You ask good questions, then go.
• Writing. Design docs, API documentation, clear PR descriptions. We're small and moving fast; writing is how we stay coordinated.
• Comfort with ambiguity. You'll make decisions on incomplete information and occasionally be wrong. Some of what you build in year one will get rewritten.
• Fluent in English. Speak, read, write clearly at a professional proficiency or better.

Bonus: supply chain, logistics, or accounting domain experience · microservices at scale · prior work shipping LLM-powered or agentic features · open source.

About us

Majura is a pre-seed startup founded by Silicon Valley transplants, building Agentic AI and SaaS products for Indonesia's logistics ecosystem. We're not a generic SaaS company — we're building infrastructure for Indonesia's $150B+ logistics market. Everything we build targets immediate, real-world impact.

Benefits

• Performance bonus structure based on milestones
• Learning budget for conferences, courses, and tools
• Hybrid: 3 days in our Surabaya office, flexible on the rest
• A CTO whose job is unblocking you and helping you grow