Hamza Ali / Backend developer

Java · Spring Boot · A little curiosity

Behind the scenes.
At the heart of it.

I’m Hamza Ali. I build useful backend systems that turn complex data into clear experiences, from pronunciation practice to connected healthcare workflows.

Explore selected work Let’s talk

SpeakRightStudy / 001

SofiCheckStudy / 002

PulseTrackStudy / 003

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Living systemsASCII / 004

Original procedural art. Not project screenshots.Into the work

01 / Selected work

Different problems.
Thoughtful systems.

Understand the data. Define the boundaries. Build something useful.

01 / Language & learningIn progress · Final year project

Connection study / 01Original digital artwork

Language & learning

SpeakRight

A little feedback. A better next sentence.

Leading the backend of a Flutter pronunciation-training app. Word-level and IPA phoneme-level feedback helps learners understand their spoken English and find the next useful practice session.

Spring Boot
Azure AI Speech
PostgreSQL / Supabase
JPA + Flyway
Flutter

Engineering details

Designed the schema for users, practice attempts, scores, and phoneme-level statistics using JPA and Flyway migrations.
Maintain an incremental average of per-user, per-phoneme accuracy to identify the three weakest phonemes across a 100-sentence corpus.
Implemented UCB1 adaptive selection: the first 50–60 attempts emphasize weaknesses, then exploration ramps in to surface unpracticed sentences.
Coordinate a team of three: two developers and one UI/UX designer, across backend, mobile, and design.

Backend & coordination lead / Team of three

02 / Retrieval & generationMarch–April 2026

Connection study / 02Original digital artwork

Retrieval & generation

SofiCheck

Find what came before. Build what comes next.

A RAG-based service that checks proposed final year projects against archived department catalogues. Relevant historical work comes first; structured similarity ratings and explanations follow.

Spring AI
Qdrant
ONNX embeddings
Groq
MongoDB
React + TypeScript

Engineering details

Ingested PDFs into Qdrant with local ONNX embeddings for titles, abstracts, and metadata.
Integrated Groq-hosted chat models through Spring AI’s OpenAI-compatible client.
Recorded request dates, times, and token usage in MongoDB through a Spring AI advisor.
Served 187 requests with 200 OK responses during a 30-day Azure free-trial deployment, against an expected 50 from one student batch.
Built the Vercel-hosted frontend with backend health checks, draft autosave, local query history, and parsed result cards.

Visit frontend Frontend source

187 successful requests / 30-day trial. Current backend availability is not assumed.

03 / Event-driven systemsNovember–December 2025

Connection study / 03Original digital artwork

Event-driven systems

PulseTrack

One event. Many independent paths.

A distributed healthcare backend where patient creation triggers billing, analytics, and notifications. User-facing requests don’t have to wait for every downstream consumer.

Spring Boot
Kafka
gRPC
JWT
Docker
PostgreSQL

Engineering details

Separated core operations into independent Spring Boot services to improve fault isolation.
Used Kafka for asynchronous event consumption and gRPC for internal interactions requiring explicit contracts.
Centralized JWT-based authentication and request routing at the system boundary.
Containerized services with Docker and tested concurrent request patterns to identify bottlenecks.

Explore source

Independent service boundaries / Asynchronous downstream work

02 / In practice

Learning by
shipping.

Real codebases. Review feedback. The details between an endpoint and a usable application.

June 2026–Present

Remote

FlyRank AI

Back-End AI Engineering Intern

Built CRUD REST services with input validation and explicit status codes; containerized an application with Docker for consistent local and review environments.

More about the role

Diagnosed bugs in an existing codebase and worked through Git-based code review feedback.
Completed a track assignment with Supabase Auth signup/login, bearer-token middleware, and Swagger UI.
Worked with background jobs: return 202 immediately, run work in a worker, and expose results through a status endpoint.

May–July 2025

Islamabad, Pakistan · On-site

Octaloop Technologies

React Native Intern / Docspot

Developed Docspot’s Spring Boot backend for appointment data, authentication, and MongoDB persistence.

More about the role

Integrated real-time in-app calling and verified authentication and data consistency between the mobile client and backend.
Implemented React Native screens with API consumption and state management for user-facing workflows.

03 / Open source

Small fixes.
Shared progress.

Reading unfamiliar code, tracing the problem, and leaving a project a little better than I found it.

OtterMind Chat2DB

Data that stays saved.

Fixed BigQuery datasource persistence: project, email, and keyfile fields were dropped on save. Added them to the DataSource entity and update request.

PR #2179 · Merged / Closes #2178

OtterMind Chat2DB

A clearer connection.

Wrote a source-verified BigQuery connection guide covering service-account setup, JDBC configuration, and troubleshooting.

PR #2054 · Merged

secure-backup

Security, made usable.

Added a secure passphrase generator using crypto.getRandomValues, plus clipboard copying with a fallback for restricted webviews.

PR #18 · Merged

Browse merged pull requests

04 / Tools & foundations

A Java-first toolkit.

Grounded in database design, data structures, and practical backend development.

Languages

Java · Core Java · OOP · Streams API · JavaScript · TypeScript · SQL

Backend & APIs

Spring Boot · Spring Security · JWT · Spring AI · REST · gRPC · Hibernate · Spring Data JPA / MongoDB

Data & architecture

PostgreSQL · MySQL · MongoDB · Qdrant · Microservices · Event-driven architecture · Apache Kafka · RAG

Delivery & infrastructure

Docker · Multi-stage builds · Compose · Azure VMs · Flyway · Vercel

Testing & tools

JUnit 5 · Unit testing · Git · GitHub · Swagger / OpenAPI · Postman · Maven · npm

Core foundations

Data structures & algorithms · Database design · Service boundaries · Database sharding (conceptual)

Education

Mehran University of Engineering & Technology

B.E. Software Engineering
Jamshoro, Sindh, Pakistan

Aug 2023–Oct 2027 (expected) / CGPA 3.28

Completed coursework

Data Structures and Algorithms · Object-Oriented Programming · Database Systems · Operating Systems · Computer Networks · Discrete Structures · Formal Methods for Software Engineering · Data Science

Leadership

AWS OctoberFest.
A win, together.

Led Lowkey Legends through the October 2025 hackathon, coordinating feature ownership and execution. Built the Spring Boot backend with MySQL and Flyway, packaged with Docker multi-stage builds and Compose.

Winner / Team lead / October 2025

05 / The next connection

Let’s make
something useful.

↗

Have a backend problem, a project to discuss, or an opportunity to learn and contribute? I’d love to hear about it.

Emailtenacioushamza@gmail.com GitHubHamza-ali1223 LinkedInhamza-codes Phone+92 333 7034446 RésuméSoftware Engineering résumé

Behind the scenes.At the heart of it.

Different problems.Thoughtful systems.

SpeakRight

SofiCheck

PulseTrack

Learning byshipping.

FlyRank AI

Octaloop Technologies

Small fixes.Shared progress.

Data that stays saved.

A clearer connection.

Security, made usable.

A Java-first toolkit.

Languages

Backend & APIs

Data & architecture

Delivery & infrastructure

Testing & tools

Core foundations

Mehran University of Engineering & Technology

AWS OctoberFest.A win, together.

Let’s makesomething useful.

Behind the scenes.
At the heart of it.

Different problems.
Thoughtful systems.

Learning by
shipping.

Small fixes.
Shared progress.

AWS OctoberFest.
A win, together.

Let’s make
something useful.