AK
About

13 years building systems that don't break.

I'm Anup — a Principal Engineer / Solution Architect with 13+ years of experience. I've led backend and full-stack teams across Bolt (Berlin), Delivery Hero (Berlin), HERE Technologies, and others — shipping systems that served hundreds of millions of users.

I care about clarity over cleverness, boring infra that stays up, and domain models that make illegal states impossible. I write about those things too.

LinkedInGitHubanupkumar@live.in
Portrait of Anup Kumar
Pune, India · ex-Berlin, Germany
Career

Where I've built.

  • Senior Solution Architect / Principal Engineer · Pune, India

    Mar 2025 — Present

    Leading full-stack, DevOps, and agentic automation (MCP) delivery across multiple clients. Hands-on with Python, Node.js, React, Go, AWS/GCP, Kubernetes, Terraform.

  • Bolt · Berlin, Germany

    Jan 2023 — Nov 2024

    Tech Lead — Backend & Full Stack. Led rate limiting, circuit breakers, observability. Scaled Bolt+ Campaign (+15% users). Cut latency 35%, infra cost 10%. Handled 4K–10K RPS.

  • Delivery Hero · Berlin, Germany

    Aug 2021 — Dec 2022

    Senior Engineer — Backend. Led inventory system with state-machine modelling. Shipped 5+ vendor onboarding adapters across regions.

  • HERE Technologies · Pune, India

    Mar 2020 — Jul 2021

    Lead DevOps / Full Stack. Routing & Isoline services. RPA test automation. Performance tuning on real-time geo-APIs.

  • Highbreed (MRKT365) · Pune, India

    Aug 2018 — Feb 2020

    Senior Engineer — Full Stack. Built MRKT365 marketplace (SEO, freelancing, PM) end-to-end.

  • JetSynthesys (GREE Client) · Pune / Tokyo

    Sep 2016 — Jul 2018

    Tech Lead — Backend. Multiplayer systems for Knights & Dragons, Crime City — multi-million $ revenue titles.

  • Tata Consultancy Services · Pune, India

    Sep 2012 — Jul 2016

    Backend Engineer. Network automation for Telefonica & GE. 20+ Six Sigma process improvements; $100K ops savings.

Skills

The tools I've earned my scars with.

Backend
TypeScriptNode.jsPythonGoPHP
Frontend
ReactAngularTypeScriptWebpack
Data & Caching
PostgreSQLMySQLDynamoDBRedisMemcached
DevOps & Cloud
AWSGCPKubernetesDockerTerraformHelmJenkins
Observability
DatadogSumoLogicNewRelicELKPagerDuty
Blockchain
RustCosmWasmSolidityEthereum L2
Credentials

Certifications & education.

Education
B.E. in Computer Engineering
Savitribai Phule Pune University · First Class · 2012
Certifications
  • Cloud Computing (Foundation) — Tata Consultancy Services
  • Certified Lean Six Sigma Green Belt — Tata Consultancy Services
  • Agile Delivery Foundation (ITIL) — Tata Consultancy Services
  • Python Programming — Gold · TestDome
  • JavaScript Programming — Gold · TestDome
Let's build

Have a system that needs to scale — or stop breaking?

I work with a small number of teams each month on architecture reviews, scaling, and hands-on backend engineering. If that sounds like you, let's talk.

Book a callanupkumar@live.in