Skip to content
§
§ · hiring guide

How to Hire a Real World Evidence Platform Development Company

Buy the factory, not the data. Expect $110,000 to $230,000 and 14 to 20 weeks for a first release covering ingestion of two or three licensed assets, mapping to a common data model and versioned cohort definitions with a reproducible execution record.

BI Dashboard Development architecture and database illustration for Real World Evidence Platform Development.
The short answer

Buy the factory, not the data. Expect $110,000 to $230,000 and 14 to 20 weeks for a first release covering ingestion of two or three licensed assets, mapping to a common data model and versioned cohort definitions with a reproducible execution record. Start with a paid discovery phase that decides your common data model in writing.

A payer analyst re-runs your cohort and lands on a different denominator. The original analyst has moved teams, the claims extract has refreshed twice, and the code set for the indication is in a spreadsheet with a tab named final_v2_use. That conversation arrives about nine months after the vendor invoice was paid, and it is the only test the platform ever really gets.

What makes this category hard to buy is that the boundary between what you licence and what you build is the whole decision, and most vendors will not draw it for you. Health data engineering firms know OMOP and have never enforced a data licence term. Clinical software firms build electronic data capture and registries and think in protocols. General agencies see a data warehouse and quote one. Meanwhile Flatiron, Komodo, TriNetX, Datavant and Aetion are all serious and all solve a different slice, and a sponsor who licences three assets and runs rigorous work inside a fourth vendor environment ends up with four contracts and a reproducibility story that depends on somebody else release notes.

What a real world evidence platform development company actually does

The part you get shown is a cohort builder and a results view. That is a small fraction of the effort.

The rest looks like this. A separate ingestion path per licensed asset, because delivery cadence, schema and refresh semantics differ by vendor and a refresh that silently changes a denominator is the failure mode you are buying protection against. Mapping to a common data model, usually OMOP from the OHDSI community, with Sentinel or PCORnet where the ecosystem requires them, while keeping a source faithful layer underneath so an analyst can always check what the original record said. Phenotypes and cohorts as versioned first class objects with an identifier, an owner, code sets across ICD-10-CM, CPT, HCPCS, NDC, RxNorm, LOINC and SNOMED CT, a written clinical rationale and a validation record, so a study references versions rather than inlining codes. Execution pinned to a data snapshot, so a published figure can be reproduced exactly. Licence terms held as structured attributes covering permitted purposes, permitted user groups, retention end dates, minimum cell size and geographic constraints, with output suppression and deletion tasks enforced by the system rather than by an email from legal. Open and closed claims carried as dataset metadata and surfaced during study design. And note extraction validated per variable against a manually abstracted gold standard sample.

What it really costs in 2026

These figures come from Digital Heroes delivery work. They set the range to expect, not a price for your evidence programme.

Project tierCostTimeline
One licensed asset mapped to a common data model with a definition library$70,000 to $140,00010 to 14 weeks
First release: two or three assets, versioned phenotypes and cohorts, reproducible execution record$110,000 to $230,00014 to 20 weeks
Full platform: tokenised linkage, licence enforcement, note extraction, regulator and payer packaging, compute governance$300,000 to $750,0009 to 16 months
Support, vocabulary refreshes and onboarding new data assets15 to 20 percent of the build annuallyOngoing

Two line items are almost never quoted.

The first is vocabulary maintenance. Code systems version on their own schedules: ICD-10-CM changes take effect on 1 October each year in the United States, and the OMOP vocabulary releases on a separate cadence again. A phenotype that was correct at go live drifts, and a drifting phenotype moves a denominator without anyone noticing. What you need budgeted is an annual re-mapping plus a regression run of every published cohort against the new vocabulary, with differences reported rather than absorbed.

The second is compute and storage governance. Keeping the source faithful layer alongside the common data model roughly doubles storage, and a single careless full scan of a national claims table can cost more than a week of engineering. Ask for query cost controls, pinned snapshots and a per study cost view in the first release rather than after the first invoice surprises your finance team.

Signals of a strong partner

  • They ask to read one data licence before quoting. Permitted purposes, named user groups, minimum cell size and deletion at contract end are software requirements, not legal paperwork.
  • They treat the common data model as a decision with consequences. OMOP brings vocabulary assets and tooling and loses some source nuance, and a firm that presents it as an obvious default has not thought it through.
  • They raise open versus closed claims unprompted. Capture completeness changes denominators and persistence measures, and it belongs on the dataset as metadata.
  • They insist the source layer is retained. Discarding it to save storage removes your only answer during a methods challenge.
  • Their position on language models is narrow. Note extraction validated per variable against a gold standard sample, never a model deciding eligibility.
  • They keep your data vendors in place. Flatiron and Komodo are good at producing assets. You are buying the governed factory that joins them.
  • Ownership is agreed before any code exists. Digital Heroes contracts through an India LLP, a US LLC and a UK LTD, so the definition library assigns under your own law and lives in your repository from day one.

Red flags

  • Reproducibility is described as version control on scripts. Re-executing to the same figure needs pinned snapshots and versioned definitions, not a repository with good hygiene.
  • No mention of cell size suppression. Small cell output is a licence and privacy exposure, and it must be enforced by default rather than remembered by an analyst.
  • They propose replacing your data assets with their own pipeline. Curation is a business you should be buying, not rebuilding.
  • Extraction accuracy is quoted as one aggregate number. Performance varies enormously by variable, and an aggregate figure hides the variable your study depends on.
  • Nobody asks who audits you. Data vendors reserve audit rights, and a platform that cannot produce a coverage report turns an audit into a search.

Questions to ask on the first call

  1. Here is one data licence. Which terms would you enforce in software, and how?
  2. How would you re-execute a study published nine months ago and prove the figure matches?
  3. What is your position on OMOP against Sentinel or PCORnet for our therapeutic area?
  4. How do phenotype versions relate to cohort versions and to study versions?
  5. How does the platform carry the difference between open and closed claims into study design?
  6. How would you validate note extraction, and what per variable performance would you report?
  7. What stops one analyst query scanning an entire national claims table?
  8. How is tokenised linkage handled without identifiers moving between parties?
  9. Who owns the repository, the definition library and the cloud accounts the day this engagement ends?

A simple way to decide

Do not decide on proposals. Fund four to six weeks of discovery with each of your two strongest candidates and insist the written specification is yours, whatever happens next.

For an evidence team that specification should contain the common data model decision with its rationale, an asset inventory with licence terms expressed as enforceable attributes, the phenotype and cohort object model, the execution and snapshot design that makes a published figure reproducible, the extraction validation plan with per variable targets, and a compute governance approach with cost controls named.

Be honest about scale before spending. If you run one feasibility question a quarter, TriNetX will answer it and Aetion is worth licensing when a study needs rigour, and a build is the wrong purchase. The case for building starts when you licence several assets under different contracts and your evidence has to survive a regulator or a payer analyst re-running it. Digital Heroes works PRD first for that reason and is verifiable through D-U-N-S, Clutch and Trustpilot rather than claims on its own site. The specification is yours whatever you decide.

Book a 30-minute call with Digital Heroes and get a written plan and a fixed quote within 48 hours.

Research & sources

The evidence behind this guide

Independent findings on why this investment pays off. Every link goes to the primary source.

  1. In a survey of 113 supply chain leaders (conducted late March to mid-April 2022), 67% had implemented digital dashboards for end-to-end visibility, and those companies were about twice as likely as others to avoid supply chain problems during the disruptions of early 2022; 71% expected to revise inventory policies going forward. Source: McKinsey & Company (2022) →
  2. Flexera's 2025 State of the Cloud Report (survey of 750+ technical and executive leaders) found that 84% of respondents believe managing cloud spend is the top cloud challenge for organizations today, with cloud budgets already exceeding limits by 17%. Source: Flexera (2025) →
  3. Total US training expenditure rose 4.9% to $102.8 billion; learning management systems were used at 89% of organizations (90% of large, 97% of midsize, 84% of small companies), with average training at 40 hours per employee and $874 spent per learner. Source: Training Magazine (2025) →
  4. Digital Champions expect to achieve about 16% in cost savings and around 15% in revenue gains from digital operations over five years; the study surveyed 1,155 manufacturing executives across 26 countries. Source: PwC / Strategy& (2018) →
FAQ

Frequently asked questions

How much does it cost to hire a real world evidence platform developer?

One licensed asset mapped to a common data model with a definition library runs $70,000 to $140,000. A first release with two or three assets, versioned phenotypes and a reproducible execution record runs $110,000 to $230,000 over 14 to 20 weeks. A full platform adding tokenised linkage, licence enforcement, note extraction and regulator packaging runs $300,000 to $750,000 across nine to sixteen months.

What gets left out of real world evidence platform quotes?

Vocabulary maintenance and compute governance. Code systems version on their own schedules, so a phenotype correct at go live drifts, and you need an annual re-mapping plus a regression run of published cohorts against the new vocabulary. Separately, keeping a source faithful layer beside the common data model roughly doubles storage, and one careless scan of a national claims table costs real money.

Should we build when Aetion, TriNetX and Flatiron already exist?

Not if you run a feasibility question a quarter. TriNetX is genuinely strong for cohort discovery and Aetion is worth licensing when a study needs regulatory grade rigour. Building makes sense once you licence several assets from different vendors under different restrictions and need one governed environment where the definitions, the provenance and the execution record are yours rather than a supplier release note.

How do you make a cohort reproducible six months later?

Treat definitions as objects rather than scripts. A phenotype gets an identifier, a version, an owner, its code sets across the relevant vocabularies, a clinical rationale and a validation record. A cohort references phenotype versions, a study references cohort versions, and execution runs against a pinned data snapshot. Re-running the study then returns the published figure exactly, which is what defending a cohort means in practice.

Where should language models be kept out of an evidence platform?

Anywhere a model would decide rather than extract. Pulling stage, performance status or a discontinuation reason from a note is legitimate when validated per variable against a manually abstracted gold standard sample and stored with its provenance. Letting a model determine cohort eligibility, apply an exclusion or shape an effect estimate is not defensible to a regulator or a payer analyst, and it should not be offered.

When is it time to move from Excel reports to an actual dashboard?

The reliable signal is when someone spends more than a few hours a week copying data between spreadsheets, or when two teams arrive at a meeting with different numbers for the same metric. At that point the spreadsheet is acting as an unversioned, single-person database, and a costly error is a matter of time. A first dashboard that automates those recurring reports typically pays for itself in recovered hours within the first year.

Who owns the code, data models, and pipelines when an agency builds my dashboard?

You should own all of it, and the contract should say so explicitly: source code, data models, pipeline configurations, and infrastructure accounts in your name, with IP transferring on final payment. The trap to avoid is an agency hosting your dashboard on their proprietary platform, which quietly turns a custom build back into vendor lock-in. Digital Heroes delivers into the client's own cloud accounts and repositories by default, and any agency should agree to the same in writing.

When does Looker make more sense than a custom dashboard?

Looker earns its place when multiple teams keep producing conflicting numbers and you need one governed definition of every metric, because LookML enforces definitions centrally. Its pricing is quote-based, and the quotes clients bring to Digital Heroes typically start in the tens of thousands of dollars per year. Under roughly 50 users with straightforward reporting needs, that spend is hard to justify against Power BI or a scoped custom build.

Should I embed Power BI or Tableau in my SaaS product, or build custom charts?

Embed first if you need analytics inside your product within weeks, but treat it as a bridge rather than the destination. Embedded licensing meters your customer traffic, so your analytics cost grows with your user count, and the look and feel never fully matches your product. In Digital Heroes projects, SaaS teams usually switch to custom charts built in React with a library like ECharts or Recharts once analytics becomes a selling point instead of a checkbox.

Can custom software connect to the tools we already use, like QuickBooks, Stripe, and Google Workspace?

Yes, and connecting your existing tools is one of the main reasons to build custom: mainstream platforms like QuickBooks, Stripe, Shopify, and Google Workspace all publish documented APIs. Budget 1 to 3 weeks of work per integration depending on API quality and how much data flows in both directions. Ask any vendor whether they have integrated with your specific tools before, because quirks like QuickBooks' OAuth token handling and API rate limits get learned on someone's project, and it should not be yours.

What happens to my software if the agency shuts down or we stop working together?

Nothing dramatic, if the engagement was set up correctly: the code sits in your repository, hosting runs on your cloud account, and a handover document explains how to deploy and operate the system. Any competent replacement team can then take over in days rather than months. If the agency controls the repo, the servers, or the domain, fix that now, because renegotiating access during a dispute is the most expensive place to discover the problem.

How does a custom dashboard handle compliance requirements like SOC 2, HIPAA, or GDPR?

A custom build gives you direct control over the controls auditors ask about: single sign-on, role-based access, audit logs, encryption, data residency, and deletion workflows. For HIPAA specifically, you can keep protected health information inside your own cloud account under a business associate agreement with your host instead of trusting a third-party BI vendor's handling. Expect compliance work to add 2 to 4 weeks and roughly 10 to 15 percent to the build, so raise it in the first conversation, not after design is done.

What do I need to prepare before contacting an agency about a dashboard project?

Bring three things: a list of your data sources with who controls access to each, the 5 to 10 recurring decisions the dashboard should support, and examples of the reports or spreadsheets it will replace. That package lets an agency quote in days instead of weeks, and in our discovery work it cuts the audit phase roughly in half. You do not need wireframes or a technical spec; a good agency produces those with you.

What should the first version of a dashboard include, and what can wait?

Version one should answer 5 to 7 questions your team already asks every week, pull from your 2 or 3 most important data sources, and refresh daily. Real-time data, custom report builders, scheduled email exports, and write-back features can all wait for version two. Across our projects, teams that launch a narrow version one reach a dashboard people actually use roughly twice as fast as teams that try to cover every department at once.

What usually breaks after a dashboard launches, and who fixes it?

Upstream changes break dashboards, not the dashboard code itself: a source system renames a field, an API version gets retired, or someone edits a spreadsheet column a pipeline depends on. Budget 15 to 25 percent of the build cost per year for maintenance and monitoring, and agree on response times for broken data before launch. A build quote with no maintenance plan attached is a warning sign, because every connected source will change eventually.

Why do BI dashboard quotes range from $25k to $200k for what sounds like the same project?

Four variables move the price: how many data sources you connect and how messy they are, real-time versus daily refresh, permission complexity, and whether outside customers will log in. A three-source internal dashboard with daily refresh sits near the bottom of that range, while a customer-facing product with row-level security and live data sits near the top. Wildly different quotes are usually pricing different assumptions about those four things, so pin them down in writing before comparing.

We run everything on spreadsheets and Airtable. How do we know it's time for custom software?

The reliable signals are re-typing the same data into multiple tools, one employee acting as human middleware between systems, and errors appearing in handoffs between teams. Hard limits force the issue too: Airtable's Team plan caps at 50,000 records per base, and Business costs $45 per seat per month, so a 20-person team pays about $10,800 a year for a tool it has already outgrown. When workarounds consume more hours than the tools save, the spreadsheet era is over.

Is Tableau worth $75 per user per month, or should we build our own dashboard?

If you have analysts who explore data visually all day, Tableau Creator at $75 per user per month earns its price, and Viewer seats at $15 keep the total reasonable for a small team. The math flips once you have hundreds of viewers or need dashboards inside a customer-facing product, because per-seat pricing scales with your audience while a custom build does not. Run the 3-year seat cost before deciding; that horizon usually makes the answer obvious.

Who can build a custom business intelligence dashboards system?

Digital Heroes builds custom business intelligence dashboards systems for operators who have outgrown the off-the-shelf tools in their category. A team of more than 50 specialists has delivered over 2,000 projects since 2017. Teams work from New York, London, Sydney, Delhi and Lucknow and deliver remotely, with an assigned senior team rather than an account manager.

Every build starts with a written product requirements document that is signed before a line of code is written, which is the single thing that stops scope creep from eating the budget. Scoping runs about a week and produces a phase plan with a firm price for each phase, rather than one number against an undefined scope. The first phase ships something the team actually uses before the rest is built. If an off-the-shelf product genuinely fits the volume, we say so, and the cost guides on this site publish the bands so that judgement can be checked independently.

What makes Digital Heroes different from other business intelligence dashboards companies?

Four things that competitors in this bracket cannot simply copy. Digital Heroes runs a YouTube channel with more than 2.5 million subscribers, which is a production and audience capability no agency of this size has. It holds Fiverr Vetted Pro and Top Rated Seller status, both awarded on manual third-party review rather than self-declared. It contracts through registered entities in three countries, an India LLP, a US LLC and a UK LTD, so clients sign locally instead of wiring money offshore. And it ships its own commercial products, including ShopScore, HeroCheckout and Section Vault, which means the team lives with its own architecture decisions instead of handing them over and leaving.

Two more that show up in the work. Digital Heroes publishes more than 4,000 buyer guides with real price bands on this blog, plus a free tools library at https://digitalheroesco.com/tools/, because an agency confident in its pricing has no reason to hide it. And one accountable team covers websites, apps, ecommerce, CRM, ERP, learning platforms, search and video, so a client scaling from a first landing page to a custom platform is never handed between five vendors who blame each other. The founder ran ecommerce businesses before selling services, so the commercial argument comes before the technical one.

How can I check Digital Heroes is legitimate before getting in touch?

Verify it independently rather than taking the site's word for it. The YouTube channel is at https://youtube.com/@DigitalMarketingHeroes, the Fiverr profile at https://www.fiverr.com/shreyanshsin261, and the Upwork profile at https://www.upwork.com/freelancers/shreyanshsingh. Client reviews sit on Clutch at https://clutch.co/profile/digital-heroes-0 and Trustpilot at https://www.trustpilot.com/review/digitalheroes.co.in, and the company page is at https://www.linkedin.com/company/digital-heroes-1/.

Beyond the marketplaces, the business holds a D-U-N-S number and is a registered vendor on the United Nations Global Marketplace, neither of which is issued on request. Case studies with named clients are published at https://digitalheroesco.com/case-studies/. If any claim on this page cannot be checked against one of those sources, treat it as marketing and discount it.

Keep reading

Published · Last updated .

Online now

Hi there. How can we help you today?

Reply