Aditya Malu

Backend Engineer

Backend engineer building distributed services and REST APIs for production systems. Writes Java and Spring Boot, with some Go, on PostgreSQL, AWS and Kubernetes. Looking for a backend or SDE role with ownership of services and APIs.

Open to new roles · can join now

About

For the past year I worked at Tessell, a database-as-a-service company, on the part of the platform that changes customers' production databases: patching them, failing them over, resizing their storage. Every change had the same rule: it must not break anything.

Most of my work was in Java and Spring Boot, with some Go, on PostgreSQL and AWS. I like the unglamorous parts: careful migrations, validation that catches the bad request before it reaches a database, and test suites that prove two systems really behave the same.

Before that I built a digital-currency wallet on an NFC smartcard as an intern, and I still spend evenings on competitive programming.

500+Oracle servers running the listener patching I built
250+services using the DR drills I worked on
~50customers on the licensing changes
94%less memory per pod after moving to Go

Experience

  1. Jul 2025 — Sep 2026

    Software Engineer · Tessell

    • Oracle listener patching. On servers hosting several Oracle databases, the shared listener ran from the oldest Oracle Home, so it never got patched. I built the feature that moves it to the newest home, with downtime capped at 10 minutes and safe handling when a rollback fails. It runs on 500+ servers.
    • DR drills. Wrote the rules for PostgreSQL drills that fail over to the DR region and switch back, so customers can prove recovery works for audits without changing their setup for good.
    • Licensing. Moved licenses and scripts to be shared across subscriptions and added pay-as-you-go licensing, across 5+ services and about 50 customers, with zero-downtime migrations.
    • Bigger disks on gp3. Raised AWS storage support from 16 TiB to 64 TiB / 80k IOPS, so large disks stopped being forced onto io2 at about twice the cost. The choice is now a per-customer setting with no redeploy.
    • Java to Go. Helped port a core service to Go (1.75 GB → 100 MB per pod). I owned the licensing APIs: a 133-test suite run against both versions, and 27 issues fixed.
    JavaSpring BootGoPostgreSQLAWSKubernetes
  2. Sep 2024 — May 2025

    Project Intern · Sarvatra Technologies

    Built a Central Bank Digital Currency wallet that lives on an NFC smartcard: two Android apps in Java, a 10-command APDU protocol between card and phone, RSA-2048 / AES-256 secured sessions, and token locking so the same money can't be spent twice.

    AndroidJavaNFCCryptography
  3. 2021 — 2025

    B.E. Computer Engineering · PICT, Pune

    CGPA 8.82. Spent a good part of college on competitive programming.

Projects

  1. InfoCard↗

    An NFC smart-card app that keeps identity, healthcare and ticketing data in separate blocks, so each reader only sees what it's allowed to. Readers prove who they are with RSA challenge-response.

    JavaAndroidNFC / HCERSA

  2. Compute shape tool · internal, Tessell

    Adding a custom compute shape meant running two scripts and calling two services by hand for every tenant. I turned it into a small web tool with a preview step, so SREs do it themselves in about 5 minutes instead of 30.

    Spring BootReactTypeScriptDocker

  3. Interview Prep tools↗

    Five tools I built for backend interview prep, all on one page. AlgoScope traces 159 DSA problems step by step from real Java runs. Java Concepts Stepper walks through JVM internals, collections, concurrency and Spring. DB Concepts Stepper covers 71 database topics, from SQL to sharding, with runnable SQLite examples. OS Concepts Stepper covers 59 operating-system topics, from scheduling and deadlocks to paging and containers, with in-browser simulators. MachineCodingLab has 18 machine coding and LLD tasks with real test suites in Java, Python, Go and C++. The steppers have quizzes, and every tool has shareable links to individual problems and topics.

    Built with Claude Code as a pair programmer. Source: AlgoScope, Java, DB, MachineCodingLab

    JavaPythonGoC++SQLJavaScriptDocker

Contact

Let's talk.

I'm looking for my next backend role in Bengaluru, Pune, Hyderabad or remote. Email is the fastest way to reach me.

Languages
Java, Go, Python, C++, SQL
Stack
Spring Boot, PostgreSQL, MySQL, AWS, Kubernetes, Docker