Senior Backend Engineer • Distributed Systems

Hi, I’m Joseph Bassey.I engineer high-performance backend architectures.

With over seven years of experience building cloud-native microservices, I design secure, scalable infrastructure for high-growth tech companies. Currently integrating Artificial Intelligence to build smarter, self-optimizing backend systems.

View Architecture My Engineering Philosophy

Berlin, Germany

The Stack

The tools, and the taste to use them.

The Stack

Go (Golang)Primary
Rust
Node.js
Python

Infrastructure

Kubernetes
Kafka
RabbitMQ
gRPC
Terraform
GCP / AWS

Databases

PostgreSQL
ScyllaDB
Elasticsearch
Redis

Current Focus

Deepening my craft in AI Engineering.

Years architecting backend systems

Experience

Companies I’ve engineered for.

Request Résumé

Qonto GmbHCurrent

The all-in-one business finance platform — business banking, invoicing, and spend management for European SMEs and freelancers.

Developer Experience & Embedded Finance

Highlights

Re-architected Qonto’s public API documentation (docs.qonto.com), retiring a hard-to-maintain monolith in favour of a Mintlify-powered platform wired to a GitHub Actions pipeline — turning docs into a codebase any engineer can contribute to with confidence.
Built a Shopify app that lets embedded partners generate compliant e-invoices directly from their storefronts.

Tech Stack

Go
Python
Kafka
PostgreSQL
Kubernetes

RoleSenior Backend Engineer

Upvest GmbH

Investment-as-a-service — the API infrastructure banks and fintechs use to offer stocks, ETFs, and crypto.

Multi-Tenant Trading Infrastructure

Highlights

Built event-driven gRPC APIs in Go, backed by Kafka and Kubernetes.
Redesigned the critical service architecture for multi-tenancy — cutting API latency by 25% and scaling customer acquisition.

Tech Stack

Go
Kafka
gRPC
Kubernetes
GCP

RoleGolang Product Engineer

Grey Finance

Cross-border banking for freelancers and remote workers — foreign-currency accounts and global payments.

Zero-Downtime Monolith Strangulation

Highlights

Migrated a legacy monolith to a scalable Go + PostgreSQL microservices architecture over gRPC.
Built a bespoke concurrency pipeline to migrate 10 million records in minutes — cutting response times by 40% and downtime by 90%.

Tech Stack

Go
PostgreSQL
gRPC
Microservices

RoleSenior Backend Engineer

JustWatch GmbH

A streaming search engine and data platform helping millions find where to legally watch films and shows.

Predictive Content Aggregation

Highlights

Engineered a high-throughput Elasticsearch and ScyllaDB architecture.
Aggregated massive streaming-preference datasets to power a personalized, multi-channel notification engine.

Tech Stack

Go
Elasticsearch
ScyllaDB
gRPC

RoleBackend Engineer

NetGuru

A digital product consultancy building web and mobile software for global startups and enterprises.

Cloud-Native Product APIs

Highlights

Designed cloud-native REST APIs in Node.js and TypeScript, backed by PostgreSQL and MongoDB.
Cut the bug rate by 25% through disciplined testing, and reduced backlog delivery time by 30%.

Tech Stack

Node.js
TypeScript
PostgreSQL
MongoDB

RoleBackend Engineer

About

Engineering Philosophy.

I believe that true scale requires ruthless engineering discipline. Over the last seven years, I have optimized data pipelines, slashed API latency, and architected cloud-native environments that process millions of events. For me, technology is about solving complex problems with elegant, resilient solutions. As I expand my expertise into Artificial Intelligence, my focus remains on building robust, intelligent systems that drive measurable impact and stand the test of time.

— Joseph Bassey, Berlin