Launching a niche job board with an API: what to validate first

Choose a niche around a difficult decision

“A job board for nurses” identifies an occupation. “A board that helps newly qualified nurses find roles in Ontario that do not require previous hospital experience” identifies a problem you can help solve. The second version suggests what to collect, which filters matter and why someone might use your product again.

Start with people you can speak to. Ask them to walk through a recent search. Which jobs looked promising but turned out to be irrelevant? Which requirements were hard to find? Did a supposedly remote role require office attendance? Did the application link lead to a closed requisition? These answers are more useful than asking whether they would like another job board.

Choose one geography and one primary job family for the first release. You can expand when the supply and workflow work. A narrow starting scope also lets you manually review results and understand why the search succeeds or fails.

Write inclusion rules a second person can apply

Imagine a board for entry-level data analysts in Canada. Searching only for “analyst” will return financial analysts, business analysts and senior roles. Searching only for “junior data analyst” may miss relevant positions called reporting specialist or analytics associate. Use titles to retrieve candidates, then inspect the description for the actual work and requirements.

Create three outcomes: include, exclude and review. A role explicitly requiring five years of experience is excluded from an entry-level board. A role with no experience requirement may need review; absence of a seniority label does not make it entry level. Preserve the reason for each decision so you can refine the rules without losing the evidence.

These are example editorial rules, not a universal classification system. Publish your board’s scope in plain language. A reader should understand what the board includes and what it may miss.

Run an inventory study before committing to a build

Sample the jobs your rules admit on several dates. Count relevant distinct vacancies and employers, and record rejected rows with reasons. Include several sources and employer sizes. If most of the inventory comes from one employer, a change to that employer’s feed can materially change your product.

Suppose an illustrative sample returns 120 rows. After review, 82 fit the topic, seven are repeated copies, and five of the remaining records lack a usable application destination. You have 70 publishable vacancies in this sample. Whether 70 is sufficient depends on the audience, how quickly jobs change and the alternatives readers already use. It is not a universal launch threshold.

Review how much useful inventory arrives over time. A one-time collection of 1,000 older roles may produce less reason to return than a smaller set with meaningful weekly additions. Keep newly discovered jobs separate from employer-posted dates when reporting this. The worksheet provides a place for both the inventory evidence and the gaps.

Build a small but complete application journey

Your first release needs search results, a useful job page and a working way to reach the employer’s application process. On a result card, prioritize title, employer, location or remote restriction, employment type and clearly sourced pay when present. On the detail page, keep the full requirements readable and make the source accessible.

Use apply_url when it is available and appropriate; otherwise send the reader to the original job URL. Do not hide the fact that an application happens on another site. Test the destination on mobile as well as desktop. A beautiful card is not a successful journey if it ends at a generic careers homepage.

Treat missing values as normal states. “Salary not provided” is more useful than an unexplained empty box. “Remote within Canada” is more useful than a broad remote badge when that restriction is in the source. Show a clear closed-job state for saved links, with relevant active alternatives if you have them.

Keep your source data and editorial decisions distinct

Store the provider’s identity, job ID, country view, original URL, all locations, full description and timestamps. Keep your own relevance decision, reason, display status and review date alongside them. This lets you update a source record without silently overwriting an editor’s decision, or reconsider a decision when the requirements change.

A country view can be part of identity: a vacancy appearing in both Canadian and US feeds may have different IDs. Use a composite key such as provider, country and job ID for ingestion. Cross-country grouping is a separate task that needs source evidence. Do not merge jobs solely because the employer and title look alike.

Keep the API key on the server. Sanitize source HTML before rendering it, retaining useful paragraphs and lists while removing executable content. Cache or store records according to your provider agreement. A simple database and server-rendered pages can be enough for the first version; add a search service only when your actual query and scale requirements justify it.

Source record: provider + country + job_id + payload + fetched_at
Editorial review: job key + decision + reason + reviewed_at
Public projection: job key + visible fields + display_status
Sync state: stream key + checkpoint + last_success_at
Delivery work: job key + projection_version + pending actions

Choose an import and maintenance strategy together

Do not finish the import and only then ask how jobs will be removed. Choose how to get the initial active set, how new records arrive, how modifications are applied, and how closed or excluded jobs leave the board. Those decisions determine the fields and state you need to keep.

The Jobs API offers filtered time-window feeds and an ordered change feed. The ordered stream is per country, so a board with a few hundred matching jobs should not assume it receives only changes for those jobs. Compare the record usage of both approaches. Store a separate cursor per country if you use the ordered stream, and preserve your own inclusion rules for every update.

The 6m feed window covers active jobs first collected within 183 days. Check whether your desired inventory needs older records rather than assuming a date-bounded backfill is a timeless snapshot. Use the documented search and feed semantics for the endpoint you choose: their pagination formats are different. A short /v1/jobs page is not necessarily the end.

• Documented import and feed strategy
• Search pagination
• Expiry and replay design

Design pages that deserve to be found

Create pages around tasks you can satisfy. A page for entry-level analyst jobs in Ontario can combine relevant active roles with a short explanation of your entry-level criteria. A page for a city with no inventory should offer a useful next step instead of pretending to have a comprehensive selection.

Choose a stable canonical URL for each public job. Avoid creating indexable duplicates for every sorting and tracking parameter. Use internal links that let readers move from a relevant category to a job and back. Keep the important content available in rendered HTML so readers and crawlers can access it reliably.

Google’s JobPosting documentation applies to individual eligible job pages. The structured data must agree with the visible posting; it belongs on the job detail page, not a category list. Follow its requirements for descriptions, application access and expired jobs. Markup makes a page eligible for a feature; it does not guarantee a result.

• Google’s JobPosting requirements

Make a cost model before choosing the largest plan

Estimate the first month and a steady month separately. Your first month might include 3,000 initial records, 600 new records, 900 modifications, 500 detail reads and 400 rechecks: 5,400 returned records in this hypothetical example. If descriptions arrive in the initial response, you may not need a separate detail call for every job.

Then count API requests. A job board that queries the upstream API for every visitor can exhaust its request budget even with a modest inventory. Serving your own permitted cached projection reduces that coupling. Include email, hosting, editorial review and support costs; the API subscription is only one part of operating the product.

Model revenue with explicit assumptions rather than a promise. If you charge employers for featured posts, estimate the number of paid placements required to cover monthly costs. If the board is part of a membership product, decide what recurring benefit makes membership useful. Pageviews alone do not establish either business model.

Use a release gate and a small reader test

Before launch, ask several people from the target audience to find three suitable jobs and explain why they qualify. Watch where they hesitate. If they cannot judge location eligibility or experience requirements, fix the information design before adding more landing pages. Keep the test focused on completing the task rather than rating the appearance.

Run the operational failures deliberately in a test environment. Replay an imported page and confirm there are no duplicates. Fail a sync request and check that the checkpoint stays put. Close a sample job and verify it disappears from search, cached results and queued alerts. Update a role so it no longer fits the niche and check that it leaves the board.

After launch, track useful searches, empty searches, detail views, application-link clicks and returning readers. An outbound application click does not prove an application was completed. Define each metric honestly, and use reader feedback to decide whether the next investment should be better inventory, clearer filters or stronger distribution.