Senior Backend Developer with leadership experience - Freelance

8+ years of professional software engineering experience, including senior-level responsibility Proven experience leading and mentoring engineers Ability to operate independently and guide teams Strong proficiency in backend development using SQL/Postgres and one or more of: Java, Go, Node.js Deep understanding of data structures and algorithms Experience building data-intensive, high-scale systems Hands-on experience with cloud infrastructure and DevOps tooling (Terraform, Pulumi, Helm, GitHub Actions) Experience with SQL-based data analysis and data platforms (e.g., Snowflake, BigQuery) Familiarity with data pipelines Experience designing and operating message-based, asynchronous systems Frontend experience with JavaScript and SPA frameworks (e.g., React, Vue) in production environments Production experience with public cloud platforms (Azure preferred) Strong communication and interpersonal skills

Design, develop, test, and deploy high-quality software solutions Implement system and data monitors Contribute to team-wide business and tech objectives Lead cross-functional projects in an agile environment Scope, decompose, and organize projects for teammates Delegate tasks and coordinate teammates Generate time estimates for project timelines Support standard development practices Provide primary operational support and engineering for large distributed software applications Integrate with existing REST APIs, author new APIs, and expose data to the frontend