ComplyLens Accelerates RegTech Product Development with SourceFuse
How a fast-moving startup partnered with SourceFuse to design, build, and launch a cloud-native compliance product with speed, flexibility, and execution discipline.
Overview
ComplyLens is a UK-based regtech startup focused on helping financial institutions manage regulatory risk. The company built its product to address a major gap in the market, that is, risk assessment processes in financial services remain highly manual, spreadsheet-driven, and difficult to scale or audit.
When ComplyLens decided to turn its concept into a software platform, it faced a foundational choice of spending months hiring and assembling an internal technical team or partnering with an experienced product engineering firm that could accelerate execution.
The company chose SourceFuse. That decision gave ComplyLens immediate access to product architecture, business analysis, UI/UX, development, QA, and cloud engineering skills, allowing the startup to move quickly from idea to product build and position itself for early client adoption.
The Challenge
A legal requirement stuck in spreadsheets
Financial institutions are required to run regulatory risk assessments. In most firms, that still happens in fragmented, spreadsheet-based workflows.
No real auditability
Spreadsheet processes are hard to trace and hard to defend when an auditor or regulator asks how a risk decision was made.
Too much key-person dependency
The process leaned on a few individuals who held the knowledge. That is fragile, and it does not scale as a firm grows.
A market opportunity with a clock on it
ComplyLens had early, positive signals from prospective clients. Turning that momentum into a working product meant moving fast, not losing quarters to setup.
The cost of building a team in-house
Doing it internally meant first hiring an architect, business analyst, full-stack developers, QA, and DevOps: months before a single feature got built.
Speed versus specialisation, at the same time
The build needed architecture, design, engineering, QA, and cloud expertise together from day one. Assembling all of that internally, quickly, was the real bottleneck.
The Solution
SourceFuse partnered with ComplyLens to design and build AssessLens, a cloud-native regtech product for financial services. This was a net-new build, not a legacy modernization. The job was to take a startup from concept to product readiness with the technical foundation and delivery pace to execute fast.
A team stood up, and a product was defined
The work started with rapid team formation and early product definition, so ComplyLens moved into building without the usual hiring lag.
Architecture and cloud foundation on AWS
SourceFuse set up architecture planning, database design, application foundations, and the AWS environment: the base a scalable SaaS platform needs from day one.
Design early enough to sell with
UI/UX work produced real product designs early, giving ComplyLens something concrete to put in front of prospects and validate while the platform was still being built.
An iterative, startup-friendly build
Development ran in an iterative model suited to a startup, moving without waiting for perfect upfront specs and refining features as it went.
AI-assisted development for speed
AI-assisted development practices were introduced during the engagement to increase development speed and productivity, enabling faster iteration.
A structured handover to their own team
As ComplyLens began building its internal product team, SourceFuse led transition planning, handing over documentation, source code, processes, and product knowledge in a structured, collaborative way.
The Impact
Cross-functional team building within two weeks
MVP kept on a 4 to 6 month track
Net-new SaaS platform, built cloud-first on AWS
Early designs used to validate with prospects
Secure, enterprise-ready foundation from day one
Delivered readiness for first live client deployment
Smooth handover to ComplyLens’s own team
Hybrid model: internal team plus on-demand expertise
AWS Services Used
- Amazon EC2 (Elastic Compute Cloud)
- Amazon ECS (Elastic Container Service)
- Amazon ECR (Elastic Container Registry)
- Amazon VPC (Virtual Private Cloud)
- Elastic Load Balancer (ELB / ALB)
- Amazon CloudFront
- Amazon RDS (PostgreSQL / Aurora)
- Amazon ElastiCache (Redis)
- Amazon S3 (Simple Storage Service)
- AWS KMS (Key Management Service)
- AWS WAF (Web Application Firewall)
- AWS GuardDuty
- AWS Security Hub
- AWS Secrets Manager / Parameter Store
- Amazon CloudWatch
- Amazon SES (Simple Email Service)
- Amazon SNS (Simple Notification Service)
- AWS CodePipeline (or Jenkins-integrated pipelines)
Technology Highlights
Cloud-Native SaaS Architecture:
Multi-tenant AWS-based design enabling scalability, efficiency, and tenant-level data isolation.
Scalable Infrastructure:
Auto-scaling, load balancing, and caching ensure high availability and performance under varying workloads.
Modern Full-Stack Stack:
A react frontend and LoopBack 4 backend enable rapid, modular, and maintainable development.
API-First Design:
REST APIs provide flexibility for integrations and future extensibility.
Enterprise-Grade Security:
RBAC, JWT authentication, encryption, and AWS security services ensure robust protection.
High-Performance Data Layer:
PostgreSQL and Redis caching deliver reliable storage with optimised response times.
CI/CD Automation:
Automated pipelines enable faster releases, consistent deployments, and improved code quality.
Observability & Monitoring:
Real-time logging and monitoring ensure system reliability and proactive issue resolution.
AI-Assisted Development:
AI-assisted development practices were introduced during the engagement to enhance development speed and productivity, enabling faster iteration in a startup environment.
Compliance-Ready Design:
Built to support audit trails, risk modelling, and regulatory reporting requirements.
Looking Ahead
ComplyLens now has its own core team in place and continues to work with SourceFuse as an extension of that team. This hybrid model gives the company the flexibility to scale support up or down based on product priorities, client demands, and specialised skill requirements.
As the company continues to grow in the regulatory technology space, it is positioned with a live product in the market, a scalable cloud-based foundation, a more mature internal operating model, and a trusted partner that continues to support future development.
For startups building ambitious B2B products in regulated industries, the ComplyLens story shows the value of choosing the right product engineering partner early, especially when speed, specialisation, and execution quality all matter at once.
