01 / Capability
High-concurrency services on .NET Core and C#. CQRS where read and write paths diverge, domain-driven design where the business logic is genuinely complex, message queues where coupling would otherwise bite.
.NET Core · C# · CQRS · RabbitMQ · Service FabricOn-premises to AWS or Azure, done in stages rather than as one risky cutover. Container orchestration, CI/CD pipelines, and infrastructure sized to actual load instead of worst-case guesses.
AWS · Azure · Docker · Kubernetes · Azure DevOpsReact and Angular interfaces for operational software: the dashboards and admin tools people use for eight hours a day. Built to stay maintainable long after the first release.
React · Angular · TypeScript · REST APIsRelational and document modelling, query optimisation, and tuning for systems handling large volumes. Usually the difference between a system that works in testing and one that works in production.
SQL Server · MongoDB · Oracle · Redis · KafkaEnterprise experience, without the enterprise overhead. You brief the architect, and the architect writes the code.
02 / Selected work
Systems delivered by our principal architect over a 21-year career, in senior roles at Virtusa, TollPlus, and Annalect, and on direct contract. Each engagement below is credited to the organisation it was delivered through.
Jaguar Land Rover
Senior Architect at Annalect
Design and build of an asset management application for a global automotive manufacturer, covering feature development, code review, and sprint delivery across a distributed team.
Azure Service Bus handles asynchronous messaging between services, so a slow consumer never blocks the rest of the system.
Greenergy, United Kingdom
Senior Engineer · direct 18-month contract
Lift-and-shift of on-premises systems into Azure for a UK fuel distribution group, alongside development of an invoicing application integrating with third-party interfaces.
Contracted directly rather than through an intermediary, and delivered remotely from Hyderabad over eighteen months. This is the working arrangement Celveza is built to repeat.
North Texas Tolling Authority & SR-91 California
Technical Architect at TollPlus LLC
Automated toll transaction processing across two highway authorities. Vehicle images captured at gantries are read and matched against prepaid and postpaid customer accounts, with payments handled across card, bank transfer, and cheque, and invoices generated monthly.
Built as microservices on Service Fabric with CQRS separating command and query paths to keep read performance stable under write load. RabbitMQ handled asynchronous processing between services.
A+E Networks, USA
Architect at Virtusa
Cloud-based video delivery platform serving content across US and international markets. Microservices architecture designed for large scale while keeping captive cloud infrastructure limited.
Media assets processed through a transcoding service, catalogued via an asset metadata store on DynamoDB, and delivered through a responsive mobile-first front end with multi-language support.
RSA Insurance, Singapore
Technical Lead at Virtusa
Quote tracking and policy data capture for underwriters, used across several business teams to create policies and quotations. Two years on the engagement, from requirements through to production support.
JP Morgan Chase, United Kingdom
Technical Lead at Virtusa
Invoicing engine for foreign exchange, credit derivatives, and interest rate derivatives. Brokerage rates vary per client and are defined through multiple rate cards, all of which the system resolves before generating an invoice.
Trade data arrived from multiple upstream systems as files on FTP servers in differing formats, ingested by a Windows service into the Condor database on a daily and monthly cycle.
Also delivered
03 / Who leads the work
Venkat Ramesh Puripanda
Principal Architect
Twenty-one years designing and delivering enterprise systems across tolling, banking, telecom, energy, and media. Associate Architect at Virtusa, Technical Architect at TollPlus, and Senior Architect at Annalect, alongside direct contract engagements. Has led teams through requirement gathering, design review, and production release on platforms handling high-concurrency transaction processing.
Work spans the full stack: .NET and C# on the backend, React and Angular on the front, AWS and Azure underneath, with a working depth in the parts that usually decide whether a system holds. Data modelling, query performance, and service boundaries.
For larger engagements, Celveza brings in a small bench of vetted engineers the principal has worked with directly, scaled to the project rather than maintained as permanent overhead.
Currently available for new engagements
04 / How we engage
A conversation, not a form. We want to understand the constraint you are actually working against: volume, deadline, legacy system, compliance, before anyone proposes a solution.
A written outline of approach, timeline, and cost. If a project isn't a good fit for a team our size, you hear it at this stage rather than after you've paid.
Working software rather than status reports. You see progress as it happens and can change direction while changing direction is still cheap.
Documented, deployed, explained. The code is yours, and you are never structurally dependent on us to keep it running.
05 / Contact
A rough outline is enough to start. Email reaches the architect directly, and every message gets a reply within four hours.
