# Senior Java Engineer

[Quantummachines](https://gurify.com/jobs?q=Quantummachines) · Tel Aviv-Yafo, Israel · Posted 2 months ago

Senior

[Java](https://gurify.com/jobs/java)

[Apply on the original posting → (opens in a new tab)](https://www.comeet.com/jobs/quantummachines/D6.000/backend-engineer/13.05B)

## Job description

Quantum Machines is a global leader in control systems for quantum computing, scaling from individual qubits to arrays of thousands.

We're looking for a hands-on Tech Lead to drive the technical direction of our core backend layer and lead the engineers building it. The systems you'll own handle bursty, high-throughput workloads: thousands of requests per second, strict latency requirements, distributed coordination, hard concurrency problems. You'll shape the architecture, review the designs, and still write the code.

### What Makes This Role Different

### Our backend team is the orchestration layer between:

- Hardware control systems (C++)

- Client-exposed SDK (Python)

- Reporting and management system (Go)

- Business logic (Java/Kotlin + Spring)

As Tech Lead, you're the technical anchor of that layer. When teams disagree on where a boundary belongs, you drive the decision. When a design has a flaw nobody's spotted, you catch it. When the hardest problem lands, you're close enough to the code to pick it up yourself.

### Requirements

### Requirements

- 8+ years building backend systems in Java/Kotlin, including experience leading the technical work of a team

- You still write code, and you're good at it - this is not a management-only role

- Deep concurrency expertise: race conditions, lock ordering, async patterns - and you can teach others to reason about them

- Architecture at system scale: throughput, distributed coordination, performance trade-offs

- Design review leadership: you can take apart a design constructively and propose one that will hold

- A track record of mentoring engineers who got better because of you

- You treat code quality as a system property, building the standards and culture that sustain it

### Strong Plus

- Spring experience

- gRPC-based communication

- Python programming

- Experience in polyglot environments

- AI coding agent experience, with opinions on how a team should use them well

- Experience with real-time, low-latency, or hardware-adjacent systems

### You'll Thrive Here If You

- Lead through reasoning, not title

- Ask questions when requirements are unclear, rather than guessing

- Know when to insist on "right" vs. "good enough to ship"

- Give direct, kind feedback

- Communicate clearly, including to non-backend audiences

**Live in Quantummachines’s hiring system.** Read from the company's own applicant tracking system, not reposted from a job board — so it's a real, open requisition rather than an ad that outlived the role.

We remove it as soon as it disappears at source.

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