Available for Q3/Q4
UTC+5:30 (US/EU/AU Friendly)
Start a ProjectI don't just write code — I build production-grade software that helps businesses acquire users, process payments reliably, and scale without technical bottlenecks.
SDTechWorld was established in 2020 as a modern freelance software engineering studio. Over the past 4+ years, we have partnered with ambitious founders and enterprise leaders worldwide, delivering over 20+ production web applications, SaaS MVPs, and complex payment systems across Europe, North America, and global markets.
Having collaborated directly with startup founders and enterprise leaders (such as Manuel Pierre Garnier at Brand-To-Product in Europe), we understand that clients need more than just syntax — they need a reliable freelance engineering partner who communicates clearly, respects deadlines, and takes full ownership of outcomes.
Whether architecting a distributed AI web app with Next.js & Python or securing multi-currency payment workflows, SDTechWorld focuses on sub-second performance, strict type safety, and robust maintainability.
I evaluate the business goal, user retention impact, and ROI before choosing architecture, avoiding over-engineering.
Rapid 2-week sprint cycles with strict TypeScript, modular components, and comprehensive automated test suites.
Clear daily updates on Slack/Linear, recorded Loom walkthroughs, and atomic GitHub pull requests. Zero guesswork.
Full IP ownership, thorough documentation, and clean handoff. You own 100% of your source code and infrastructure.
4+ Yrs
Shipping Code
20+
Global Deliveries
5.0 ★
Client Rating
Trusted by founders & teams across the US, UK, Europe & Australia
Active overlap with US (EST/PST), UK (GMT), EU (CET), AU (AEST)
Direct Slack/Linear updates, Loom demos & clear documentation
Strict TypeScript, automated CI/CD & atomic GitHub pull requests
Full codebase ownership, secure credentials & strict confidentiality
Curated technologies chosen for stability, scalability, and developer velocity. Every tool in this stack is backed by hands-on production experience.
App Router, SSR, Edge runtime, server actions & SEO
Complex state machines, custom hooks, reusable design systems
End-to-end type safety, generic utilities, zero 'any' policy
Responsive design systems, design tokens, sleek animations
Micro-interactions, layout transitions & scroll animations
Predictable multi-tenant global state management
Event-driven asynchronous APIs, microservices & tooling
High-throughput microservices & ultra-low latency endpoints
AI model orchestration, async data processors & workers
Idempotent endpoints, rate limiting, OpenAPI specifications
Schema design, Apollo Federation & client cache resolution
Enterprise backend architecture with clean dependency injection
Relational modeling, complex queries, connection pooling, ACID
In-memory caching, distributed locks, BullMQ queueing & PubSub
Document schema design, aggregation pipelines & replica sets
Type-safe ORM migrations, schema synchronization
ECS, S3, RDS, CloudFront CDN, Route53 DNS & IAM security
Multi-stage container builds, local dev parity & orchestration
Custom RAG pipelines, function calling, embeddings & streaming
Automated linting, test execution & zero-downtime deployment
Edge network delivery & cost-optimized S3-compatible cloud storage
Tech Stack Philosophy: Pick the simplest, most reliable technology that solves the business challenge with high velocity and zero unnecessary dependencies.
Real feedback from international founders, CEOs, and technical teams who have partnered with me for critical software deliveries.
CEO & Founder
Brand-To-Product
"I had the pleasure of working with Smit as a freelance software engineer, and I highly recommend him. He is professional, clear in his communication, and always takes the time to explain what will be done so there are no surprises along the way. On brand-to-product.com, Smit was instrumental in implementing the payment system, ensuring accessibility, and making the platform fully responsive. What impressed me most is how carefully he listens to the customer's needs and adapts his approach accordingly. He's also pragmatic and flexible, able to find effective solutions that fit within the available budget without compromising quality."
"Smit delivered our platform ahead of schedule with exceptional quality. His expertise in Next.js, TypeScript, and frontend performance is top-notch. Our page load speed dropped by 60% after his architecture refactor."
CEO & Co-Founder • TechStream
"Working with Smit was a breeze. He translated our complex business requirements into a simple, beautiful, and resilient interface. He communicates asynchronously without needing constant oversight."
Founder & Product Lead • GreenLabs
"Excellent technical execution and clear communication. Smit helped us migrate legacy services to modern Node.js and PostgreSQL with zero downtime and comprehensive test suites."
Head of Engineering • CloudScale
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