Custom Software Development
Bespoke enterprise software built around your workflows
Purpose-built software that fits your exact requirements — not a generic SaaS workaround. Enterprise-grade architecture, built to scale with your business.
What We Deliver
Core Capabilities
- Enterprise Application Development
- SaaS Product Engineering
- Legacy System Modernisation
- Microservices Architecture
- System Integration & API Development
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By the Numbers
What clients achieve with GYSP
after domain-driven modernisation — same business logic, fraction of the maintenance burden
measured across engineering teams who replaced monoliths with modular microservices architectures
for clients who replaced generic vendor software with purpose-built internal tools tailored to their exact workflows
Proven Results
Custom Software Case Studies
FinTechGlobal FinTech Cards Platform
A global FinTech cards platform needed a localised digital enrollment experience for credit card products delivered consistently across 16 international language variations — with zero template drift and no per-locale component duplication. As Lead AEM Engineer, GYSP architected the full multi-lingual AEM 6.5 platform: structured language copy subsystems, a secure Spring Boot microservice integration hook for on-the-fly PDF generation, reusable component frameworks with customised core dialog fields, and Jira-governed sprint rollout with Git-enforced component isolation.
FinTechGlobal Auto Finance Platform
A high-volume auto loan processing platform required real-time integration with external banking underwriting and credit engines — with zero visible latency for applicants and dealers. GYSP engineered the full AEM 6.5 component engine: custom OSGi handlers for secure RESTful credit API transactions, dynamic Thank You screen workflows handling all credit decision outcomes, and multi-tenant clientlib restructuring that cut front-end page weight and network round-trips across every loan application flow.
FinTechGlobal Banking Institution
A global banking institution migrating to AEM as a Cloud Service needed a content architecture supporting global content reuse across independent regional viewpoints — UK, US, and APAC divisions sharing a unified content model while maintaining independent editorial control. GYSP spearheaded content taxonomy modeling, configured optimised JCR node hierarchies with Apache Sling path resolution for multi-device delivery, and automated staging pipelines via AEM Cloud Manager and Bitbucket.
Industry Expertise
Industries We Serve with Custom Software
Client Voices
What our clients say
“The GYSP team completely transformed our infrastructure. Moving from a monolith to microservices, building full observability, and ensuring compliance — all while keeping costs predictable. Teachers and students experienced faster, more reliable access, and our dev team gained real velocity. They've been more of a partner than a vendor.”
“Partnering with GYSP gave us the foundation we needed to compete in a fast-moving market. Their team built a secure ordering platform, optimised mobile experience, and automated restaurant onboarding. The result was a smoother customer journey and the ability to handle peak demand without downtime. They deliver at startup speed.”
“Team GYSP helped us take an idea and turn it into a trading tool traders actually love. Their forecasting engine, risk-reward dashboards, and clean UX made strategy testing faster and decision-making easier. We've seen higher engagement and trust from our user base thanks to their precise execution.”
FAQs
Common questions
Everything buyers typically ask before starting a custom software engagement.
Ask us anythingHow do you handle scope changes mid-project?
We use a change control process — any new requirement is assessed for impact on timeline and budget, documented, and approved before work begins. For Time & Material engagements, scope flexibility is built in. For Fixed Cost, we maintain a defined scope document and manage changes through formal amendments.
What's your approach to legacy system modernisation?
Strangler fig pattern — we never do a big-bang rewrite. New functionality is built on the modern architecture, legacy components are gradually replaced as traffic shifts, and the old system is decommissioned piece by piece. This keeps the business running throughout the migration.
Do you build for a specific tech stack or are you stack-agnostic?
Stack-agnostic, with strong preferences. We default to TypeScript/Node.js and React/Next.js for web, Python for ML/data, Go or Java for high-throughput services, and PostgreSQL for relational data. We work in your existing stack if it's a better fit for continuity.
How do you ensure code quality and long-term maintainability?
Automated testing (unit, integration, E2E) as part of the delivery definition, code review gates, static analysis in CI, and architectural decision records for non-obvious choices. Documentation is embedded in code — not in a separate wiki that goes stale the week after delivery.
What happens after the project is delivered?
We offer post-delivery support retainers, ongoing development, and structured transition-to-internal-team programmes where we document, train, and hand over systematically. Most clients retain us for at least 3–6 months post-launch.
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