Senior Software Engineer

REZA

Distributed systems, resilient architecture and craft. I build backend and cloud platforms that stay calm under load.

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Across layers

Engineering across layers: from low-level runtimes to cloud-native platforms.

What I optimise for
  • Performance budgetsDecided up front, checked continuously.
  • High-throughput pipelinesEvent-driven where decoupling pays for itself.
  • Observability by defaultIf it can't be seen, it can't be operated.
Selected work

Systems and the trade-offs behind them.

See the case studies ↓
Selected work

Systems and the trade-offs behind them

A few engineering problems I've worked on, what I chose, and what it cost.

TIER Mobility

Event-driven customer-service automation

Problem
Customer-service tooling depended on synchronous REST calls between services, so one slow dependency slowed everything.
Trade-off
Accepted eventual consistency and some duplicated data in exchange for decoupling services from each other.
Outcome
Bots handle simple customer requests, easing the load on support agents. Services read essential data locally instead of calling each other.
KafkaDynamoDBNode.js
Exxeta

Cloud cost optimization (FinOps)

Problem
Customers were running cloud workloads without a clear view of cost versus performance.
Trade-off
Cost savings are only worth it if latency and reliability targets still hold, so changes are driven by measurement, not guesses.
Outcome
Customers adopted cost-efficient strategies while keeping performance high.
GoPythonAWSKubernetes
Exxeta

Backend services for automotive systems

Problem
Automotive platforms need services that scale with fleet size and stay maintainable over years.
Trade-off
Chose managed, horizontally scalable storage over relational flexibility, and designed access patterns up front.
Outcome
Scalable, maintained backend services in production for automotive customers.
KotlinAWSDynamoDB
TIER Mobility

Centralized task automation service

Problem
Automation logic was scattered across the system, hard to maintain, with slow 8-week delivery cycles.
Trade-off
A shared service adds a dependency, but removes duplicated logic and gives one place to improve.
Outcome
A cleaner, more cohesive system, and a team shipping in small Scrum iterations instead of 8-week cycles.
Node.jsMicroservicesScrum
Craft

How I work

Boring where it should be boring, careful where it matters.

Systems architecture

Event-driven designMicroservicesAPI designTrade-off analysis

Backend & cloud

KotlinGoPythonAWSDynamoDBKubernetes

Observability & automation

ELK stackMonitoringTask automationFinOps

Tooling & delivery

ScrumTeam leadershipUnit testingGraphQLVue.js
Lab

Why I decouple services

Slow down one downstream service and see how each design reacts.

120 msUser-facing latency (p95)
0%Requests failing
0 sProcessing lag

Illustrative model of the trade-off, not measured data.

Experience

Where I've worked

Apr 2024 – Present
Stuttgart, Germany

Senior Software Engineer · Exxeta

Scalable backend services for automotive systems and cloud-native solutions with a FinOps focus. Helping customers optimize cloud usage and adopt cost-efficient strategies without losing performance.

KotlinGoAWSDynamoDBKubernetesPython
Apr 2023 – Feb 2024
Berlin, Germany · Remote

Engineering Lead · TIER Mobility

Moved the team from 8-week cycles to Scrum with smaller iterations. Led the design of a microservice that centralizes task automation.

Node.jsVue.jsScrum
Aug 2022 – Apr 2023
Berlin, Germany · Remote

Senior Software Engineer · TIER Mobility

Built APIs and bots that automate customer-service tooling. Re-architected to an event-driven design with Kafka and DynamoDB, replacing cross-service REST calls with local data.

KafkaDynamoDBEvent-Driven
Oct 2019 – Aug 2022
Kiel, Germany

Senior Software Engineer · wobe-systems GmbH

Full-stack JavaScript on three projects from scratch. Built a monitoring system with the ELK stack and replaced Excel-based calculations with a C# desktop application.

Vue.jsGraphQLElasticsearchC#
Jul 2018 – Oct 2019
Germany

Web Developer (Working Student) · wobe-systems GmbH

Jan 2015 – Feb 2016
Esfahan, Iran

Software Engineer (Part-time) · APNE

Refactored legacy systems and wrote unit tests.

JavaUnit Testing
May 2013 – Oct 2014
Kuala Lumpur, Malaysia

Software Engineer · Exact

.NET, C# and SQL Server developer. Built an MVC application from scratch for a cloud solution dashboard project.

C#.NETSQL Server
Contact

Let's talk

Open to interesting conversations about distributed systems, cloud cost and engineering teams.

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