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, with experience building data-intensive, high-scale systems (high velocity and/or high volume data). 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 to ensure correctness of the business process. Contribute to multiple team-wide business and tech objectives. Lead cross-functional projects in an agile environment and participate in planning. Scope, decompose, and organize projects for teammates, delegate tasks, and coordinate completion. Generate time estimates with reasonable accuracy. Support standard development practices, including syntax, design patterns, and Testing/Quality Practice. Provide primary operational support and engineering for multiple large distributed software applications. Integrate with existing REST APIs, author new APIs, and expose data to the frontend.