Ship Backend Changes Faster Without Sacrificing Reliability
Principal-level platform and backend engineering for scaling teams that need to shorten delivery cycles without putting production stability at risk.
- Developer experience
- Backend architecture
- Observability
Independent, hands-on support. Available for fully remote engagements.
Trusted by Engineering Leaders
First-hand accounts of the technical leadership, delivery and collaboration brought to client teams.
John has a strong bias for action. He routinely takes the initiative to solve tough problems, gathers feedback, and delivers high-quality results quickly. He’s also a highly collaborative teammate who keeps everyone aligned through clear documentation, open discussion and proactively giving feedback to elevate those around him!
John joined our team at the end of 2024 and immediately raised the bar introducing tools and good practice in backend code development and CI that brought structure to our codebase from day one. As a Senior Backend Engineer, he led the hardest parts of our platform revamp, turning chaos into clean, scalable architecture with solid bases to continue growing. Any team building serious backend systems would be lucky to have him.
I worked with João at Flex for 2 years building a web-based ML scoring system for cold-call campaigns. He led architecture (front/back) and implemented nearly everything. Skilled, proactive and collaborative, he delivered fast and solved a major bottleneck. I'd gladly work with him again.
João was my colleague for 2.5 years at Flex and his skills are impressive. He was always able to come up with polished and comprehensive solutions from the get-go. He single-handedly built a model serving infrastructure from scratch, which was responsive, intuitive and robust all at once. He can certainly support pretty much any technical challenge you throw at him.
Technical work tied to operational impact
The goal is more stable systems, lower operational drag and better delivery capacity.
Faster engineering delivery (DevEx)
Trimming PR cycles, isolating flaky tests, tuning CI resource compute and building internal developer platforms that minimize cognitive load.
Reduced system bottlenecks
Build explainable platforms with explicit system boundaries.
Establishing a clean dependency graph isolates component logic, minimizes cognitive load and keeps codebases adaptable at scale.
Improved production reliability
Safeguarding platform stability so developers can ship with confidence.
Clearer system ownership
Make architecture, dependencies and failure modes easier for the team to understand.
Experienced engineering support for critical systems
Principal-level support across developer experience, backend, cloud, infrastructure and reliability.
Developer Productivity
Reduce delivery friction with workflows that help teams ship confidently.
- CI/CD pipelines
- Automations
- Internal tooling
Backend Systems
Build backend services that remain reliable under real production load, following best practices and industry standards.
- APIs and services
- Distributed workflows
- Performance tuning
Cloud Architecture
Design cloud foundations that are easier to operate, scale and maintain.
- AWS and GCP environments
- Deployment architecture
- Infrastructure review
Observability and Reliability
Make failures easier to detect, understand and fix before they become costly.
- Metrics and dashboards
- Alerting workflows
- Operational visibility
Good architecture must be explainable, reliable and future proof.
Resilient backend architecture is the ultimate engine for developer velocity.
Flexible Engagement Models
Two ways to work together, depending on your needs and stage.
Project-Based Engagement
Best for defined problems such as migrations, architecture reviews, performance improvements or delivery of a specific technical initiative.
Embedded Engineering
Best for teams that need experienced hands-on support inside an existing product roadmap or engineering workflow.
- Work directly with your engineering team
- Contribute to backend and infrastructure delivery
- Improve reliability, tooling and architecture over time
- Flexible support based on team needs
Know when senior support will help
Johntek is the right choice for you when:
Engineering velocity is slowing down
Time from ticket to deployment is too long; Engineers are losing time to unreliable workflows and tooling.
Systems are difficult to scale and maintain
System boundaries and ownership are unclear; Engineers must understand or modify too many unrelated components to deliver a change safely.
Deployments are risky or inconsistent
Automation is incomplete, releases behave inconsistently or deployment race conditions put production uptime at risk.
Your system is not properly monitored
Teams cannot see how systems are performing, detect meaningful anomalies early or diagnose latency and failures efficiently.
Tools organized by the problems they solve
Technologies are recommended by the use case and your business needs. These are a subset of technologies I master.
- Python, Go, APIs, services
- AWS, GCP, Docker, Kubernetes
- PostgreSQL, MongoDB, Redis
- Prometheus, Grafana, Alertmanager
- CI/CD pipelines, Developer tooling, Workflow automation
Ship faster with a more dependable platform
Book a brief 15-minute introductory call to identify current platform constraints, reduce delivery friction and prepare your backend architecture to scale confidently.