# Software Engineer Cover Letter Examples & Tips > Software Engineer cover letter examples for experienced and entry-level applicants, a short version for email, and tips on what to write. | | | | --- | --- | | Job | Software Engineer | | Example resume | https://atsprep.com/ats-resume-template/software-engineer | | Rendered page | https://atsprep.com/cover-letter-examples/software-engineer | | This document | https://atsprep.com/cover-letter-examples/software-engineer.md | ## Software engineer cover letter example A senior backend engineer. Names the systems, their scale and what changed. ```text Dear Hiring Manager, I'm applying for the Senior Software Engineer role on your payments platform. At Tessel Payments, I run the ledger that settles $1.3B a year across 14 currencies, and I led it through two regional failovers in 2024 without losing or double-posting a transaction. Most of my work is making systems faster and calmer to run. I moved 38 services off a shared Postgres instance to sharded clusters, which cut p99 read latency from 410ms to 160ms and ended our weekly lock-contention pages. I also added OpenTelemetry tracing across 11 teams, so outages are now traced in minutes. Before Tessel, at Cartwheel Commerce, I built a Kafka inventory service handling 12K events a second to replace a four-hour nightly batch job, and cut AWS spend by $410K a year. Today I lead a four-engineer platform team. I'd enjoy talking through how I'd approach your platform's next stage. Best regards, Priya Raghavan ``` ## Entry-level software engineer cover letter example A new grad engineer. An internship and one shipped project instead of years of scale. ```text Dear Hiring Manager, I'm applying for the Software Engineer I role on your platform team. I graduate in December with a B.S. in Computer Science, and I spent this summer as a backend intern at a logistics startup. During the internship, I built an internal API in Python and FastAPI that lets the operations team look up a shipment's history in one call, replacing three database queries they ran by hand. It shipped in my eighth week and is still in use. For my capstone, I built a group study app in TypeScript and React that 200 students at my university used during finals. I'd love to learn from a team that writes code people rely on. My resume and GitHub are attached. Best regards, Daniel Osei ``` ## Short software engineer cover letter For an email body or an application form's text box. One paragraph of proof. ```text Dear Hiring Manager, I'm applying for the Senior Software Engineer role on your payments platform. At Tessel Payments I run a ledger that settles $1.3B a year, led it through two regional failovers without losing a transaction, and cut p99 read latency from 410ms to 160ms by moving 38 services to sharded Postgres. My resume has the detail. I'd enjoy talking. Best regards, Priya Raghavan ``` ## How to write a software engineer cover letter 1. **Open with a result, not an adjective.** A software engineer hiring manager decides in the first lines whether to keep reading. Put your strongest result there, with its number, as the example does: “At Tessel Payments, I run the ledger that settles $1.3B a year across 14 currencies, and I led it through two regional failovers in 2024 without losing or double-posting a transaction.” 2. **Name the skills the posting names.** Use the job ad's own words for your tools and methods, such as Go, Python and Java, and put each in a sentence with what came of it. A list of skills belongs on the resume. 3. **End on this employer, not on you.** One line on why this employer, then a plain close. The example ends: “I'd enjoy talking through how I'd approach your platform's next stage.” Change it for every application. ## What software engineer screeners look for - **Scope before stack** A hiring manager already assumes you can write code. What they cannot assume is the size of the system you wrote it for. "Built a payments service" and "Built a payments service settling $1.3B a year" describe the same work at two completely different levels. The second one gets the call. - **Latency, throughput, availability** These three numbers do more for an engineering resume than any adjective. p99 latency, requests per second, and uptime are the vocabulary of the people reviewing you. If you have them, put them in a bullet. If you do not have them, name the next best scope: users, records, services, dollars. - **The keyword filter reads your skills section first** Applicant tracking systems match on literal strings. "K8s" does not match a search for "Kubernetes", and "JS" does not match "JavaScript". Spell the technology out the way the job posting spells it, and keep it grouped so a human can still skim it in two seconds. - **One page, until it genuinely cannot be** Under roughly ten years of experience, a second page is almost always the first page written twice. This example stays under 400 words. That is deliberate — it leaves room for you to add your own detail without blowing the one-page budget. ## Skills to name Go, Python, Java, TypeScript, JavaScript, C++, SQL, Rust, Kotlin, distributed systems ## Questions ### What should a software engineer cover letter include? The job title and employer in the first sentence, then your strongest result with its number. A software engineer letter should show scope before stack, latency, throughput, availability and the keyword filter reads your skills section first. Close with one line on why this employer and a plain sign-off. ### How long should a software engineer cover letter be? One page at most. The experienced letter above is 153 words, the entry-level one 127 and the short version 65. Use the short one when you're pasting into an email or an application form. ### How do I write a software engineer cover letter with no experience? Lead with the closest work you have done, such as placements, internships, part-time jobs or a course project, and give each one a result. The entry-level example above shows how: a new grad engineer. An internship and one shipped project instead of years of scale. ### Can I write a software engineer cover letter for a career change? Yes. Open with the software engineer job you want, then pick two results from your current work that the new job needs, and say in one sentence what you're learning to fill the gap. The builder's Career change template is set up for this. ### What skills should a software engineer cover letter mention? Two or three the job posting asks for, each in a sentence with a result, such as Go, Python and Java. Leave out any you couldn't talk through in an interview. All cover letter examples: https://atsprep.com/cover-letter-examples ## About ATSPrep ATSPrep (https://atsprep.com) is a free resume and application workspace. Match experience to a posting, strengthen claims with evidence, and track the next action. Its PDF check shows text recovered by ATSPrep's extractor, not an employer's proprietary ATS or hiring decision. - **Price:** Free plan forever: your ATS score, every fix, job match, 3 AI rewrites and PDF downloads, with no card or watermark. Optional ATSPrep Pro ($9 once for 7 days, $12/month, or $29 once for 3 months) adds 300 AI edits a day, Fix all with AI, AI tailoring, Word downloads, all 13 templates and unlimited practice with Pip. - **Account:** none needed to import or edit a resume, or for its first check and 3 rechecks a day. A free sign-in is needed for PDF downloads (Word files come with ATSPrep Pro), to sync, and for more than 1 AI edit. - **Your file:** parsed and exported inside the browser. The resume file itself is never uploaded. - **Sent:** matching a job by meaning, on by default once you add a job (the lines involved). Only on a button press: AI edits (the lines involved), a job link (the link) and Pip voice calls (your speech). Never your contact details, and none of it is stored. - **Connection:** some tools load on first use and need a connection to download. Local storage is not a cloud backup. - **Accepts:** PDF, DOCX, TXT, Markdown, or pasted plain text. Start here: https://atsprep.com/studio