<Tanim Istiak/>

A CSE Grad. Software Engineer at SKN IT. Specialized in JavaScript (Node JS, Express JS, React JS, Next JS, Typescript, React Native) | Cloud Deployment (AWS) | Database Management (PostgreSQL, MongoDB). Interested in DSA. AI/ML Enthusiast. Problem Solver.

Dhaka, Bangladesh

About Me

My passion lies in full-stack development, building complete, end-to-end applications. My technical toolkit is centered around modern JavaScript and cloud infrastructure.

On the frontend, I use React and Next.js with TypeScript to build fast, scalable, and type-safe web applications. I also have experience extending this knowledge to mobile development using React Native.

For the backend, I am proficient in creating robust and efficient REST APIs with Node.js and Express. I'm comfortable connecting to both NoSQL databases like MongoDB and relational databases like PostgreSQL, choosing the right tool for the job.

To complete the development lifecycle, I have hands-on experience with DevOps principles, using Docker for containerization and deploying applications on AWS.

Work Experience

Software Engineer

SKN ITFull-Time

May 2025 - Present · London, United Kingdom

  • Built and shipped a full-stack SaaS platform for UK tax practices — accountants use it daily to manage clients, invoices, and filings. Grew monthly active users by 30%.
  • Developed a cross-platform mobile app (iOS & Android) for tax practice clients — featuring push notifications, document uploads, invoice payments, and deadline tracking all in one place.
  • Designed a secure multi-tenant auth system with MFA and role-based access control, cutting auth-related support tickets by 40%.
  • Automated UK tax filings and company verification by integrating HMRC, Companies House, and Royal Mail APIs — halved manual data entry for accountants.
  • Optimized the platform's data layer to keep P95 response times under 150 ms while reducing infrastructure costs by 20%.
  • Set up zero-downtime deployments with blue-green releases, shrinking release cycles from weekly to daily.

Software Engineer

GizantechFull-Time

Sep 2024 - Apr 2025 · Dhaka, Bangladesh

  • Built a real-time IoT dashboard that ingests data from ESP32 devices via AWS IoT Core — giving operators live visibility into device status and sensor readings.
  • Developed a Starlink usage dashboard that tracks bandwidth consumption, billing plans, and auto-renewals for a major Australian ISP vendor.
  • Shipped a fitness tracker web app and a custom Shopify-based ecommerce solution, handling everything from storefront design to order management.
  • Streamlined delivery across all projects with containerized environments and automated CI/CD pipelines, cutting deployment time by 50%.

Software Engineer

Psycure OrganizationFull-Time

Sep 2023 - Aug 2024 · Dhaka, Bangladesh

  • Built Psycure's web platform and Android app from the ground up — a mental health service where users book therapists, attend video sessions, and track their wellbeing. Drove a 30% increase in user engagement.
  • Owned the full product lifecycle: gathered user feedback, ran A/B tests, and iterated on features to continuously improve the patient and therapist experience.
  • Led the engineering team's Agile adoption — introduced daily standups, sprint planning, and Kanban boards, accelerating delivery by an average of three weeks per project.

Skills & Technologies

Frontend Development

JavaScript (ES6+)TypeScriptReactNext.jsReact NativeReduxZustandTanStack QueryReact Router

UI & Styling

Tailwind CSSShadcn UIMaterial UIBootstrapFigma

Backend & Databases

Node.jsExpressNestJSMongoDBPostgreSQLRedisPrismaNodemailerAWS SDKMulterMongooseZodclass-validator

DevOps & Cloud (AWS)

DockerAWSEC2S3ECSECRRoute 53AmplifyIAMCustom VPS (Hostinger, Linode, GoDaddy, etc.)ServerlessLambdaIoT Core

Automation

CI/CDGithub ActionsJenkins

Authentication & Services

AWS CognitoPassportJWTOAuthOIDCFirebaseFirebase Realtime DatabaseSNSSES

Tools & APIs

GitPostmanAgoraZoom API

SDLC

ScrumKanbanWaterfall

Project Management

ClickupJira

Projects

Psycure

A modern, responsive, functional web application built for psychologist booking, session conducting, counselling, and to improve overall mental health assessment process much easier with user, psychologist and admin dashboards.

React JSMaterial UITailwind CSSNode JSExpress JSFirebaseMongoDBReduxAgoraLinode
Live

Psycure Android App

A fully functional android app for Psycure to book session, live chat, mood journal, daily assessment, video session, meditation and to improve the users journey to mental health.

React NativeFirebaseRealtime DatabaseAgoraReact Native Track PlayerNode JSExpress JSMongoDBPlay Console
Live

TaxPlus Accountants

A fully functional web application system to manage an accountancy and consultancy firm's day to day operations consisting admin, staff, 3rd party vendor and client dashboards.

Next.jsTailwind CSSDaisy UINode.jsExpress JSMVCZustandPostgreSQLCognitoPrismaS3NodemailerMulterJWTSESEC2AmplifyRoute53Whatsapp SDKAWS SDK
Live

Outback Comms

A web application to serve a major Starlink vendor in Australia to track the user, analytics, internet usage, billing plan, package auto renewal, data from micro controllers.

ReactNode JSExpress JSDockerStarlink APIPostgreSQLPrismaReduxEC2Cognito
Live

Current Interests & Exploration

Beyond my professional work with web technologies, I'm passionate about exploring new fields. I dedicate my personal time to learning about Artificial Intelligence and high-performance backend systems, applying my knowledge to small personal projects.

Artificial IntelligenceMachine LearningPythonGo (Golang)Large Language Models (LLMs)Google GemmaPyTorchTensorFlowScikit-learnOpenCVPandasNumPyAgentic AIN8N