Software engineer cover letter tailored to the team’s stack
Engineering managers skim cover letters for one thing: can this person ship in our stack? This prompt has your todo.is agent read the job ad and the company’s engineering blog or changelog, then write a short letter that ties two of your real projects to the problems the team is working on.
The prompt
- Write a cover letter for the [JOB TITLE] role at [COMPANY]. Job ad: [JOB POSTING LINK]. My resume: [ATTACH OR PASTE YOUR RESUME]. My two strongest projects: [PROJECTS WITH YOUR ROLE, STACK AND RESULT]. Check the company’s engineering blog, GitHub or product changelog and mention one specific thing they are building. Match my experience to the languages and systems in the ad, include at least two numbers (latency, uptime, users, deploy time), keep it under 300 words, skip buzzwords and lines like "I am passionate about technology". Add my GitHub link [GITHUB OR PORTFOLIO LINK] under my name. Give me a Word file and a plain-text copy for the application form.
What to change
- [JOB TITLE]: The exact title, e.g. "Backend Engineer II" or "Senior Software Engineer, Payments".
- [COMPANY]: The company name. Your agent looks up its engineering blog, GitHub and recent releases.
- [JOB POSTING LINK]: Link to the job ad. If it needs a login, paste the full description instead.
- [ATTACH OR PASTE YOUR RESUME]: Attach your resume (PDF or Word) or paste the text.
- [PROJECTS WITH YOUR ROLE, STACK AND RESULT]: e.g. "Moved order service from Rails to Go, p95 latency 480ms to 120ms". Side projects count too.
- [GITHUB OR PORTFOLIO LINK]: Your GitHub, personal site or a project demo. Write "none" if you don’t have one.
Example result
- Priya Raman
- Toronto, Canada · priya.raman@email.com · github.com/priyaraman
- Dear Harborline Engineering Team,
- Your recent post on moving billing to an event-driven design caught my eye, because I spent last year doing the same thing at Quillpay. I would like to bring that experience to the Backend Engineer II role.
- At Quillpay I led the rewrite of our invoicing service from a Rails monolith into three Go services talking over Kafka. Invoice generation p95 latency dropped from 480 ms to 120 ms, and we cut failed payment retries by 31% because events were no longer lost during deploys. I wrote the migration plan, ran the dual-write period for six weeks, and on-boarded two junior engineers to the new codebase.
- Your ad mentions PostgreSQL at scale and on-call ownership. I tuned our main Postgres cluster (partitioning plus better indexes) to keep queries under 50 ms at 12,000 requests per minute, and I have been on a weekly on-call rotation for three years. My last postmortem led to a circuit breaker that has prevented two outages since.
- Outside work I maintain a small open-source Go library for idempotency keys (400 stars), which is how I learned to write docs people actually read.
- I would enjoy talking about how your team is handling exactly-once processing. Thank you for your time.
- Best regards,
- Priya Raman
- Why this works for engineering roles
- • The opening names their project, so it reads as written for this team only
- • Every claim has a number: latency, error rate, request volume
- • The stack in the ad (Go, Kafka, PostgreSQL, on-call) appears in context, not as a keyword list
- • One open-source line shows code quality without repeating the resume
How to do it with todo.is
- Copy the prompt and fill in each [bracket], including two projects you are proud of.
- Paste it on the Today screen in todo.is, or send it to your agent on WhatsApp or Telegram, and attach your resume.
- Your agent reads the ad and the company’s tech posts, then writes the letter as a Word file plus plain text.
- Reply with changes like "less backend, more frontend" or "make it 200 words" and it rewrites it.
Tips for a better result
- Lead with one project, not a list of languages. A single story with a before and after number beats ten keywords.
- Mirror the exact stack names from the ad (PostgreSQL, not "SQL databases") so ATS filters and recruiters both see a match.
- If you are a new grad, ask your agent to use your capstone, internship or a hackathon project with real usage numbers.
- Keep a master list of projects in your agent’s memory. For each new job it picks the two that fit best.
software engineer cover letter: FAQ
- Do software engineers need a cover letter? Many tech companies make it optional, but a short letter helps when you are switching stacks, applying to a small team, or don’t have a referral. Keep it under 300 words.
- What should a software engineer cover letter include? A specific reason you want this team, one or two projects with measurable results, the tools from the job ad you have used in production, and a short closing. Skip your full skills list; that belongs in the resume.
- Should I put my GitHub link in the cover letter? Yes, if it has real code you are happy for a reviewer to read. Pin your best repositories first, because most people only look at the top of the profile.
- Can it write a cover letter for a FAANG-style online form? Yes. Ask for a 150-word version too, which fits most "Why do you want to work here?" boxes.
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