Backend Developer Cover Letter Template

Dear Hiring Manager, I’ve spent the last few years building reliable server-side systems that handle high traffic with steady response times. At my current role, I migrated a monolith to a microservices architecture and reduced mean time to recovery by 40 minutes during peak periods. For this role at [Company Name], I’m drawn to the chance to apply practical Python and Java work to a team that values clean APIs, robust databases, and thoughtful security controls. I’ve got solid experience with Python, Java and C#, plus PostgreSQL and MySQL databases. I’ve implemented REST and GraphQL APIs, managed cloud resources, and kept services running with proper monitoring and alerting. I’m comfortable with containerised deployments, CI/CD pipelines, and basic server hardening. I’m keen to contribute to scalable solutions and to collaborate on code reviews and architecture decisions. In a recent project at [Previous Company], I led the effort to decouple a data pipeline from a legacy system, which involved rewriting critical endpoints and validating data integrity across services. The result was a more stable data flow and significantly improved developer velocity, with faster onboarding for new team members and fewer integration issues in staging. I’m available to chat about how I can help [Company Name] with reliable backend services and secure, scalable APIs. If you’d like, I can come in for a discussion next week. Kind regards, [Your Name]