Full Stack AI Engineer.

Oct 2023 to Mar 2024

Full-stack Developer

Bilsida.se, Stockholm (remote)

• Developed a CMS for car dealers to manage listings, accessories, locations and salespeople
• Connected the dealer site to the public site, so updates reach users
• Used Appwrite for APIs and authentication, and optimized image and video loading

• Next.js
• Tailwind CSS
• shadcn/ui
• Appwrite
• Vercel

Jan 2024 to Dec 2024

Frontend Developer

Pflegetech (now CodeBanglaX), Dhaka

• Built and optimized an ERP UI with React
• Developed real-time ERP chat with WebSockets
• Used TanStack Query for data caching and to fix rendering issues
• Built user, role and permission management for administrators
• Managed two junior frontend developers: assigned tasks and reviewed their code before merging

• React
• WebSockets
• TanStack Query

Dec 2024 to Jul 2025

Full-stack Developer

VySy, Dhaka

• Developed microservices with NestJS, following clean architecture and modular design
• Integrated Redis caching to reduce database reads
• Connected backend APIs to the Next.js frontend through Server Components, and used ISR and SSR to improve load time and SEO
• Contributed to the CI/CD pipeline, code reviews and sprint planning

• NestJS
• Redis
• Next.js
• TypeScript

Aug 2025 to Oct 2025

Frontend Developer

admark.ai, Hamburg (remote)

Hamburg-based startup whose platform writes and optimizes social media posts from company data.

• 3-month contract in a three-person team with the CTO and CEO
• Built the Meta (Facebook and Instagram) account connection flow
• Integrated the OpenAI API and wrote the system prompts for post generation
• Worked on frontend design and architecture, and introduced an atomic design structure for component reuse

• Next.js
• Tailwind CSS
• shadcn/ui
• OpenAI API

Nov 2025 to Jan 2026

Full-stack Engineer (frontend focused)

Pimjo, Dhaka (on-site)

Hired for two of Pimjo's AI products: Meku, an AI app builder, and Aymo AI, a multi-model AI workspace.

• Integrated and evaluated models (Claude, OpenAI, MiniMax, DeepSeek), routing work to cheaper models by quality, cost and token use
• Tuned system prompts and improved Figma-to-code accuracy for Meku
• Added safety guardrails against phishing sites, GitHub and Supabase integration for generated apps, and an internal admin tool
• Worked on Aymo AI's first release: multi-model chat, file parsing, admin panel and Paddle billing

• Next.js
• Prisma
• PostgreSQL
• Claude API
• OpenAI API
• MiniMax
• Supabase
• NextAuth

Nov 2025 to Present

Senior Full-stack Engineer

Dialist, Canada (remote)

Luxury watch marketplace for the US and Canada, plus Private Exchange, a dealer-only trading app. Full stack on the web and backend for the mobile app, in a team of two backend and two frontend developers.

• Built the Marketplace API from scratch and launched it in the US: listings, offers, orders with Finix payments and escrow, and dealer subscriptions
• Integrated Clerk, Persona identity checks, EasyPost shipping, GetStream chat and Google Address Validation, with transaction caps, tax and per-country currency
• Split one API into two platform-dedicated services, and took over and stabilized the Private Exchange API with staging-verified releases
• Run the infrastructure for both products: AWS (EC2, ECS, ECR, S3, CloudFront), Cloudflare, Nginx, Docker, and GitHub Actions CI/CD with security scans and auto-rollback
• Load-tested the platform to 1 million requests and sized production for launch, with load balancers and backup servers
• Built observability with Prometheus, Grafana and Loki, with dashboards and Slack alerts for payouts, disputes and shipments
• Moved search from MongoDB Atlas Search to Elasticsearch, and added Redis caching and distributed cron locks
• Ran a security audit before launch and fixed the critical auth and webhook issues

• TypeScript
• Node.js
• Express
• MongoDB
• Redis
• Elasticsearch
• AWS
• Cloudflare
• Docker
• GitHub Actions
• Prometheus
• Grafana

Aug 2026 to Present

Senior Backend Engineer

OutCode, remote

Core double-entry ledger and bank integration layer for a US fintech platform that moves customer funds through a partner bank (ACH, wires, FedNow and internal transfers).

• Built the money-movement layer on a double-entry ledger in TypeScript and PostgreSQL: every posting is a balanced journal entry (Dr = Cr enforced in the database), idempotent and audit-logged
• Integrated the bank's core APIs: OAuth client-credentials auth, DDA and GL balances, internal transfers and posted-activity lookups, with typed clients and strict schemas that raise schema-drift alarms
• Designed safe outbound payments: the attempt is recorded before the bank call, unknown outcomes are never auto-retried, and a resolver confirms the real result against bank activity
• Built the ISO 20022 wire origination adapter: payload validation, dry-run XML, a clear staged vs released state, and write-once IMAD/OMAD capture
• Built reserve mechanics: a loss reserve funded only after two-person approval, floor alarms that never move money on their own, automatic absorption of ACH return shortfalls, and global lock ordering against deadlocks
• Built the sandbox certification evidence pack: allowlist redaction, a hard cap on real POSTs, a preflight gate, and a tamper-evident ZIP with SHA-256 per file in an S3 Object Lock bucket (AWS CDK). Ran the certification and fixed what it found
• Kept CI reliable: fixed race conditions in flaky tests, kept 1,500+ tests and e2e suites green, and managed migration ordering across parallel PRs
• Worked in a review-driven team (Jira, GitHub PRs) with the client's product and banking stakeholders, including standups and product reviews

• TypeScript
• Node.js
• Fastify
• PostgreSQL
• Kysely
• Zod
• Pino
• Vitest
• Testcontainers
• AWS
• GitHub Actions
• Jira