Tokyo-based technology consultant and hands-on engineer with 15+ years of experience connecting business goals, customer needs, and technical delivery.
About
I'm Sarveshwar Singh — a Tokyo-based technology consultant and engineer working with a trusted team through SunVeda Technologies. Since 2010, my work has spanned full-stack software, enterprise systems, and decentralised technology.
My strength is connecting the layers: understanding business context, translating ambiguity into technical priorities, and working with teams to move from idea to shipped solution. I stay hands-on wherever emerging technology must create practical value.
Transformation Practice
Start with stakeholder context and the customer journey. Surface constraints, challenge assumptions, and define the change that matters before selecting technology.
DiscoverTranslate ambiguity into prioritised product and technical decisions, with clear ownership, practical milestones, and measures of progress.
AlignWork alongside specialists to ship, document decisions, validate what is working, and adjust the roadmap as evidence replaces assumptions.
DeliverNotable Work
Evidence over claims: selected work spanning team-based market expansion, production software, and open-source contribution.
Through SunVeda Technologies, our team supports Samurai Masterpieces, a Tokyo-based Japanese culinary-tools brand, as it develops its presence across European markets.
My contribution: connecting expansion goals with technical priorities, coordinating within the team, and contributing hands-on technical support.
Visit Samurai Masterpieces ↗
A marketplace supporting real-world asset tokenization with on-chain provenance and traceability.
My contribution: contributed to the design and delivery of its smart-contract architecture.
Contribution summary
A multi-chain marketplace supporting minting, trading, and secondary-market flows across Ethereum, Polygon, and Oasys.
My contribution: contributed to the design and delivery of its smart-contract architecture.
Contribution summary
SecondFi is the current name of the wallet formerly known as Yoroi, built on its established Cardano wallet infrastructure.
My contribution: contributed to the original Yoroi codebase across the browser extension, mobile apps, and Ledger hardware bridge.
View contribution on GitHub ↗Tech Stack
A production-minded toolkit for building secure on-chain systems and the applications around them.
Blockchain ecosystems
Secure smart contracts and full-stack applications across major EVM networks.
Ethereum · Base · Arbitrum · Optimism · Polygon · BNB Chain · Avalanche
High-performance programs and applications built for the Solana ecosystem.
Mainnet · Devnet · Local validator
Smart contracts and applications designed around Cardano’s eUTxO model.
Mainnet · Preprod · Preview
Privacy-enabled applications and multi-party workflows for regulated assets.
Global Synchronizer · Participant nodes · Validators
Shared application stack
Ways to Collaborate
Focused support for teams navigating technical change, product decisions, or a new market.
Threat-model systems from day one, harden what's exposed, and pressure-test AI features for safety, misuse, and unintended behaviour before they reach production.
Security · AI SafetyClarify the business challenge, stakeholder needs, current workflow, and the outcome worth pursuing before committing to a solution.
Context · PrioritiesTurn a broad ambition into prioritised decisions, delivery stages, dependencies, and a roadmap the team can actually use.
Strategy · PlanningMap the experience around the technology, identify friction, and connect user needs to operational and product changes.
Research · DesignBridge business intent and engineering reality, then contribute hands-on across cloud, full-stack, mobile, and blockchain systems.
Cloud · SoftwareSupport teams adapting digital products and operations across markets, with particular experience working from Japan.
Japan · GlobalEngagement scope, responsibilities, and outcomes are agreed in writing. Paid work requires a separate agreement and invoice.
Community
Two communities I run outside client work — open to anyone who wants to join in.
A LINE OpenChat group for people learning and experimenting with AI tools together.
One of Tokyo's biggest badminton groups — stories, meetups, and matches. "Let shuttle make stories."
Join on LINE ↗Gallery
A few glimpses from Instagram — community meetups and moments along the way.
Connect
Open to transformation, product, and technology conversations — especially where business change needs practical technical leadership.