Backend & payments infrastructure
Services built for scale and uptime. Custody, settlement and payouts that never double-spend.
Go · Spring Boot · PostgreSQL · Redis · ETH · BTC · USDT
Malik Saad Hayat, Polyglot Software Engineer:
Software that holds up
in production
I build backends that move real money, AI agents that actually ship, and infrastructure that stays up.
Experience at
Neuralogic
GoVerta
Kerniq
Techsols
COMSATS
Where I work
From the first demo
to the system that ships
Role
Polyglot Engineer
Go · Python · TypeScript · Java
Specialism
AI Agents & RAG
MCP · LLMOps · Fine-tuning
Discipline
Distributed Systems
Backend · Cloud-native
The gap between demo and production
Demos are easy. Production is the job.
Malik Saad Hayat, known online as saadhtiwana, is a polyglot software engineer from Islamabad, Pakistan. He builds the parts that cannot fail: money movement, backends and AI agents.
Backends in Go and Spring Boot. Agents, RAG and MCP tooling in Python and FastAPI. Frontends in TypeScript and React. All shipped on Kubernetes, AWS and Terraform, with observability from day one.
Open-source contributor to the CNCF and the Linux Foundation (LFX).
What I take on
A few freelance slots, alongside full-time work.
AI agents & LLM engineering
Agents that use tools and recover on their own. Evals and cost control included.
Python · FastAPI · RAG · MCPFull-stack web development
Fast, clean apps that stay maintainable.
TypeScript · React · Node.jsDevOps & cloud
Reproducible infra and zero-downtime deploys.
Kubernetes · AWS · TerraformOpen source & code review
Contributor to the CNCF and LFX. Architecture advice and sharp, honest code review.
CNCF · LFXThe track record
Most recent first.
Software Engineer
Neuralogic · Texas, United States · Remote
Production crypto infrastructure: custody, settlement and payments.
- Built multi-chain self-custody for ETH, BTC and USDT. Verified end to end on-chain.
- Made double-spends structurally impossible with a crash-safe, concurrency-safe payout system.
- Shipped fail-closed money controls: exact accounting, idempotency, limits and manual review.
- Locked down key custody with AES-256-GCM and multi-gated mainnet signing.
- Closed 22 security and performance findings on a live backend.
PostgreSQLRedisDockerNginxGitHub Actions
Co-Founder
GoVerta · Islamabad, Pakistan
- Co-founded an open-source Go tooling org and software studio.
- Shipped developer tools, AI agents and cloud-native software.
- CNCF contributors. Open source is infrastructure.
Technical LeadershipProduct Strategy
Software Engineer Intern
Techsols International · Lahore, Pakistan
- Shipped features across React and Node.js apps.
- Built reusable components wired to Express REST APIs.
- Handled state, forms and validation in production.
ReactNode.jsREST APIs
Software Engineer Intern
Kerniq (Stealth Startup) · Latvia
- Built a Go video server that streams smoothly on slow connections.
- Wrote Go workers that turn uploads into streamable segments.
- Cut bandwidth with frame skipping and caching.
- Added Prometheus metrics and a Docker Compose dev setup.
GoFFmpegHLSPrometheusDocker
Education
COMSATS University Islamabad
Bachelor of Science, Computer Science
- Algorithms, operating systems, distributed systems and software engineering.
Problem SolvingData StructuresAlgorithmsOperating Systems+8 skills
Open source & production
Live from GitHub.
Reading GitHub…
Notes on the craft
Hard truths about APIs and DevOps.
17 Sep 2025 · Medium
Why Your REST API Sucks (And How to Fix It)
Pagination, versioning, errors and the security holes that quietly break production APIs.
RESTAPI DesignBackendSecurity
Read article
14 Sep 2025 · Medium
I Hate Docker Compose (And You Should Too)
Why Compose falls short for real local development, and what to use instead.
DockerDevOpsKubernetesSoftware Engineering
Read article
Have something that has to
hold up in production?
Backend, AI agents or infra. Tell me what you are building.
saadhtiwana works across…
BackendGoSpring BootREST APIsEvent-drivenMicroservicesPostgreSQLRedis
AI engineeringPythonFastAPIAI agentsMulti-agent systemsRAGVector databasesFine-tuningMCPLLMOps
CryptoETHBTCUSDT-TRC20HD walletsFrontendTypeScriptReact
InfrastructureKubernetesAWSAzureTerraformCI/CDDockerNginxPrometheus
Open sourceCNCFLFXCode qualityDeveloper tooling
Frequently Asked Questions
More questions? Email saadhtiwana@gmail.com.
Malik Saad Hayat, known online as saadhtiwana, is a polyglot software engineer from Islamabad, Pakistan. He builds crypto infrastructure, backends, AI agents and cloud infrastructure, and contributes to the CNCF and the Linux Foundation (LFX).
saadhtiwana is the handle of Malik Saad Hayat on GitHub, LeetCode and Medium. He is known for production backends in Go and Spring Boot, crypto custody and payments infrastructure, and AI agents and RAG pipelines in Python.
Saad is a Software Engineer at Neuralogic, building crypto infrastructure across custody, settlement and payments. He previously co-founded GoVerta, an open-source Go tooling studio.
He builds agents and multi-agent systems that plan, use tools and recover from failure, often via the Model Context Protocol (MCP). He pairs them with RAG, fine-tuning, evaluation pipelines and cost control.
COMSATS University Islamabad, Bachelor of Science in Computer Science, Grade A.
Yes, for a few select engagements: backends, payments infrastructure, AI agents, full-stack and DevOps. Reach him at saadhtiwana@gmail.com.