Senior Software Engineer (Backend)

Connexity

Santa Monica, United States Posted September 16, 2026

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On-site Full-time Senior
Salary Range

$160,000 - $185,000

Job Description

Join our Internal Tools team as a Senior Software Engineer (Backend). You will be instrumental in designing and implementing our next-generation internal tools platform, focusing on high-performance middleware and backend services. Your responsibilities will include backend development, architecture and design, data modeling, collaboration with cross-functional teams, problem-solving, maintaining code quality, and staying current with industry trends. You will need 6+ years of professional experience in backend development, proficiency in Java, and strong expertise in relational databases.

  • Design, implement, and maintain scalable backend systems, including APIs, microservices, and server-side components.
  • Contribute to the architecture and design of backend systems, ensuring solutions are reliable, scalable, and performant.
  • Collaborate with cross-functional teams to define and implement new features and improvements, and troubleshoot complex technical issues.
  • Problem-Solving: Strong analytical and problem-solving skills with the ability to tackle complex technical challenges
  • Experience: 6+ years of professional experience in backend development, with a track record of designing and delivering high-performance systems
  • System Design: Strong understanding of software architecture, design patterns, and system design principles. Experience building and maintaining distributed systems and microservices
  • Programming Languages: Proficiency in Java is a must. Experience with additional languages (e.g., Python, Node.js, Go) is a plus
  • API Development: Solid knowledge of RESTful API design, best practices, and implementation
  • AI-Assisted Development: Practical, hands-on experience using AI coding tools (e.g., Claude Code, GitHub Copilot, Cursor) as part of your daily development workflow — for code generation, refactoring, test writing, and debugging. You should be able to critically evaluate AI-generated code, recognize when it is wrong or subtly unsafe, and take full ownership of everything you ship. Experience integrating LLM APIs into applications or building internal AI-powered tooling is a plus
  • Backend Frameworks: Hands-on experience with Spring Boot is a must
  • Database Skills: Strong expertise in relational databases (e.g., MySQL, PostgreSQL), including schema design, query optimization, and reasoning about data integrity and consistency. Experience with NoSQL databases or analytical warehouses (e.g., BigQuery) is a plus
  • Education: A degree in Computer Science, Engineering, or a related field is preferred but not required
  • Collaboration: Excellent communication and interpersonal skills with a proven ability to work effectively in a team environment. Experience working in Agile methodologies
Required Skills
software development data architecture collaboration cross-functional collaboration problem solving Java microservices troubleshooting system design design patterns distributed systems Python Node.js REST API Claude Code GitHub Copilot
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