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szelese/README.md

Ervin Wallin

Cloud & Platform Engineer
LinkedIn | GitHub

AWS Certified Developer HashiCorp Terraform Associate

v2.1 Full Terraform IaC Latency 44ms NIÜ Award

Cloud Architecture Evolution

From traditional PaaS to modern Serverless IaC
(2025–2026 | BSc Computer Science)

Version Architecture Management Key Achievements Status
v1 Django Monolith + Elastic Beanstalk GitHub Actions + OIDC NIÜ selected project, DORA Elite metrics, <60s deploy, $21k ROI savings Baseline (Archived)
v2 Hexagonal Agnostic + Lambda Container CI/CD Pipeline 63% faster (120ms → 44ms median), OWASP ZAP 0-alert, fully cloud-agnostic core Active Core
v2.1 Same Core + Full Terraform IaC Zero Manual Steps Least-privilege IAM, GitHub App + OIDC, auto Secrets sync, smart smoke test, CloudWatch + SNS Advanced Portfolio Project

The full story: Started with classic PaaS in v1, evolved to fully cloud-agnostic serverless in v2, then fully automated with Terraform in v2.1 — consistently delivering performance, security and reproducibility.

Highlighted Projects

CI/CD with Elastic Beanstalk (NIÜ Award)
github.com/szelese/ci-cd-gha-aws
OIDC-secured pipeline, quality gates, auto-deploy + post-deploy hooks.

Agnostic Serverless Lambda Core
github.com/szelese/v2-agnostic-lambda-core
Hexagonal design, Dockerized Lambda, 44ms latency (Locust validated), hardened security headers.

Full Terraform IaC Layer
github.com/szelese/v2.1-agnostic-lambda-core-terraform
Zero-duplication architecture, least-privilege IAM, automatic GitHub Secrets sync, zero manual deployment.

Core Competencies

Cloud & Infrastructure
• AWS (Lambda, API Gateway, ECR, IAM, CloudWatch, Elastic Beanstalk)
• Terraform IaC (least-privilege, modules, remote state ready)

DevOps & Automation
• GitHub Actions + OIDC, CI/CD pipelines, Docker
• Smart smoke testing & automated rollback readiness

Security & Quality
• OWASP ZAP 0-alert, hardened security headers, GitHub App auth
• Locust load testing, pytest, flake8, bandit

Architecture
• Hexagonal / Cloud-Agnostic design, Serverless, Event-driven systems

Certifications
• AWS Certified Developer – Associate (2026)
• HashiCorp Terraform Associate (004) (2026)
• AWS Certified Cloud Practitioner (2025)
• CKAD – planned Q2 2026

Next Level (v3 Roadmap)

  • Multi-environment infrastructure with Terraform modules
  • Remote state backend (S3 + DynamoDB)
  • Blue-Green / Canary deployments
  • Automated DORA metrics
  • Hardened Security Module
  • Production-ready environment

Open to new opportunities in Sweden & EU & worldwide Cloud • Platform • DevOps • Serverless Engineer roles

📩 ervin.wallin at gmail dot com | Let's build scalable, secure and fully reproducible cloud systems together!

20 years in high-stakes logistics → reliability-first approach to cloud infrastructure.

Profile views
© 2026 Ervin Wallin

Pinned Loading

  1. ci-cd-gha-aws ci-cd-gha-aws Public

    CI/CD pipeline with GitHub Actions + AWS Elastic Beanstalk. OIDC keyless auth, DORA Elite metrics. Hungarian National Innovation Agency selected thesis project.

    Python

  2. v2-agnostic-lambda-core v2-agnostic-lambda-core Public

    Cloud-agnostic serverless core on AWS Lambda. Hexagonal design, 44ms latency, OWASP ZAP 0-alert, Dockerized.

    Python

  3. v2.1-agnostic-lambda-core-terraform v2.1-agnostic-lambda-core-terraform Public

    Full Terraform IaC layer for v2 Lambda core. Zero manual steps, least-privilege IAM, GitHub Secrets auto-sync.

    HCL