Sphere × Anthropic Claude
Claude-Powered Legacy Modernization
Your most critical systems are also your most untouchable ones. Too complex to rewrite, too risky to leave as-is, too valuable to abandon. Claude Code reads them like no tool has before. Sphere rebuilds them without losing what made them valuable.
As-is specs before rebuild starts
Specs and delivery move in parallel
Automated validation before cutover
Why use Claude for Legacy Modernization
We eliminate the barriers to building a world-class BFSI tech team. Claude reads entire codebases as connected systems, extracting business logic, hidden workflows, and undocumented dependencies that manual review would miss.
Analyzes large codebases as one connected system
Surfaces hidden workflows and edge-case logic
Pulls business rules into usable specifications
Speeds up reverse engineering and documentation
Creates a stronger base for phased delivery
We eliminate the barriers to building a world-class BFSI tech team.
Learn MoreHow We Help You Scale Without Hiring Headaches
We eliminate the barriers to building a world-class BFSI tech team. We've helped leading banks, fintech disruptors, and insurance innovators scale their tech teams with precision, ensuring faster delivery, seamless compliance, and direct impact on business outcomes.
Rapid Deployment
Need a team yesterday? We quickly mobilize BFSI-experienced engineers, ensuring they're productive from day one.
Flexible Scaling
Need a single key hire or an entire product squad? Our on-demand model gives you the exact talent you need, exactly when you need it.
Deep Codebase Understanding
Claude reads your entire system as one connected product — every dependency, every integration, every edge case documented.
Regulatory & Security Compliance
We work in highly regulated environments, ensuring compliance patterns are preserved and validated at every step.
Continuous Spec-Driven Delivery
Feature by feature through a repeatable loop — specs, implementation, review, and validation running in parallel.
What We Do
Sphere covers the full modernization path. The work starts with understanding what the system actually does today and moves into a structured delivery process that gives your team a clear target state, cleaner implementation flow, and lower transition risk.
Product Extraction & Functional Documentation
Claude agents map the full system as a product before any architectural decisions are made. Every module, every dependency, every workflow that exists only in the code — documented before the rebuild starts.
- Module-by-module functional documentation
- Business logic and dependency mapping
- Undocumented workflow discovery
- Integration inventory and risk surface
- Institutional knowledge captured before key staff move on
Architecture & Stack Advisory
Sphere defines the target state and configures the delivery environment to match. In a Claude-native workflow, the architecture doesn't just specify what to build – it determines which specialist agents and tools are live before the first sprint.
- Target architecture design
- Stack selection guidance
- Cloud model (AWS, Azure, GCP)
- Delivery environment and agent configuration
- Technical risk prioritization by module
Agentic Spec-Driven Implementation
Claude Code drives implementation feature by feature through a repeatable loop. Sphere engineers review output, handle edge cases, and write the next spec while implementation runs in parallel.
- Spec-driven feature delivery
- Multi-agent orchestration
- Human review at every gate
- Parallel spec and build progress
- Refactoring and debt remediation
Compliance & Regulatory Pattern Preservation
Legacy systems embed decades of regulatory logic that often exists nowhere but in the code. Sphere identifies, validates, and rebuilds those patterns as verified behavior – not copied lines.
- Regulatory compliance pattern transfer
- Security vulnerability remediation
- Audit trail and reporting integrity
- GDPR, HIPAA, SOC 2 alignment
- Exception-handling logic validation
Testing & Equivalence Validation
Every critical path in the old system is tested against the new one. The rebuilt product proves it behaves identically where it must and demonstrably better where it should.
- Automated equivalence test suite generation
- Regression testing across all workflows
- API and UI validation (Playwright + curl)
- QA agent integration throughout delivery
- Missing coverage identification
Production Support & Ongoing Evolution
The rebuilt system stays modern. Feature additions, performance work, and subsequent modernization phases all run through the same spec-driven loop – so the new codebase doesn't become the next legacy problem.
- Post-launch bug resolution
- Performance monitoring and tuning
- Feature additions on retainer
- Documentation maintenance
- Next-phase modernization planning
From Legacy System to Modern Product
Free Assessment
Sphere reviews your system: codebase size, language stack, integration surface, regulatory requirements. You leave with a realistic scope, a phased roadmap, and an honest picture of what the engagement involves.
Product Extraction Sprint
Claude agents document the full system as a product. Functional requirements for the target state written and validated with your team. Architecture defined. Delivery environment configured. Nothing moves to implementation until what must survive is confirmed in writing.
Phased Implementation
Feature by feature through the spec-driven loop. First phase typically live in 6–12 weeks. The legacy system keeps running throughout. You see working software before the full program is committed.
Go-Live & Handover
Equivalence validation. Production deployment. Full documentation package. Test coverage the original never had.
Ongoing Support
Monthly sprint cycles for feature additions, performance work, and next-phase modernization – through the same loop, with the same team.
Upgrade Legacy Systems with Claude
We're not a generic staffing firm. We're BFSI experts. We've helped leading banks, fintech disruptors, and insurance innovators scale their tech teams with precision.
Industries We Modernize
Banks spend 70–75% of IT budgets on legacy maintenance. Core banking, mainframe batch processing, loan origination, regulatory reporting. Sphere preserves the compliance patterns and audit integrity that regulated institutions cannot compromise.
Financial Services practice →
Policy administration, claims processing engines, pricing models built on rule sets no one has fully documented. The average audit reveals 3–4x the cost that appears on the surface.
Insurance practice →
EHR integrations, legacy patient data workflows, clinical systems with compliance requirements that compound every year. HIPAA-aligned delivery from the first sprint.
Healthcare practice →
Post-acquisition technical assessment reveals the legacy burden on the balance sheet. Sphere runs modernization as a value creation workstream – with defined timelines, defined ROI benchmarks, and the delivery velocity that PE timelines demand.
Private Equity practice →
ERP integrations, production scheduling systems, legacy inventory logic modernized to current APIs – without disrupting floor operations while the transition runs.
Manufacturing practice →