Multi-Currency Payroll Platform Built with Conduct, Our Agentic Harness
Client
Sancrisoft
Industry
Artificial Inteligence
Engagement
Project Based Development
Duration
2 Months
Sancrisoft Payroll is a production-grade, multi-currency payroll platform built entirely in-house in under 2 months using Conduct, Sancrisoft's proprietary agentic engineering harness. Built on Next.js 15 and Supabase, it replaced manual spreadsheet-driven processes with a secure, auditable, role-based platform for payroll administrators and employees.
Sancrisoft needed to migrate spreadsheet-driven processes that lacked auditability, as they contained sensitive employee data, multi-currency compensation, deductions, vacations, and document workflows. The goal was a single, secure platform that payroll administrators and employees could both trust to be accurate by construction, auditable end-to-end, and protective of personal data by design.
Goals
- Less than 2 months from kickoff to production-grade platform
- Use of Conduct (our agentic harness) on top of Claude Code
- Deliver a single source of truth for monthly payroll replacing error-prone spreadsheets with an auditable, multi-currency platform.
- Protect sensitive employee data by design, with encryption and access control enforced at the database layer.
- Empower employees with self-service: profiles, payroll statements, document requests, and vacation balances, all from one dashboard.
- Employee Management module.
- Payroll Module: Flexible date-range pay periods, payment deductions (tax, social security, health, pension) and additions (bonuses, benefits),
- Vacation Management Module: Ledger-based vacation tracking per employee (accruals and deductions, running balance).
- Holidays Module : Holidays calendar with vacation overlay.
- Admin Dashboard with KPI Cards.
- Document Requests Module
- Reports & Exports Module: Monthly payroll summary with multi-currency breakdowns.
- PDF export (statements, letters) and multi-sheet Excel export.
- Sticky Notes Module: Shared notes panel: create, resolve, reopen, soft-delete.
- Responsive mobile design.
- Internationalization support.
Services
Sancrisoft engineered the Payroll as a modern, full-stack platform using Next.js and Supabase.
Security was a first-class design constraint: sensitive data was all encrypted and protected.
On top of this foundation, we support multi-currency payroll with per-period exchange rates, a reusable formula-based catalog of additions and deductions, automated net-pay recalculation, automated PDF letter and statement generation, transactional email, and a self-service employee dashboard.
Working with Conduct, our internal agentic harness, Sancrisoft compressed what is typically months of work into roughly 30 focused working days and did it with more rigor, not less.
What is Conduct? Conduct is Sancrisoft's internal agentic harness built on top of Claude Code.
It orchestrates AI personas through a disciplined workflow:
- A Product Manager frames each problem,
- An Architect refines the design and records the trade-offs,
- A Tech Lead slices the work and coordinates parallel developer agents to build it.
- A Reviewer adversarially checks every change before it merges.
Nothing ships without passing automated linting, type-checking, and tests.
Visit website
Challenge
Our Payroll system proves the model: bank-grade encryption, multi-currency and employee self-service, all delivered at a velocity that only becomes possible when AI agents operate inside a structured, quality-gated process rather than around it.
Solution
We used our own agentic harness (Conduct) to have the Payroll platform on production, here yo can see the sum up of the process.
- Brainstorm → Brief. Each feature began as a structured exploration (/conduct:brainstorm), producing a Brainstorm Brief that pinned down the problem, who it affected, constraints, and open questions before any solution was committed to.
- Spec → Architect refinement. A Product Manager persona drafted each specification
(/conduct:spec), then an independent Architect pass pressure-tested the technical design and recorded the significant decisions as ADRs. - Build → vertical slices. A Tech Lead persona (/conduct:build) sliced each feature into thin vertical slices, each a complete path through schema, API, UI, and tests and delegated the coding to developer subagents working in parallel, verifying integration rather than writing the code itself.
- Review → adversarial check. Before merge, a Reviewer persona (/conduct:review) fanned out specialized-lens subagents to hunt bugs, security gaps, and standards violations.
- Enforced back-pressure. A three-layer quality gate — agent-side hooks, husky/lint-staged pre-commit, and CI, meant pnpm lint, pnpm type-check, and the test suite all had to pass before anything landed. Quality was structural, not optional.
- Compounding knowledge. Learnings captured along the way fed back into the harness
(/conduct:compound), so each feature made the next one faster.
Results
A fully traceable engineering record behind a real product:
- 15 brainstorm sessions, every feature problem-framed before coding
- 37 specifications files, zero improvised design decisions
- 101 architecture decisions documented as ADRs
- +716 commits, fully traceable engineering record
- 0 manual spreadsheets, replaced entirely by an auditable platform
Here the list of features delivered:
- Employee and contractor registration with auto-generated codes, multiple bank accounts per person
- Fixed base salary or hourly-rate compensation
- Wage adjustment history per employee/contractor, flexible date-range pay periods, payment deductions (tax, social security, health, pension) and additions (bonuses, benefits),
- Multiple payments per employee per period (bonuses, corrections) also automatic net-pay recalculation. Multi-currency support.
- Payment processing and disbursements with partial-payment tracking, status-change audit trail and downloadable payroll statements
- Ledger-based vacation tracking per employee (accruals and deductions, running balance), date-range entries with an "enjoyed" status for taken time off.
- Full per-employee transaction history with effective dates and comments.
- Vacation requests: employees submit requests; admins approve/reject.
- Holidays calendar with vacation overlay, multi-country holiday catalog.
- Employees request HR documents from their dashboard, admin queue to review, fulfill, and track open requests.
- Letter generation from organization templates → auto-generated, signed PDF letters.
- Document signatures and a resign flow.
- Transactional email notifications.
- Monthly payroll summary with multi-currency breakdowns.
- Employee payment history across all periods.
- PDF export (statements, letters) and multi-sheet Excel export.
- Employee self-service: profile, payment history, vacation balance, birthday banner.
- Anniversary & salary-review cards.
- Sticky Notes, Shared notes panel: create, resolve, reopen, soft-delete.
- Organization profile management (name, logo, letterhead).
- Additions/deductions catalog management.
- System settings with maintenance mode (banner + maintenance page with ETA), Row-Level Security, Role-based access control
- Google OAuth support
- Responsive mobile design.
- Dark mode (light/dark theme).
- Rich-text editing for letter templates and document bodies.
- Internationalisation support.
