Senior Software Engineer, Backend (Java) - All Genders

Doodle; United States; Remote; USD 77,000 - 111,000; Full time

Job summary

Doodle in Germany is seeking a skilled Java backend engineer to design and deliver high-throughput, event-driven services that integrate with Go components and GraphQL APIs.

You will work across teams to ensure scalable, reliable data flows using Kafka, while exploring AI-assisted tooling and maintaining ownership of code. Visa and relocation not supported.

Qualifications

• Strong Java backend engineering experience across a codebase that includes Go services.
• Experience building distributed or event-driven systems; Kafka experience is relevant.
• Experience designing and serving APIs, ideally with GraphQL.
• A proactive approach to investigating unfamiliar code and taking ownership of delivered changes.
• Must be based in Germany and authorized to work there; visa sponsorship and relocation support are unavailable.

Responsibilities

• Build, deploy and maintain scalable, high-performance backend services in Java.
• Develop backend APIs, including GraphQL endpoints, with efficient data access and integration for frontend systems.
• Create event-driven solutions with Kafka to support responsive and reliable data flows.
• Trace workflows across services and understand how components interact throughout the distributed system.
• Use LLM and agentic tools to speed up development while reviewing and understanding the resulting code.
• Work with cross-functional colleagues to translate complex scheduling requirements into software.

Skills

Java backend

Go services

Kafka

GraphQL

API design

Ownership

Job description

Role overview

Design and deliver Java backend services for a high-throughput, event-driven platform. The role includes API development, distributed system design and understanding how services work together across a broader codebase. You'll work across technical and product boundaries to turn complex scheduling needs into reliable software, using AI tools while remaining accountable for the code you ship.

Responsibilities

• Build, deploy and maintain scalable, high-performance backend services in Java.
• Develop backend APIs, including GraphQL endpoints, with efficient data access and integration for frontend systems.
• Create event-driven solutions with Kafka to support responsive and reliable data flows.
• Trace workflows across services and understand how components interact throughout the distributed system.
• Use LLM and agentic tools to speed up development while reviewing and understanding the resulting code.
• Work with cross-functional colleagues to translate complex scheduling requirements into software.

Requirements

• Strong Java backend engineering experience, with the ability to work across a codebase that also includes Go services.
• Experience building distributed or event-driven systems; Kafka experience is relevant to the platform.
• Experience designing and serving APIs, ideally with GraphQL.
• A proactive approach to investigating unfamiliar code and taking ownership of delivered changes.
• Must be based in Germany and authorized to work there; visa sponsorship and relocation support are unavailable.

Benefits and work setup

• Work on high-throughput, distributed systems and technically challenging problems involving time and scheduling.
• AI and agentic development tools are encouraged as part of the engineering workflow.

The team values curiosity, autonomy and respect for personal time.