Senior Software Engineer (Backend)
Connexity
Santa Monica, United States Posted September 16, 2026
Check how well your resume matches this job
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
Similar Jobs
Software Engineer, C++
Anduril
Scientific Software Engineer
Anduril
Senior Software Engineer - OTC Trading
Flow Traders
Senior Software Engineer
Abbott
How to apply
You apply on Connexity’s own careers site. No account needed.
Apply on company siteUpload your resume and ARes scores it against this job in a few seconds. No account needed.
Already have access? Sign inAbout Connexity
See every open role at Connexity on ARes.
More Jobs at Connexity