5
Languages
Typed, modern languages for scalable systems
JavaScript (ES6+)TypeScriptPythonCC++
Software Engineer
Architect of reliable, scalable systems
Backend-first full-stack engineer. NestJS · Django · PostgreSQL. LLM, RAG & semantic search systems
I build production software with clean architecture, strong data models, and polished interfaces that scale.
Core Stack
NestJSDjangoNext.jsTypeScriptPostgreSQLRedisDockerKubernetesAWS (EC2, S3)
Active Role
Driving backend architecture, API reliability, and delivery velocity across core products.
210+
Production APIs
NestJS · Prisma · TypeORM
115+
Django REST APIs
DRF · Celery · Redis
800+
Problems Solved
Codeforces · LeetCode · CSES
4
Contest Placements
ICPC · IUPC · Hacker Cup
What I’m building
- German language LMS (German Compass) — CEFR courses, batches, RBAC admin.
- Multi-tenant ERP (Sortorium) — subdomain tenancy, RBAC, HRM, Inventory, POS.
- Shopify e-commerce — Ella theme, Liquid, Storefront API.
Jubayer Ahmed
Software Engineer · Dhaka, Bangladesh
About
I'm a software engineer in Dhaka who builds the parts of a product most people never see — the APIs, the data models, the caching layers that decide whether an app feels instant or sluggish.
Most of my work lives in NestJS, Django, and PostgreSQL: multi-tenant ERP systems, salon and restaurant operations platforms, real-estate search. I care about clean architecture and SOLID because they're what let a codebase survive its second year.
Five years of competitive programming shaped how I think about problems — decompose, find the constraint, optimise what actually matters. These days I'm extending that into LLM and RAG systems.
- Based in
- Dhaka, Bangladesh
- Focus
- Backend architecture & AI integration
- Currently
- Software Engineer at GeekSSort
- Open to
- Full-time roles & freelance
Capability Map
ExperienceComfortable across the full stack — from API design and data modelling to UI delivery and AI integration.
7
Frontend
Accessible interfaces with performance-first rendering
React.jsNext.jsRedux ToolkitHTML5CSS3Tailwind CSSSSR/SSG
10
Backend
Robust APIs, auth, and service architecture
Node.jsNestJSDjangoDjango REST FrameworkREST APIsGraphQLMicroservices ArchitectureWebSocketsJWT AuthenticationRBAC
10
AI & ML
LLM workflows, retrieval pipelines, and semantic search
LLMsRAGNLPPrompt EngineeringEmbeddingsVector DatabasesOpenAI APILangChainLangGraphSemantic Search
7
Databases
Efficient schemas, indexing, and query optimization
PostgreSQLMongoDBMySQLRedisPrismaTypeORMFirebase
5
DevOps & Cloud
Containers, pipelines, and cloud deployment workflows
DockerKubernetesAWS (EC2, S3)CI/CD (GitHub Actions)Vercel
10
Tools & Platforms
Day-to-day delivery and developer experience tooling
GitGitHubPostmanVS CodenpmyarnESLintPrettierWebpackInngest
Project Index
All projectsEnterprise platforms, marketplaces, and developer tools — the work behind the résumé.
- 01
German Compass
EducationIn active development· Currently buildingGerman language learning platform for a Cumilla-based institute — a trilingual public site for course discovery and enrolment, backed by an LMS admin panel that runs batches, attendance, mock tests, certificates, and billing under role-based access.
Next.jsTypeScriptTailwind CSSDjangoDjango REST Framework+6 - 02
Sortorium
EnterpriseMulti-tenant ERP platform covering HR, inventory, and day-to-day operations, built on subdomain tenancy with role-based access across multiple branches.
Next.jsRedux ToolkitDjangoDjango REST FrameworkPostgreSQL+7Visit live site - 03
HireBD
PlatformFull-stack job marketplace where candidates browse and apply while employers post listings and manage applicants from a role-based dashboard.
Next.jsNestJSTypeScriptGraphQLPostgreSQL+7Visit live site - 04
Tapered
ProductA premium Shopify e-commerce store for a modern luxury clothing brand, built on the Ella theme with custom Liquid customisations, featuring curated collections and a seamless checkout experience tailored for the Bangladeshi fashion market.
ShopifyLiquidElla ThemeShopify Storefront API+1Visit live site - 05
RestroCore
ProductFrontend live· Backend in progressAll-in-one restaurant operations platform — point of sale, kitchen display, reservations, and an analytics dashboard in a single interface.
ReactTypeScriptViteTailwind CSSZustand+6Visit live site - 06
Geek Estates
PlatformHigh-performance real-estate platform for browsing property listings, tuned for server-side rendering, SEO, and cached search.
Next.jsNestJSTypeScriptGraphQLPostgreSQL+7 - 07
CF Ladder
Competitive ProgrammingCodeforces practice tracker with problem filtering by rating and tag, plus a dashboard for monitoring solve progress over time.
Next.jsExpress.jsMongoDBTailwind CSSAxios+5Visit live site - 08
Edulecta
EducationMERN eLearning platform with authentication, personalised course access, and learner progress tracking.
ReactNode.jsExpress.jsMongoDBJWT auth+6Visit live site
Proof Points
Contest placements and a competitive programming record built over five years.
600+
Codeforces
@_ultron
Solved 600+ problems across diverse difficulty levels, mastering algorithms, data structures, and optimization strategies.
200+
LeetCode
@Jubayer17
Solved 200+ problems focused on data structures and patterns, enhancing efficient coding and technical interview readiness.
40+
CSES
@GalvaaaTroN
Solved 40+ problems, improving algorithmic thinking and problem-solving skills.
ICPC Dhaka Regional 2025
Represented the team at ICPC Dhaka Regional, solved 3 problems, and gained teamwork and problem-solving experience under pressure.
DUET IUPC 2025
Secured an honorable position in DUET IUPC, solving 4 problems and showcasing teamwork and problem-solving skills.
Meta Hacker Cup 2025
Solved 2 challenging problems in Meta's global coding competition, demonstrating analytical and algorithmic skills.
PSTU IT Carnival 2025
Achieved 3rd position by solving 4 challenging problems, demonstrating problem-solving and analytical skills.
Start a Meaningful Build
Open to full-time roles, freelance projects, and collaboration. I’d love to hear what you’re building.
ahmedjubayer52@gmail.comDhaka, Bangladesh