Portrait of John Doe, Senior Software Engineer

SENIOR SOFTWARE ENGINEER

Backend systems, cloud infrastructure & developer platforms.

See the work Get in touch
7+ years building production systems
Currently: Atlas API Platform
7+Years engineering experience
24Production projects
18Systems & APIs delivered
11Technical certifications
4Open source projects

Portfolio figures, self-reported and not externally verified.

01 / WHO I AM

John Doe is a software engineer specializing in backend systems, cloud infrastructure, APIs, databases and developer tooling.

He enjoys building reliable systems for organizations that need software capable of operating under real-world infrastructure constraints.

Based in Nairobi, Kenya. Open to selected engineering opportunities and technical consulting.

  • 01Distributed systems
  • 02Backend architecture
  • 03Cloud infrastructure
  • 04Developer platforms
  • 05API design
  • 06Databases
  • 07System reliability
  • 08Automation

02 / WHAT I'VE BUILT

Selected
work

Four systems. Hover to preview, open one to read how it was built.

    Case studies: Atlas API Platform and FlowPay.

    03 / WHERE I'VE WORKED

    Seven years, three teams.

    From supporting application development to leading backend architecture.

    Senior Software Engineer

    Nexa Systems · Nairobi, Kenya · 2023 — Present

    Responsibilities

    • Design backend services and APIs
    • Develop cloud-ready application infrastructure
    • Improve database performance
    • Build deployment automation
    • Diagnose production reliability problems
    • Collaborate with product and frontend teams

    Achievements

    • Led the modernization of several legacy backend services
    • Reduced deployment friction through automated CI/CD workflows
    • Introduced containerized development environments
    • Helped establish reusable API architecture patterns

    Software Engineer

    Orbit Digital Labs · Nairobi, Kenya · 2020 — 2023

    Responsibilities

    • Built backend APIs
    • Developed internal tools
    • Worked with relational and document databases
    • Supported production deployments
    • Collaborated with designers and frontend engineers

    Achievements

    • Delivered multiple production APIs
    • Helped migrate legacy services toward containerized infrastructure
    • Developed internal developer tooling that reduced repetitive deployment tasks

    Software Engineering Intern

    Kinetic Technologies · Nairobi, Kenya · 2019 — 2020

    Responsibilities

    • Supported application development
    • Wrote automated tests
    • Assisted with database maintenance
    • Debugged application issues
    • Documented technical processes

    04 / HOW I THINK

    Stack, in
    practice

    Not a list of logos: which technologies were actually used on which project. Hover a row or a project.

    Technologies used across the four selected projects

    Programming

    • C
    • C++
    • Python
    • JavaScript
    • TypeScript
    • Java
    • SQL

    Backend

    • Node.js
    • Express
    • REST APIs
    • Authentication
    • API architecture
    • Background processing

    Databases

    • MySQL
    • PostgreSQL
    • MongoDB
    • Redis

    Infrastructure

    • Linux
    • Docker
    • Git
    • GitHub Actions
    • Nginx
    • Cloudflare

    Cloud

    • AWS
    • Firebase
    • Cloud infrastructure
    • CI/CD
    • Containerized deployments

    Engineering

    • Distributed systems
    • System architecture
    • Performance optimization
    • Networking
    • Debugging
    • Reliability engineering

    05 / WHAT I'VE ACHIEVED

    Proof,
    not claims

    Recognition, education and certifications.

    Achievements

    • Engineering Excellence AwardNexa Systems
      2025
    • Open Source Contributor4 public projects
      —
    • SpeakerEast Africa Developer Conference
      2025
    • MentorNairobi Developer Community
      —
    • Technical LeadInternal Platform Modernization Initiative
      —

    Education

    • BSc Computer ScienceUniversity of Nairobi
      2015—19
    AlgorithmsOperating SystemsComputer NetworksDatabasesSoftware EngineeringDistributed Systems

    Certifications

    • AWS Certified Developer — Associate
      2025
    • Docker Certified Associate
      2024
    • Linux Foundation Certified System Administrator
      2024
    • Google Cloud Associate Cloud Engineer
      2023

    06 / HOW I EXPLAIN

    Writing

    Technical articles for engineers working on similar problems.

    2025

    Designing APIs for Unreliable Networks

    Technical article about designing resilient API systems.

     2024

    Containers Without the Complexity

    Practical discussion of containerized application deployments.

     2024

    Building Reliable Background Workers

    Technical article exploring queues, retries, and background processing.

    07 / WHAT I CAN DO FOR YOU

    Services

    Open for selected engagements and technical consulting.

    Design and implementation of production backend systems.

    Containerization, deployment automation, and infrastructure architecture.

    Reliable APIs and integrations for modern applications.

    Architecture reviews, infrastructure analysis, and engineering strategy.

    08 / WHAT PEOPLE SAY

    Voices

    Placeholder testimonials for this demo profile.

    “John brings a systems-level perspective to difficult engineering problems.”
    Portrait of Sarah Mwangi
    Sarah MwangiEngineering Manager, Nexa Systems
    “He has a strong ability to turn infrastructure problems into practical engineering solutions.”
    Portrait of David Kimani
    David KimaniProduct Lead, Orbit Digital Labs
    John Doe smiling toward the camera

    09 / CONTACT

    Let’s build
    something
    that stays up.

    Open to selected engineering opportunities and technical consulting. If you’re solving a real backend, cloud or platform problem, I’d like to hear about it.

    john.doe@example.com
    Download résumé johndoe.example.com