SAP Solution Architect · 15+ years · Helsinki, Finland
"In the dark night of all beings awakes to Light the tranquil man. But what is day to other beings is night for the sage who sees." — Bhagavad Gita
IaaS, PaaS and SaaS are the three cloud service models that every technology professional needs to understand. This post explains what each model means, who manages what, where real-world products sit on the stack, and how SAP BTP and S/4HANA Cloud fit in — clearly, without the marketing language.
Most people learn Git backwards. They get a list of commands to memorise — git add, git commit, git push — and then spend months not quite understanding why things work or why things go wrong. This post does it differently. It builds the mental model first. Once you understand what Git is actually doing, the commands stop being a checklist and start making sense on their own.
APIs are one of the most targeted attack surfaces in modern software. This post covers the essentials every developer and architect needs to know — API keys, OAuth tokens, rate limiting, input validation, and the OWASP API Security Top 10. A practical reference whether you are building, reviewing, or securing APIs.
JSON is the universal language of APIs and data exchange. Whether you are reading an API response, writing a config file or working with SAP BTP, you will encounter JSON every day. This post covers everything you need — data types, structure, nesting, arrays, common mistakes and real-world examples — to go from beginner to confident.
Every time you click 'Sign in with Google' or a system calls an API using a token, OAuth 2.0 is at work. This post explains what OAuth 2.0 actually does, how the key flows work, what OpenID Connect adds on top, and how JWT ties it all together — in plain English without the specification language.
REST API design principles have been the foundation of web APIs since 2000 — and they have not changed. This post explains the core principles clearly: resources, HTTP methods, statelessness, status codes, versioning, and idempotency. Whether you are building your first API or reviewing a design, this is the reference you will come back to.
Areas where I design, build, and advise.
End-to-end solutions on SAP Business Technology Platform — integration, extension, and cloud-native development.
Designing and building intuitive Fiori apps that put the user at the centre of every SAP interaction.
Embedding AI capabilities into SAP landscapes — from BTP AI services to custom LLM integrations.
Architecture, migration planning, and implementation of SAP S/4HANA across industries and deployment models.
Guiding organisations through SAP-led transformation — from strategy and roadmap to go-live and adoption.
Making complex SAP concepts accessible — architecture documents, how-to guides, and developer content.
"I spent 10 years building SAP systems in India, then moved to Helsinki. That shift — between two very different ways of working and living — changed how I think about technology, people, and what good architecture really means."
Previously with Accenture; currently at Vivicta (formerly TietoEvry).
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