Post-Sales Engineer Resume
Skills & ATS Keywords

Aim for 30 to 40 specific languages, query tools, APIs and SDKs, observability platforms, IaC tools, and project systems grouped into 6 or 7 labeled rows. Under 24 reads thin for any Post-Sales seat above Junior; over 48 reads like a feature dump. Every line in the Skills row should resurface inside at least one shipped customer integration, escalation, or expansion bullet.

Customer integration delivery, REST and GraphQL APIs, webhooks, OAuth and SAML and OIDC, SQL, Python or TypeScript scripting, Datadog or Grafana or Sentry, Terraform or Helm or Kubernetes, Jira or Linear, escalation management, TTFV, and product feedback are the non-negotiables. Implementation project management, customer-facing post-mortems, and expansion signal publish separate Senior and Staff files.

Post-Sales Engineer (this page) is the umbrella post-deal technical owner: runs the integration from kickoff to steady-state, writes the API glue, debugs the customer data, owns the escalation chain, and stays on the account after go-live. Customer Success Engineer (CSE) overlaps but leans more commercial, with renewal and expansion as the headline outcomes. Forward-Deployed Engineer (FDE) writes production code at the customer site during the deployment cycle and usually rotates off after POC-to-prod. Sales Engineer is pre-sales: demos, discovery, PoC scripting. Solutions Architect draws the reference architecture and the migration plan. Implementation Engineer is the narrower subset focused on the build itself. If your week is a customer integration on Monday, a SQL debug on Wednesday, and a P1 escalation readout on Friday, you are on the right page.

Yes, the Post-Sales seat assumes hands-on integration work. Real REST and GraphQL calls, Python or TypeScript scripts to wire customer systems, an OAuth flow debugged in the browser, a Terraform module shared with the customer infra team, a SQL query against the customer warehouse. If your last 12 months read as pure project coordination with no integration code, the screen will route you to an Implementation PM page, not a Post-Sales Engineer page. Surface 3 or 4 concrete artifacts (an API integration you stood up, a Python script that bridged two customer systems, a Helm chart you tuned, a webhook subscription you debugged) inside your bullets.

Quote the integration count you owned (22 enterprise integrations across 14 accounts), the TTFV improvement on a customer cohort (median TTFV cut from 9 weeks to 5 on the Enterprise tier), the escalation closure delta (P1 median closure 4.2 days down from 8.1), and the ARR you retained or expanded (3.2M ARR retained through 2 churn-risk saves, 1.8M expansion sourced through integration unlocks). A line like "Delivered 22 enterprise customer integrations across 14 accounts, cut median TTFV from 9 weeks to 5, and retained 3.2M ARR through 2 churn-risk integration saves in the same year" reads at the Senior band.

Both have to be on the page, but in 2026 the integration-code signal is what splits Post-Sales Engineer from a pure Implementation Project Manager in the screen. A file that leans on milestone counts, status decks, and customer kickoffs without naming an API, an IaC tool, or a script reads as project coordination reaching for the Post-Sales label. Pair the project work with the integration artifact that closed it (a Terraform module that unblocked the customer deploy, a Python ETL that bridged the customer warehouse to your product, a webhook flow that turned 3 escalations into 1 root-cause fix). Run the file through an ATS Checker to confirm the parse.

Junior Post-Sales seats exist, but the band skews heavier toward Mid and Senior than most engineering tracks. The path in is usually one of three: a Tier 2 or Tier 3 support engineer with strong API debugging who moves up the same vendor, an Implementation Engineer who picked up enough product-eng range to own steady-state, or a new-grad in a structured post-sales rotation at a larger platform vendor (Snowflake, Datadog, MongoDB, Stripe run these). Junior Post-Sales engineers do not own a customer book alone, but they do own integration debugging, the first wave of customer onboarding scripts, the IaC drafts, and the assist role on P1 escalations. Most openings still land in the Mid to Senior band, so claiming Senior scope from a Junior seat reads as fiction.