Ever heard a job title at a tech company and just nodded politely? Same. This is a friendly, plain-English guide to what people actually do all day — across marketing, sales, product, engineering, and more.
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AI
Decides whether the model actually got better.
Eval engineers design the systems that score model outputs — golden datasets, automated graders, human review pipelines. Without them, AI teams can't tell whether yesterday's prompt change made things better or worse. A relatively new but increasingly critical role.
158 roles
Turns ad budget into actual humans who want a demo.
Decides what to call the thing and why anyone should care.
Writes the stuff that makes Google (and humans) pay attention.
Plays the long game with Google so you don't have to.
The reason your inbox has a 'welcome to…' email waiting Monday morning.
Protects how the company looks, sounds, and feels.
Runs the events sales reps actually want to attend.
The reason your company sounds like a person on LinkedIn.
Makes journalists care, and keeps the CEO out of trouble.
Runs experiments to make the funnel less leaky.
Turns happy customers into stories, references, and revenue.
The one who actually closes the deal.
The first human voice from the company you'll ever hear.
The technical brain on every sales call.
Designs the answer to 'can your product actually do what we need?'
Knows your competitors better than your competitors do.
Owns the customer after the sale — and grows the account.
Sells big, slow, complicated deals to giant companies.
Runs the team of AEs and lives and dies by the number.
Makes sure reps actually know how to sell the thing.
Builds the network of partners who sell on your behalf.
The reason your weird custom contract is even possible.
Decides what gets built and (politely) what doesn't.
The PM who works on problems no one else has even framed yet.
Builds the internal Lego pieces every other team uses.
Talks to users so the rest of the team doesn't have to guess.
Keeps the product team from becoming chaos.
PM who can read your pull request and have a real opinion.
Makes the product actually feel good to use.
Owns the look of everything that isn't the product itself.
Builds the Lego set every other designer uses.
Writes the words inside the product so they don't suck.
Makes things move in ways that feel right, not just flashy.
Builds the part of the app you actually click on.
Builds the invisible plumbing that makes everything work.
Comfortable from the database all the way to the button.
Builds the app that lives in your pocket.
Keeps the site up so engineers can sleep.
The reason your customer data isn't on Pastebin.
Finds the bugs before your customers do.
Manages the humans who write the code.
The technical compass for everyone else.
An engineer who makes other engineers love your product.
The reason your API docs don't make people cry.
Coaxes good answers out of large language models, professionally.
Ships real software by chatting with an AI co-pilot.
Builds the product features that are powered by LLMs.
Trains and ships the models powering personalization, fraud, and ranking.
Turns data into decisions (and sometimes models).
Decides which AI features are worth building (and not).
Pushes the frontier — fine-tunes, evaluates, builds new techniques.
Embeds AI into a specific business problem and ships it.
Decides whether the model actually got better.
Keeps ML models running in production at 3am.
Stops the model from doing something the lawyers will hate.
Makes sure customers actually get value (and renew).
The person who actually figures out why your thing is broken.
The first person who actually replies when you email support.
Gets new customers from 'signed contract' to 'actually using it.'
Owns the contract conversation when it's time to re-up.
Answers business questions with SQL and a calm demeanor.
Builds the pipes that move data around the company.
Turns raw data into clean, trustworthy models analysts can use.
Makes the company's data a real strategic asset.
The reason sales, marketing, and CS share the same numbers.
Owns the plumbing behind every campaign and form.
The exec's secret weapon for thorny strategic problems.
The exec's right hand who makes sure things actually happen.
The reason your benefits work and your offer letter arrives on time.
Builds the model that decides how much everyone gets to spend.
Makes sure the books are right and the auditors are happy.
Runs the team that runs the books.
Decides when revenue actually counts as revenue.
The person who actually pays your vendors.
The reason your customers actually pay you.
Manages the cash so it earns interest and doesn't sit idle.
Keeps the IRS (and 30 other tax authorities) off the company's back.
Makes sure the company isn't accidentally paying for 7 different note-taking apps.
Finds the people who'll do all the other jobs on this site.
The HR person who actually coaches managers.
Brings real data to People decisions.
Designs the training that makes the org smarter over time.
Designs the bands so people don't get paid wildly different amounts.
Builds programs so the company is actually a good place to work for everyone.
Writes the all-hands deck and the awkward 'we're reorging' email.
The company's top lawyer and the CEO's risk advisor.
Reviews and negotiates the contracts sales is desperate to close.
The reason your data practices don't get the company sued in the EU.
Owns SOC 2, ISO, and the audit prep nobody else wants to do.
Sets the vision, hires the team, and answers for everything.
Owns the numbers and the company's financial future.
The technical conscience of the company.
Owns the product roadmap and the product org.
Owns the number — sales, sometimes marketing, sometimes CS.
Owns the brand, the pipeline, and the marketing org.
Owns how the company itself shows up — not just the product.
The person who makes sure Gartner says nice things about you.
Co-markets with the partners that resell, integrate, or refer.
Figures out what the market actually thinks (vs what we hope).
The Gartner-side equivalent — covers a market, ranks vendors.
Built an audience of buyers — companies pay to borrow it.
Runs the Slack/Discord/forum where customers actually hang out.
Pulls off the conference, the booth, and the dinner without dying.
Owns how everything looks and feels — and defends it.
Markets to a list of 50 named accounts like each one is special.
Outbound prospector — cold emails, cold calls, cold LinkedIn.
Runs the SDR team — coaching, quotas, and career paths.
Closes smaller deals fully over Zoom and email.
Grows existing accounts — upsell, cross-sell, expansion.
Hunts whales — 6 to 12 month deals, multi-million ACVs.
Designs how the company sells — segments, motions, plays.
Owns the cross-functional engine — sales, marketing, CS aligned.
Sells through partners, not direct.
Sets the multi-year product bets — not the next sprint.
PM whose roadmap is signups, activation, retention.
Designs how the product flows — not just how it looks.
The frontend specialist who turns designs into pixel-perfect UI.
Designs how you talk to Alexa, Siri, and voice-first products.
On-site special-forces engineer for a single big customer.
Keeps the platform up at 3am — and prevents the next outage.
Paid to break in — legally, before the bad guys do.
Coaches engineering teams on process — and removes blockers.
Drives the cross-team engineering program no one PM can own alone.
Owns the first 30–90 days — gets new customers to first value fast.
Gets new users to their 'aha' moment — fast.
Builds the training, certifications, and academy customers learn from.
Paid implementation work — customers buy the team to set them up.
Finds the candidates recruiters then talk to.
Recruiter who specializes in engineering and technical roles.
The reason your interview loop actually happens on time.
Owns the new hire experience — week one through 90 days.
Owns performance, succession, and how careers grow.
Owns health insurance, 401k, leave, and all the other 'TBD's at offer time.
Makes sure everyone gets paid, correctly, on time.
Owns the HR system — Workday, Rippling, BambooHR, etc.
Runs the People team's processes, vendors, and systems.
RevOps, but for the recruiting team.
Models who the company needs, when, where, and at what cost.
Schedules and forecasts headcount in support, sales, and ops centers.
The CEO's analyst — markets, M&A, big bets.
Owns the long-term strategy — and often M&A and corp dev.
Runs the M&A pipeline — sourcing, diligence, integration.
Senior CFO chops, on retainer, for 2–4 days a month.
On-demand marketing leader for companies between hires.
Senior product leader on a part-time basis.
Slides and frameworks, deployed against your hardest problems.
Independent or small-shop consultant — deep specialty, no army of analysts.
Runs the agency-side relationship for a major client.
1:1 work with execs on leadership, blind spots, and growth.
The face of the brand on stages, podcasts, and timelines.
Builds the creator/influencer program top to bottom.
Hosts the company's podcast — a real show, not an ad.
Writes the LinkedIn posts, essays, and books execs 'wrote.'
Owns the editorial line — blog, video, podcast, social.
Runs the company's environmental and social commitments.
Stress-tests AI systems for bias, harm, and unintended consequences.
Runs the kitchen at a company with a real cafeteria.
Illustrators paid to create iconic brand moments (yes, like Google Doodles).
Someone says 'I'm a Sales Engineer' and you smile but feel nothing inside.
Search or browse. Each role gets a friendly explainer, not a job description.
Now you know what they actually do all day. Optionally: go find a job in it.