OPEN_TO_WORK — REMOTE · RUST · SYSTEMS DESIGN
+10 years across C#, Node, and blockchain systems +shipped smart contracts in Solidity and Rust

Hardik Savaliya.
Systems designer. Rust-focused.

10+ years designing backend and blockchain systems — microservices migrations, a decentralized NFT marketplace, smart contracts shipped on Ethereum in Solidity and Rust. Now going deeper on Rust as the primary language for the systems and decentralized-infra layer.

Based in
Riyadh, Saudi Arabia
Open for
Rust roles · remote · systems / Web3
Currently
Senior Backend Developer — Astek Middle East
About

The design holds.
The language is just syntax.

10+ years building systems across C#, Node, and blockchain — the constant is how the system is designed, not what it's written in.

10+ years designing and shipping production systems — enterprise microservices migrations in C#/.NET and Node, e-commerce platforms processing six figures in monthly orders, and blockchain systems including a self-built decentralized NFT marketplace that processed $50K+ in transactions in its first six months.

That marketplace is where Rust earned a permanent place in the stack — smart contracts on Ethereum written in both Solidity and Rust, optimized hard enough to cut gas fees 20%. The pattern across every role is the same: system design first — where state lives, how components fail, what breaks under load — with the language chosen to fit the job.

The next chapter is deliberately Rust-first: deepening systems-level Rust for decentralized infrastructure, distributed systems, and the kind of work where compile-time guarantees aren't optional.

engineer.toml
[profile]
name = "Hardik Savaliya"
role = "systems designer"
years = 10
 
[stacks]
backend = ["C#", ".NET", "Node.js"]
blockchain = ["Solidity", "Rust"]
shipped = "NFT marketplace, $50K+ volume"
 
[focus]
now = "Rust-first systems design"
domain = "decentralized_infra"
constant = "the design, not the syntax"
10+
Years across C#, Node & blockchain systems
$50K+
NFT marketplace volume, first 6 months
3x
Scalability gain on enterprise microservices migration
Experience

The log so far.

Chronological — same as a commit history. Most recent at the top.

Oct 2022 — Present Riyadh, Saudi Arabia
Senior Backend Developer — Astek Middle East
Led the design and migration of an enterprise-level microservices architecture for BLU Store, the official Al-Hilal sports club merchandise platform — improving system scalability 3x. Migrated a legacy system to Node.js, .NET, Postgres, ArangoDB, and RabbitMQ, cutting API response times 40% and speeding order processing 30% through caching and database optimization.
Node.js.NETPostgresArangoDBRabbitMQMicroservices
2022 — 2023 Independent
Independent Blockchain Consultant — NFT Marketplace
Designed and built a decentralized NFT marketplace from the ground up, processing $50K+ in transactions in its first 6 months. Wrote and deployed smart contracts on Ethereum in Solidity and Rust, cutting gas fees 20% through contract optimization, and integrated IPFS for fully decentralized asset storage and ownership verification.
SolidityRustEthereumIPFSSmart Contracts
2021 — 2022 Remote
Full Stack Software Developer — Systematic Technologies
Led design and optimization of a NoSQL e-commerce platform (pik.sa) for Jahez International, managing the system-level architecture and migration from monolith to microservices with Node.js, ArangoDB, Angular 2, and Docker.
Node.jsArangoDBAngularDockerMicroservices
2021 — 2022 Independent
Independent Consultant — Encora Inc.
Built and deployed Canada's largest flower delivery e-commerce platform (1800flowers.ca), processing 100K+ orders per month. Improved order processing speed 45%, cut checkout failures 30%, and achieved PCI-DSS compliance with 99.99% transaction success.
Node.jsAngularMySQLPayments
2016 — 2020 Remote
Software Developer — Peerbits Solutions
Designed, built, and deployed Easy203kPro and Easy Contractor Pro — FHA 203k loan cost-analysis and project management platforms — using .NET MVC and MSSQL. Owned system-level architecture across multiple concurrent products including Airport Park Manager and TraderDock.
.NET MVCMSSQLSystem Design
2016 — 2018 Remote
Software Developer — Advent Intermodal
Built and maintained eModal®, the world's largest port community system, used by terminal and port operators worldwide. Designed APIs, admin tooling, and core platform features for truck scheduling, traffic mitigation, and fee collection using .NET MVC, EF, LINQ, and AngularJS.
.NET MVCEFLINQAngularJS
2014 — 2016 Mumbai · South Africa (remote)
Software Developer — Digital Mirror · loyal1.co.za · Dzyris Info Tech
Early career across three products: a tradesman marketplace platform, a customer loyalty rewards system for a South African client, and an in-house construction ERP for project costing and financial reporting — all built on .NET / ASP.NET and SQL Server.
ASP.NETSQL ServerjQuery
Projects

Shipped, and what's next.

One real product already live. The rest are deliberately scoped systems-level builds going deeper into Rust.

Shipped Blockchain — DeFi/NFT
Decentralized NFT Marketplace
Built and launched independently — smart contracts on Ethereum in Solidity and Rust, IPFS-backed asset storage for full ownership verification, and gas optimization that cut fees 20%. Processed $50K+ in transactions in its first 6 months.
SolidityRustEthereumIPFS
Planned Systems — Infra
Distributed KV Store
A key-value store with Raft consensus, built from first principles to understand replication, leader election, and failure modes — not wrapping an existing engine.
RustRaftTokio
Planned Systems — Infra
HTTP/2 Server
A server built on raw sockets and the HTTP/2 spec, to actually understand framing, multiplexing, and flow control instead of trusting a framework to handle it.
RustTokioHTTP/2
Planned Systems — Data
Columnar Query Engine
A small analytical query engine over columnar storage — the kind of project that forces real understanding of query planning and execution, not just SQL syntax.
RustArrowQuery Planning
Planned Decentralized Infra
privy — Decentralized VPN
A peer-routed VPN exploring decentralized networking primitives — NAT traversal, peer discovery, and encrypted tunneling without a central operator.
RustP2PNetworking
Planned Blockchain — Ethereum
Reth Contributions
Working contributions to Reth, the Rust Ethereum execution client — the most direct path into production-grade blockchain infrastructure code.
RustEthereumReth
Stack

The full toolkit.

A decade of backend and blockchain systems — Rust sits at the center going forward.

// Rust & Blockchain

RustSolidityVyperEthereum SolanaPolkadotEVMLayer 2 Smart ContractsWeb3.js / Ethers.jsIPFS Gas OptimizationTruffle / HardhatSubstrate

// Backend & Systems

C#.NET / .NET CoreNode.jsGo ASP.NET MVCEF / LINQSystem Design MicroservicesEvent-Driven ArchitectureDDD CQRSRabbitMQ / Kafka

// Data & Infra

PostgresSQL ServerMySQLArangoDB MongoDBRedisDockerAWS / Azure / GCP CI/CD

// Architecture & Security

RESTful / GraphQL / gRPCOAuth / JWT Smart Contract AuditingCross-chain / Bridges Consensus MechanismsState Channels / Sharding
Contact

Let's talk.

Open to Rust and decentralized infra roles, systems design work, and conversations with teams building distributed systems. Also open to remote C# / Node work — a decade of production experience there isn't going anywhere.

Short is fine. I reply fast.