Available for backend roles

Daniel Mutuku

Backend Systems Engineer

7+ years shipping production systems. Now going deeper into why systems break, slow down, and fail at scale. Focused on distributed systems, event-driven architecture, and the kind of engineering that handles hard problems, not just working ones.

// Current Focus

The Deliberate Pivot

After 7 years shipping features, I became more interested in the infrastructure beneath them. This is an intentional, documented transition, not a career change, but a depth change.

Current Focus Areas
  • Distributed systems & microservices
  • Event-driven & messaging architectures
  • Data-intensive applications
  • Concurrency & parallel processing
  • System reliability, observability & failure handling
  • Backend performance & security fundamentals
Primary Languages
Go
Node.js

Studied for systems behavior,
not framework speed.

Systems Under Load

How does a service behave when it's receiving 10x expected traffic? When a dependency is slow? When a node disappears? I'm engineering for those questions.

🔗

Event-Driven Architecture

Moving beyond REST-only thinking into event streams, message brokers, and async patterns that decouple services and handle partial failure gracefully.

🔭

Observability & Reliability

You can't fix what you can't see. Building systems with structured logging, distributed tracing, and meaningful metrics from day one.

📖

Public Documentation

Every experiment, insight, and system failure I encounter is documented publicly. On GitHub as code, on Medium as write-ups, on LinkedIn as milestones.

// Technical Stack

Tools & Technologies

7 years deep across the full stack. Narrowing focus toward backend systems, but the breadth is a feature, not a bug.

Databases
PostgreSQL MySQL
Backend
Go Python Node.js Nest.js Laravel CodeIgniter
Frontend
React Next.js Vue
DevOps
Kubernetes Docker AWS
eCommerce & Integrations
WooCommerce API Dynamics/SAP ElasticSearch
Other
Machine Learning Agile/Scrum Web Scraping API Architecture
// Work Experience

Where I've Been

Oct 2017 — Present
Software Developer
Freelance · Remote · US, Europe & Africa
  • Built custom eCommerce platforms, logistics dashboards, CRMs, and payment systems using Laravel, React, Vue, Flutter, and Python.
  • Integrated systems with WooCommerce, ERP platforms, REST APIs, and payment gateways across full project lifecycles.
  • Designed and deployed backend architectures with focus on performance, security, and scalability.
  • Developed ML models, automation tools, and data scraping pipelines for data-driven clients.
  • Managed roadmaps, client communication, documentation, and delivery timelines end-to-end.
May 2020 — Jul 2023
Software Developer
Fort Sort Innovations Ltd · Nairobi, Kenya
  • Architected and shipped production systems using Laravel, PostgreSQL, Python, and modern frontend frameworks.
  • Led a small engineering team through full product lifecycle: design, development, testing, deployment.
  • Pitched product concepts to stakeholders and secured funding twice — directly enabling company growth.
  • Improved system performance via code optimization, caching strategies, and API redesigns.
  • Collaborated cross-functionally with product, operations, marketing, and leadership.
// Systems Depth Areas

What I'm Building Expertise In

01

Distributed Systems & Microservices

Service decomposition, inter-service communication, consistency patterns.

02

Event-Driven & Messaging

Async architectures, message brokers, event sourcing, CQRS.

03

Data-Intensive Applications

Database internals, query performance, replication, and sharding.

04

Concurrency & Parallelism

Go goroutines, worker pools, thread-safe design, race conditions.

05

Reliability & Observability

SLOs, error budgets, tracing, structured logging, on-call readiness.

06

Backend Security

Auth patterns, secrets management, supply chain security, threat modeling.

// Connect

Find Me Online

I document this transition publicly. Code on GitHub. Long-form writing on Medium. Milestones and insights on LinkedIn.

GitHub

Systems experiments & prototypes

Medium

Long-form technical write-ups

LinkedIn

Milestones, insights & postmortems

Email

daniel.mutuku404@gmail.com