Job Description

Role Description

As a Senior Language Runtime Engineer , you will build and evolve the Nexus interfaces for the Temporal SDKs —the primary way developers interact with Temporal. Nexus is Temporal’s durable execution framework for orchestrating work across team and application boundaries, providing improved modularity, security, debuggability, and fault isolation. Building Nexus into each SDK is a deep engineering challenge: these are not thin clients but full-fledged runtime environments that execute user workflows, manage durable state transitions, and coordinate closely with the Temporal Server.

You will design and implement Nexus APIs and runtime behaviors across multiple languages, ensuring developers can easily compose, invoke, and integrate durable workflows using clear, idiomatic interfaces. We are looking for someone that loves programming languages and is a strong polyglot with deep domain expertise in at least 2 of the following languages:

• Python
• TypeScript
• .NET
• Ruby
• Rust

This role will be central in delivering new Nexus-powered features such as advanced durable execution patterns, async processing, and support for invoking workflows via industry-standard protocols. Most of this work is open source—explore it at GitHub —and you’ll collaborate closely with other SDK engineers to deliver a unified, delightful experience for our polyglot developer community.

Qualifications

• At least 7 years of experience in a production environment as an "Arranger" and/or "Builder/Enhancer" of highly scalable distributed systems.
• Solid computer science fundamentals in distributed systems concepts including multi-threading and concurrency.
• Experience writing concurrent code in production with languages like Go, Java, Python, TypeScript, .NET or other applicable languages with skill level as "high end of Intermediate" and/or "Advanced" or "Expert" levels.
• Experience designing APIs, SDK libraries or working with Open Source Systems.

Requirements

• Take end-to-end ownership of new features, working with others in the Nexus and OSS teams to deliver exceptional reliability and a great developer experience.
• Design and build Nexus interfaces for the Temporal SDKs used by customers to work with Temporal in their programming language of choice.
• Tightly integrate Temporal SDKs with their respective languages, making best use of type systems and language runtimes, to execute application code in a durable, deterministic way.
• Develop features that provide a foundation for the reliable execution of the current wave of agentic AI systems.
• Work directly with our community to debug issues that need expert attention, and get feedback on Temporal SDK features and APIs.
• Write publicly-readable technical documentation describing Temporal concepts and APIs.
• Travel to meet your coworkers for a week once or twice a year.

Benefits

• Unlimited PTO, 12 Holidays + 2 Floating Holidays
• 100% Premiums Coverage for Medical, Dental, and Vision
• AD&D, LT & ST Disability, and Life Insurance (Standard & Supplemental Available)
• Empower 401K Plan
• Additional Perks for Learning & Development, Lifestyle Spending, Home Office Setup, Professional Memberships, WFH Meals, Internet Stipend and more!

International Benefits: Paid Time Off (PTO) and Benefits outside the United States vary by country, and are issued in partnership with Remote.com. Additionally, Temporal offers perks to all international employees for learning & career development, a lifestyle spending account, home office setup, professional memberships, work-from-home meals, and access to the Calm app for mental wellness.

Travel

Temporal is a globally distributed, collaborative team that values opportunities for in-person connection. Occasional travel may be required for company events, team offsites, and other meaningful moments that bring us together.

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