Software Engineer Cover Letter Example & Writing Guide

Dear [Hiring Manager],

I am writing to express my strong interest in the Software Engineer position at [Company Name]. With over five years of experience building scalable web applications and distributed systems, I am confident that my technical expertise and collaborative approach make me an excellent fit for your team.

In my current role at a mid-size SaaS company, I architected and deployed a microservices platform that reduced API response times by 40% and supported a 3x increase in daily active users. I led the migration from a monolithic Rails application to a React and Node.js stack, collaborating with cross-functional teams to ensure zero downtime during the transition. My experience spans the full development lifecycle, from requirements gathering and system design to CI/CD pipeline optimization and production monitoring.

What excites me most about [Company Name] is your commitment to engineering excellence and your investment in developer experience. I am particularly drawn to your work on real-time data processing, and I believe my experience with event-driven architectures using Kafka and AWS Lambda would allow me to contribute meaningfully from day one. I thrive in environments where code quality, peer reviews, and continuous improvement are part of the culture.

I would welcome the opportunity to discuss how my background in full-stack development, performance optimization, and technical mentorship can help [Company Name] achieve its engineering goals. Thank you for considering my application, and I look forward to hearing from you.

Sincerely, [Your Name]