DDD Architecture for FinTech Systems
Transaction processing, compliance, and multi-domain accounting need clear boundaries. Jardis gives your FinTech system the architecture that scales: from the first Bounded Context to 50 services.
Why FinTech Architecture Fails
The more complex the domain, the faster code structure erodes.
Compliance becomes a nightmare
KYC, AML and PSD2 requirements cut across every layer. Without clear domain boundaries, compliance logic spreads uncontrollably throughout the system. Audits turn into guesswork because nobody can point to where a regulatory rule is enforced.
Transaction pipelines drift apart
Query, transform and persist layers evolve independently. Silent data inconsistencies surface in production when month-end reconciliation reveals mismatches between bookings and settlements.
Teams block each other
Without clean Bounded Contexts, teams reach into the same tables and services. Every feature release becomes coordination overhead. A payment hotfix breaks onboarding because KYC validation and transaction processing share the same module.
Regulatory isolation at the filesystem level.
Architecture that enforces boundaries, not just recommends them.
Physical separation, not conventions
Each Bounded Context becomes a standalone package with its own dependency structure. Payment cannot access compliance tables, KYC cannot reach settlement data. The builder enforces this separation at the filesystem level. Regulatory concerns like PSD2 reporting or AML checks stay isolated in their domain.
One source of truth for your data
Query, transform and persist are generated from a single schema definition. Silent inconsistencies between layers become impossible. The builder validates the entire pipeline before a single line of code is written. Reconciliation gaps caused by diverging data models are eliminated by design.
80% of the code from the builder, ready to ship
The builder generates all PHP infrastructure per Bounded Context: entities, aggregates, events and the repository pipeline. Domain events like TransactionSettled or ComplianceCheckPassed are typed and versioned. Your team focuses on business logic: credit scoring algorithms, settlement rules and risk assessment.
See what three files turn into.
Three definition files in, a complete bounded context out. Browse the generated code.
# Database Schema — Sales Bounded Context
# This file defines the persistent storage structure.
schema:
domain: ECommerce
boundedContext: Sales
tables:
order:
columns:
id:
type: integer
primary: true
autoIncrement: true
public_id:
type: uuid7
unique: true
customer_email:
type: string
length: 255
status:
type: string
length: 32
default: "draft"
total_amount:
type: integer
currency:
type: string
length: 3
default: "EUR"
created_at:
type: datetime
updated_at:
type: datetime
nullable: true
order_item:
columns:
id:
type: integer
primary: true
autoIncrement: true
order_id:
type: integer
foreignKey:
table: order
column: id
onDelete: cascade
product_name:
type: string
length: 255
sku:
type: string
length: 64
quantity:
type: integer
unit_price:
type: integer
line_total:
type: integer
Why FinTech Teams Build on Jardis.
From seed stage to Series C. Jardis grows with your system.
Bounded Contexts as Deployment Units
Payment, lending, KYC: each domain is a standalone package. Teams deploy independently without blocking each other. A compliance update goes live without the payment team having to coordinate a release.
Weeks Instead of Months for New Domains
New Bounded Context for scoring or settlement? Define the schema, start the builder, production-ready domain code in minutes. Your team writes the business logic: scoring models, settlement rules, risk assessment.
Architecture Auditors Understand
Clear domain boundaries, generated API contracts, traceable data flows. During PSD2 or regulatory audits, the package structure shows exactly where each compliance rule is enforced.
Ready to put your FinTech on a solid foundation?
Join the WaitlistStructure costs less than chaos.
Try Jardis 7 Days Free
Point Jardis at your real domain. Discovery, structure, and your first platform build.
Join WaitlistThe complete DDD architecture with all classes and contracts. Your team ships features, not infrastructure.
Join WaitlistThe complete business logic with handlers, validation, and pipelines. What used to be a sprint is now a build.
Join WaitlistMore than 20 Platform Builds per month?
Let's talkBe there when Jardis launches.
Sign up. You'll get access as soon as we go live. Including a free trial.
Curious how Jardis works?
Discover JardisFrequently Asked Questions
Answers to the most important questions about Jardis in the FinTech context.
Yes. You generate a Bounded Context for payment and integrate it step by step into your existing PHP system. The builder produces hexagonal architecture that coexists alongside legacy code. Existing PSP integrations like Stripe or Adyen connect through adapters. No disruption to running operations.