Solution & System Architecture
Turning business problems into system boundaries, contracts, and integration strategies that stay coherent as they scale.
Open to architecture & technical leadership conversationsTechnical Lead, Solution Architect, Full-Stack Engineer, Co-Founder & CTO, AI-native Builder
Kartik TyagiI design systems, and lead the teams that build them.
I'm an engineer and architect who turns ambiguous problems into systems people can rely on — from legacy modernization to cloud-native platforms, security tooling, and AI-driven engineering workflows.
- 5+YearsEngineering, architecture & technical leadership
- 25+Legacy systemsCOBOL Pathway systems reverse-engineered for modernization
- 12+Products shippedAcross product, enterprise, security & open source
- 7.2k+SO reputationReaching 5.2M+ developers on Stack Overflow
01About
Engineer, architect, and perpetual builder.
I've spent the last five-plus years living at the intersection of engineering and architecture — writing the code, drawing the boundaries, and leading the teams that ship. My work ranges from reverse-engineering decades-old COBOL systems into modernization strategies, to standing up cloud-native platforms, to building cybersecurity and HR products from an empty repository.
What I enjoy most is the shape of a problem before the code exists: where the seams should be, which constraints actually matter, and how a system will behave a year after launch when the load, the team, and the requirements have all changed. I care about decisions that age well — clear contracts, honest trade-offs, and architecture a new engineer can reason about.
Lately, a large part of my craft is AI-native engineering. I treat modern models and agents as a genuine part of the toolchain — for exploring solution space, reverse-engineering the unknown, accelerating modernization, and building context-aware workflows that compound what a small team can deliver.
Think in systems. Build for the people who inherit them. Keep exploring.
How I think
- 01
Architecture is decisions, not diagrams
A diagram is the artifact; the value is the set of trade-offs behind it. I make the constraints explicit and choose deliberately, so the system still makes sense when the requirements move.
- 02
Optimize for the engineer who inherits it
Code is read far more than it's written. Clear seams, honest names, and boring solutions beat cleverness every time someone new opens the repo.
- 03
Understand before you replace
You can't modernize what you don't understand. I reverse-engineer the why behind a legacy system before touching the how — that's where the real risk hides.
- 04
Leverage over effort
The best engineers multiply their impact — through automation, tooling, AI, and mentoring. I'd rather build the thing that builds the things.
02Expertise
What I do best.
I work across the full arc — from the first architecture sketch to the system running in production, and the team that keeps it there.
Full-Stack Engineering
End-to-end delivery across Java/Spring, Node/Nest, and React/Next — from data model to interface, with an eye on maintainability.
Cloud & Distributed Systems
Cloud-native platforms on AWS with infrastructure as code, containers, observability, and pragmatic reliability.
Legacy Modernization
Reverse-engineering decades-old systems into modernization roadmaps — COBOL to Java, monoliths to services, without breaking the business.
Cybersecurity Engineering
Threat-intelligence, exposure management and analysis platforms — building the tooling that defenders actually operate.
AI-native Engineering
Using modern models and agents as part of the toolchain to accelerate delivery, explore solutions, and build context-aware workflows.
Product & Technical Leadership
Leading teams from zero to shipped — setting standards, mentoring engineers, and translating ambiguity into a plan.
The toolbox
Languages & Frameworks
- Java
- Spring Boot
- Node.js
- TypeScript
- JavaScript
- NestJS
- Express.js
- React.js
- Next.js
- React Native
Cloud & DevOps
- AWS (EC2 · S3 · EKS · R2)
- DigitalOcean
- Terraform
- Docker
- Kubernetes
- Jenkins
- GitHub Actions
- CI/CD
- Firebase
- Jest
Data & Messaging
- PostgreSQL
- MongoDB
- MySQL
- Oracle Database
- DynamoDB
- ClickHouse
- ScyllaDB
- OpenSearch
- Valkey
- Sequelize
Architecture & Tooling
- Microservices
- REST APIs
- GraphQL
- WebSocket
- WebRTC
- Grafana
- Prometheus
- Dynatrace
- Proxmox
- Swagger
AI · IDEs · Models
- Cursor
- Devin
- OpenCode
- Windsurf
- GitHub Copilot
- Claude (Opus · Sonnet)
- Composer
- GPT
- Gemini
- Hugging Face
03Experience
Where I've done the work.
From founding a studio to leading enterprise modernization — a path through product, consulting, and platform engineering.
- 2024 — Present
Creospan
Pune, India- Technical LeadOct 2025 — Present
- Senior EngineerDec 2024 — Sep 2025
Leading solution architecture and legacy modernization for large enterprise platforms, and turning modern AI tooling into a real engineering advantage.
- Reverse-engineered 25+ COBOL Pathway systems, transforming complex legacy internals into scalable modernization and engineering strategies.
- Led solution architecture across COBOL, Java, microservices, AWS, APIs, and enterprise messaging, with clear migration and integration boundaries.
- Designed a closed-loop engineering solution combining OpenCode AI, contextual learning, and automated validation for COBOL-to-Java modernization.
- Delivered enterprise integration using MuleSoft, AWS, IBM MQ, Terraform, and modern DevOps practices.
- Solution Architecture
- COBOL → Java
- Microservices
- AWS
- MuleSoft
- IBM MQ
- Terraform
- AI-native Dev
- 2024
Artios Media Consulting
ConsultingHyderabad, India- Technology Solutions Consultant2024
Architected and delivered a portfolio of cybersecurity, threat-intelligence and compliance products for multiple clients.
- Architected and delivered BreachX, PrivilegeZero, CTEM, and Malware Bucket — cybersecurity and threat-intelligence platforms.
- Built Credibl and EthixFirst, with scalable workflows for certificate generation, verification, workplace ethics, and compliance.
- Engineered full-stack and mobile solutions using React, React Native, Node.js, cloud services, and large-scale bulk operations.
- React
- React Native
- Node.js
- MongoDB
- AWS
- Threat Intel
- 2023 — 2024
Grid Dynamics
Bengaluru, India- EngineerSep 2023 — Mar 2024
Built scalable backend services and responsive front-ends for enterprise clients, with automated cloud delivery.
- Engineered scalable REST APIs and backend services using NestJS, TypeScript, and Prisma, focused on maintainability and performance.
- Developed responsive React.js applications with MUI and integrated enterprise services including Twilio and Intelics.
- Implemented AWS-based deployment and CI/CD automation, streamlining build, release, and production delivery.
- NestJS
- TypeScript
- Prisma
- React.js
- MUI
- AWS
- CI/CD
- 2021 — 2023
Mutual Mobile
Hyderabad, India- EngineerAug 2022 — Feb 2023
- Associate EngineerFeb 2021 — Aug 2022
Full-stack delivery on transformative digital products for global brands and startups, across the full SDLC.
- Implemented REST API integrations, asynchronous workflows, state management, and third-party integrations across enterprise applications.
- Built APIs with NestJS, TypeScript, MongoDB, Jest and Swagger; crafted interfaces in React.js and MUI.
- Contributed to debugging, code reviews, Agile delivery, and production support throughout the software lifecycle.
- NestJS
- TypeScript
- MongoDB
- React.js
- Jest
- Swagger
- AWS
- 2020 — Present
Adorway
FounderIndia- Co-Founder & CTOJan 2020 — Present
Co-founded a product & services studio, owning technical architecture and delivery across HR tech, cyber-safety and consumer platforms.
- Led technical architecture and delivery for Orkaiva HRM, designing scalable foundations for workforce management.
- Architected CopConnect — cybercrime assistance through expert discovery, secure communication, and mobile workflows.
- Built SLR Astro and diverse client platforms end to end, and scaled EthicalLearner, an EdTech platform, from the ground up.
- Node.js
- Express
- MongoDB
- React
- React Native
- Microservices
04Projects
Things I've built.
Products, platforms, security tooling, open source and experiments. Different problems, one throughline: systems designed to last.
Product
Orkaiva
A modular, multi-tenant HRM platform.
A scalable HR management platform architected with modular services, workflow automation, multi-tenancy, and modern cloud-native infrastructure.
- Modular service boundaries designed for multi-tenant scale.
- Workflow automation across the employee lifecycle.
- Microservices
- Node.js
- React
- Multi-tenancy
- AWS
Product
Product
CopConnect
Cyber-safety, made reachable.
A cyber-safety platform for the ISAC Foundation connecting people with cybersecurity and cybercrime assistance through a mobile-first experience — expert discovery, secure communication and case collaboration.
- React Native
- Node.js
- Secure comms
- Mobile
Social impact
Product
EthixFirst
Workplace ethics & professional integrity.
A workplace ethics platform supporting certification, employee ratings, reporting, and career-protection workflows.
- React
- Node.js
- Workflow
- Compliance
Product
Product
SLR Astro
Consultations, delivered on mobile.
A mobile consultation platform supporting digital consultations, user workflows, and end-to-end service delivery.
- React Native
- Node.js
- Realtime
Mobile
Professional
cobol2java
Modernization intelligence for legacy systems.
A COBOL-to-Java migration intelligence platform: a closed-loop system pairing AI with contextual learning and automated validation to reverse-engineer legacy internals and drive modernization at enterprise scale.
- Reverse-engineers legacy internals into modernization strategy.
- Closed-loop validation keeps AI-generated migrations honest.
- COBOL
- Java
- OpenCode AI
- Contextual Learning
- Validation
Enterprise
Professional
Credibl
Digital credentials at scale.
A bulk certificate creation and management platform — a certificate editor plus a generation engine that automates large-scale digital credential workflows.
- React
- Canvas / SVG
- Node.js
- Bulk Ops
Client work
Security
PrivilegeZero
Cyber threat intelligence, operationalized.
A cyber threat intelligence platform for threat analysis, intelligence aggregation, investigation, and day-to-day security operations.
- Threat Intel
- React
- Node.js
- Data Aggregation
Security
Security
BreachX
Attack-resistance & proactive defense.
A cybersecurity platform connecting threat intelligence, vulnerability research, and security researchers to enable proactive defense.
- Vulnerability Research
- React
- Node.js
Security
Security
CTEM
Continuous Threat Exposure Management.
A solution for discovering, prioritizing, and managing an organization's security exposure on a continuous basis.
- Exposure Mgmt
- Prioritization
- Automation
Security
Security
Malware Bucket
Automated malware analysis.
A malware analysis and detection platform for automated file analysis and security assessment.
- Malware Analysis
- Automation
- Node.js
Security
Open Source
React-DevDotTo
A published NPM package for React devs.
An open-source NPM package for React developers, focused on reusable functionality and developer productivity.
- React
- TypeScript
- NPM
- DX
NPM · Open source
Experiment
Ananta
A calmer new-tab, your way.
A browser new-tab productivity extension providing a customizable homepage and a personalized browsing experience.
- Browser Extension
- JavaScript
- UX
Browser extension
05Engineering × AI
How AI fits into my engineering.
AI isn't a novelty in my workflow — it's part of the toolchain. I treat modern models and agents the way I treat a compiler or a debugger: leverage that changes what a small team can deliver, used with judgment and verified against reality.
ai-native-workflow
01
Reverse-engineering the unknown
When the only documentation is the source, I use AI to read decades-old systems fast — mapping COBOL internals, tracing control flow, and surfacing the hidden business rules that a modernization plan depends on.
02
Exploring solution space
Before committing to an architecture, I use models to pressure-test approaches, sketch alternatives, and find the trade-offs early — so the design that ships is one I actually chose, not one I stumbled into.
03
Closed-loop modernization
I build workflows where AI proposes changes, automated validation checks them, and context accumulates over time — keeping AI-generated migrations honest and turning one-off translations into a repeatable system.
04
Context-aware automation
The value isn't autocomplete — it's engineering context. I wire up agents that understand a codebase's conventions and history, then let them handle the mechanical work so the team spends its attention on decisions.
IDEs & Agents
- Cursor
- Devin
- OpenCode
- Windsurf
- Copilot
Models
- Claude Opus
- Claude Sonnet
- Composer
- GPT
- Gemini
Applied to
- Modernization
- Reverse-engineering
- Automation
- Architecture
Used well, AI compounds a team's knowledge. Used carelessly, it compounds its mistakes. The engineering is in the difference.
06Beyond the code
Life happens away from the keyboard, too.
I think in systems, but I recharge in the open air. A few things that keep me curious and balanced.
Cricket
Equal parts strategy and patience — a captain's game of reading situations and setting the field before the ball is bowled.
Billiards
Thinking two or three shots ahead. The satisfying kind of problem where position matters as much as the pot.
Mountains
I recharge by heading to the mountains. The best perspective on a hard problem usually shows up somewhere above the tree line.
Innovation & exploration
I'm happiest with a blank repo and a new idea — prototyping emerging tech, chasing what's next, and building things just to understand them.
Recognition
- 7.2k+ reputation on Stack OverflowAnswers that have reached 5.2M+ developers worldwide.
- Hackathon wins — HackVSIT & HackPCBTRecognized for building under pressure at national hackathons.
- MongoDB Node.js Developer PathMongoDB Certification Program.
- AMCAT Technical CertificationAspiring Minds — SHL.
Education
B.Tech, Computer Science & Engineering
Lovely Professional UniversityPunjab, India
What's next
Let's build something that lasts.
Whether it's an architecture you're shaping, a hard modernization problem, or a product still on the whiteboard — I'd genuinely like to hear about it.
Pune, India · Open to architecture & technical leadership conversations