Justin Johnson

00 · IMPACT

Outcomes that matter

Numbers from real systems, real teams, real stakes.

~30%

Provisioning overhead cutReusable Terraform & Ansible modules across AWS and GCP

~25%

Deployment time reducedStandardized Jenkins CI/CD with Docker & Helm

~30%

Deployment failures downAutomated pipelines shipping to production multiple times/week

~20%

Compute costs savedOptimized container scheduling and workload allocation on EKS

5+ hrs

Saved per sprintInternal developer tooling that standardized environment setup

900+

Agents directedLarge-scale enterprise operations across multiple lines of business

+30%

Cross-sell close rateTargeted training programs for a 176-agent customer service team

01 · PROJECTS

Featured Work

Real deployed systems — production patterns, not tutorials.

// AWS Solutions Architecture + DevOps

AWS Hybrid Architecture Portfolio

★ — stars — commits

A set of deployed, production-pattern AWS systems demonstrating Solutions Architect–level design decisions alongside DevOps operational rigor. Each module includes architecture decision records (ADRs) documenting the trade-offs made.

arch modules

long-lived credentials

ADR

per module

100%

IaC provisioned

01 · Serverless API 02 · Event-Driven Architecture 03 · Static Site + CDN 04 · CI/CD with OIDC ADR Decision Records

Serverless REST API — API Gateway, Lambda, DynamoDB
Event-driven system with SNS, SQS, dead-letter queues
Secure static delivery: S3 + CloudFront, private origins
GitHub Actions OIDC — zero long-lived AWS credentials
Architecture decisions documented per module
Deployed and tested against real AWS services

// MLOps / LLMOps Platform Engineering

LLMOps Reference Platform

6 stages LLMOps platform

End-to-end LLMOps platform built to production deployment standards: model serving, RAG pipelines with vector search, CI/CD-gated evaluation, Prometheus observability, and multi-agent orchestration — deployed on containerized infrastructure reflecting enterprise AI patterns.

MLOps stages

external API calls

Live

WebSocket UI

Eval

CI pipeline

Stage 1 · Model Serving Stage 2 · RAG Pipeline Stage 2.5 · DevOps AI Agent Stage 3 · CI/CD for AI Stage 4 · Observability Stage 5–6 · Multi-Agent UI Security Hardening

Full LLMOps lifecycle: model serving, RAG, CI/CD evaluation, and observability
Zero external API dependency — local inference via Ollama with MLflow experiment tracking
DevOps AI agent with Docker socket access for container orchestration via natural language
CI/CD evaluation gate: automated pytest eval suite runs on every model or prompt change
Production observability: Prometheus, Grafana, and Evidently AI for model drift monitoring
Multi-agent orchestration with streaming React/WebSocket UI

02 · INFRASTRUCTURE LAB

Live Infrastructure Metrics

Real-time simulation of a production Kubernetes cluster — the kind of environment I build and operate.

CPU Utilization LIVE

64%

3/5 nodes active · EKS prod-cluster

Memory Usage LIVE

71%

11.4 / 16 GiB allocated

Deploy Success Rate 30d

98.2%

147 deployments · 3 rollbacks

Container Health LIVE

12/12

All pods running · 0 restarts (1h)

Pipeline Queue JENKINS

api-service / main ✓ PASS

worker / deploy-prod ● RUNNING

infra / terraform-plan ✓ PASS

ml-pipeline / retrain ● QUEUED

Uptime LIVE

99.97%

Last incident: 47 days ago

04 · EXPERIENCE

Career Timeline

Senior DevOps Engineer · CallTek

Oct 2024 – Present

Designed Jenkins CI/CD pipelines with Docker and Helm across dev, staging, and production. −25% deploy time
Built reusable Terraform & Ansible modules for AWS and GCP multi-region environments. −30% provisioning effort
Automated backup and disaster recovery workflows, improving RTO and platform resilience against unplanned outages.
Optimized container resource allocation and workload scheduling on managed EKS clusters. −20% compute cost

Freelance Software & DevOps Engineer · Independent

Oct 2023 – Oct 2024

Delivered cloud infrastructure, full-stack apps, and DevOps tooling for multiple clients, consistently on schedule.
Shipped React and Node.js applications end-to-end: UI, API integration, and AWS deployment with automated CI/CD.
Built and maintained personal AWS projects at production-grade reliability using containerization and automated pipelines.
Configured AWS-native services including S3, CloudFront, Lambda, and API Gateway for client production workloads.

DevOps / Software Engineer · Bell Media

Mar 2022 – Oct 2023

Implemented automated CI/CD pipelines enabling multiple production releases per week. −30% deploy failures
Built React components and Node.js REST APIs for internal editorial and content-ops tooling.
Created internal developer tooling that standardized environment setup and deployment. 5+ hrs saved/sprint
Embedded vulnerability scanning and secrets detection into delivery pipelines with the security team.

Senior Operations Manager · Bell Canada

Feb 2021 – Mar 2022

Directed operations spanning 900+ agents across multiple lines of business, maintaining SLA targets for enterprise service delivery. 900+ agents
Identified bottlenecks across tier-1 support workflows using data analytics and reporting. +15% SLA attainment
Led cross-functional incident response coordination, reducing mean time to resolution across business units.
Aligned operational reporting with ISO 27001 governance requirements across multiple business units.

Operations Manager · Bell Canada

Apr 2020 – Feb 2021

Managed 176 agents and implemented targeted training programs. +30% cross-sell close rate
Deployed KPI reporting dashboards that measurably reduced undetected SLA breaches across service lines.
Optimized staffing allocation models and shift workflows, reducing overtime costs.
Worked with IT to implement proactive monitoring alerts for earlier issue detection before customer impact.

05 · SKILLS

Technical Toolkit

Hover to explore. Every tool here has production mileage behind it.

AWS EKS IAM VPC CloudWatch GCP GKE Docker Helm Linux RHEL Terraform Ansible Jenkins GitHub Actions CI/CD Pipelines Kubernetes Container Scheduling Prometheus Grafana ELK Stack Alerting Image Scanning Secret Detection AWS Secrets Manager Parameter Store OIDC Python Bash / Shell Groovy JavaScript

Cloud & Containers

IaC & Orchestration

Observability

Security

Languages