Five screens from a live tender - step through the platform contractors, subbies and consultants use every day.
Every active work package, bids received and pool health in a single view.
Tender decisions worth millions were made over email and spreadsheets. Pricing could be seen before the deadline, evaluators knew who had bid, and there was no tamper-evident record of who submitted what, or when. When an award was challenged - by a losing subbie, an auditor or the board - the process was honest, but a spreadsheet and an inbox could not prove it.
Not every award needs to be fully blind. Each route produces a proportional, independently verifiable certificate - the assurance matches the procurement, and the proof is always there.
Subbies submit priced bids through the portal. Each is encrypted the instant it lands and stays locked until the deadline - not even the contractor can open a bid early. When the clock runs out, every bid unseals at once onto a single tender board.
When an award is made, SealedWorks assembles the decision into a Procurement Integrity Certificate stamped with a SHA-256 hash of the underlying record. Change a single line and the hash no longer matches. A losing subbie, an auditor or the board can verify it independently, without access to the system.
Every subcontractor's documents - trade licences, insurances, certifications - live in one register with expiry dates the system watches. Pool health is assessed against a 2:1 anonymity ratio before a package is ever tendered, so compliance stops being a scramble at award time.
Import a bill of quantities straight from a spreadsheet and SealedWorks turns it into structured, line-item work packages. Criteria are locked and hashed before a single subbie is invited, and reusable templates mean the next package of the same shape starts most of the way done.
SealedWorks connects to the estimating and commercial systems contractors already run. During Create Work Package, a priced bill of quantities is pulled in and mapped to line-item packages automatically - no re-keying, and no detail lost between the estimate and the tender.
During Create Work Package, SealedWorks pulls a priced bill of quantities straight from Causeway and maps it to structured, line-item packages. Estimators keep working where they already work, and the tender begins from real numbers rather than a re-typed spreadsheet.
Measured quantities and rates, imported without re-keying.
Takeoff quantities brought across without re-measuring.
Any bill of quantities as a spreadsheet, mapped on import.
A bespoke connector built to whatever system you already run.
Every integration is built by BY BANKS to fit the contractor - not an off-the-shelf plugin. If it holds your bills of quantities, it can feed a work package.
Scope and evaluation criteria are fixed and hashed before any invitation.
Subbies are selected against a recommended 2:1 anonymity ratio.
Bids are encrypted on submission and stay locked until the deadline.
Identities are redacted; evaluators score independently until consensus.
The decision is sealed into a verifiable integrity certificate.
The production platform runs in a single UAE region, with a small number of deliberate decisions doing the heavy lifting - on cost, on responsiveness and on the integrity guarantees the certificate depends on.
Uploads and downloads run browser-to-S3, so document traffic never hits the app tier. Compute and storage margins hold as volume grows.
Live updates poll every 15-30 seconds. Procurement is not a trading floor, so there are no WebSockets or sticky sessions to scale.
The audit log carries no UPDATE or DELETE permissions. Every action is recorded once, permanently, and feeds the certificate hash.
The mapping between contractor identity and tender number is cryptographically isolated - hidden even from database admins during an active tender.
Everything runs in AWS me-central-1, with WAF and GuardDuty in place for tier-1 client security requirements.
Aurora Serverless v2 scales with the spikes around tender deadlines, then settles back to a low floor between them.
We priced a leaner stack - Sevalla with Cloudflare R2 and Neon Postgres - at roughly a third of the AWS cost, and chose AWS anyway. Guaranteed UAE data residency was non-negotiable for the founding client. The marketing site stays on PHP, hosted separately and off the AWS bill, so it never depends on product uptime.
Procurement disputes drop because the decision trail is complete and tamper-proof. When an award is questioned, the answer is a certificate, not a search through inboxes.
Bids are unreadable until the deadline unseals them - even to us.
Contractors, subbies and consultants each see only their slice.
Every award sealed with a SHA-256 certificate anyone can verify.
SealedWorks was built on its own design system - a system of record that looks like the artefact it produces. Two surfaces, one ledger-green accent, three typefaces each doing one job.
Body, nav, buttons, fields and table cells. Ninety-five per cent of the interface.
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