Senior Backend Engineer

Clera

Munich, Germany

On-site

Who this role is best for

Geared toward candidates with strong infrastructure and distributed systems experience comfortable with building secure, high-performance sandboxes and multi-tenant data systems.

Best fit for

Candidates with 3 to 10+ years of experience in building and operating production backend systems and a background in infrastructure or code execution platforms.
— “3 to 10+ years of experience building and operating production backend systems.”
Individuals who have designed multi-tenant systems with a focus on durability, cost, and failure prevention.
— “Experience designing multi-tenant systems, with strong instincts for durability, cost, and limiting the impact of failures.”
Professionals with hands-on expertise in sandboxing and OS-level isolation, including containers and untrusted code execution.
— “Hands-on expertise with sandboxing and OS-level isolation, including containers, Linux internals, and safely running untrusted code.”

Things to consider

On-site requirement in Munich, with limited flexibility for remote work despite mentioning Warsaw as a possible location.
— “On-site in Munich, Germany, with Warsaw, Poland also listed as a work location.”
No visa sponsorship is available, which may limit eligibility for non-EU candidates.
— “Visa sponsorship is not available.”

How to stand out

Highlight experience with Python services and tools like Modal in your resume and interviews.
— “Experience building Python services and working with infrastructure such as Modal.”
Demonstrate a track record of resolving integration failures and improving system design accordingly.
— “Find and resolve integration failures, then improve system design to prevent them from recurring.”
Emphasize your ability to work with leadership and users to make rapid technical decisions.
— “Work closely with company leadership and users to make technical decisions and deliver improvements quickly.”

Pace · SteadyCollaboration · MediumAutonomy · MediumDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

Skills & requirements

Required

Distributed SystemsProduction ReliabilityPythonSandboxingLinuxOAuthAPI IntegrationsMulti-tenant Systems

Preferred

ContainerizationCloud ServicesDevOps

Stack & domain

PythonOAuthWebhooksRate LimitsThird-party API IntegrationsMulti-tenant SystemsContainersLinux InternalsUntrusted CodeModal

About the role

Original posting from Clera via Ashby

ABOUT THE ROLE
Build and operate the backend systems that help AI agents reliably carry out work through connected tools. You will own core infrastructure across integrations, secure execution environments, and multi-tenant data, with a direct impact on product reliability and customer outcomes.
WHAT YOU'LL DO
Design and operate a tool gateway that exposes connected APIs and MCPs through a composable Python SDK, including routing, authentication, rate limits, and reliability.
Run persistent, isolated Linux sandboxes for workspaces, with attention to security, autoscaling, and cost.
Build and maintain durable, high-performance data systems for multi-tenant workspace state and persistence.
Find and resolve integration failures, then improve system design to prevent them from recurring.
Work closely with company leadership and users to make technical decisions and deliver improvements quickly.
WHAT WE'RE LOOKING FOR
3 to 10+ years of experience building and operating production backend systems.
Strong experience with distributed systems, production reliability, and designing for failure at scale.
Hands-on expertise with sandboxing and OS-level isolation, including containers, Linux internals, and safely running untrusted code.
Experience building Python services and working with infrastructure such as Modal.
Practical experience with OAuth, webhooks, rate limits, and third-party API integrations.
Experience designing multi-tenant systems, with strong instincts for durability, cost, and limiting the impact of failures.
Background in infrastructure, platform, developer tools, or code execution systems, and an ability to learn and ship in a fast-moving environment.
COMPENSATION & BENEFITS
Visa sponsorship is not available.
LOCATION
On-site in Munich, Germany, with Warsaw, Poland also listed as a work location.

Source: Clera careers (Ashby)