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einnar82/README.md

Hi, I'm Rannie

Hands-on Head of Engineering | DevSecOps | Software Architect | Platform, Data & Secure Delivery

I lead engineering teams and build systems in regulated financial services—combining technical leadership, software architecture, and hands-on implementation when needed. My work focuses on platform reliability, secure delivery, and scalable data systems that support mission-critical operations.

I’ve led teams of up to 9 engineers across 16 active projects, helping deliver platforms that process 566M+ records and 1.4TB+ of data monthly.


What I Do

I operate at multiple levels—from engineering strategy and delivery governance to architecture, coding, and production reliability. I work in high-stakes, compliance-driven environments where systems must be scalable, observable, secure, and audit-ready.

Leadership & Engineering Execution

  • Hands-on Head of Engineering in a regulated financial services environment
  • Led teams of up to 9 developers across 16 active projects
  • Drive technical strategy, architecture decisions, and execution quality
  • Stay involved in implementation when needed (architecture, debugging, high-impact technical work)
  • Build engineering discipline through delivery standards, CI/CD practices, and cross-functional coordination
  • Use structured leadership operating cadences (including EOS Level 10 / L10-style accountability and issue-solving)

Core Expertise

Engineering Leadership, Architecture & Platform Reliability

  • Engineering leadership in regulated / compliance-heavy environments
  • Software architecture for enterprise systems and data platforms
  • Platform reliability, operational resilience, and production readiness
  • Technical decision-making, system design, and architecture governance
  • Delivery governance, release controls, and cross-functional execution

DevOps / DevSecOps / Secure Delivery

  • CI/CD pipeline design and release automation (GitLab CI/CD, GitHub Actions)
  • DevSecOps practices: security scanning, code scanning, dependency/vulnerability checks
  • Observability and monitoring (CloudWatch, Datadog, Grafana, Sentry)
  • Secure deployment controls and release governance
  • Audit readiness: control evidence preparation, remediation tracking, and delivery process alignment for external audits

Data Platform & ETL Engineering

  • Medallion architecture (bronze / silver / gold) and modern data lake design
  • Large-scale ETL pipelines with audit trails, validation frameworks, and SCD Type 2 tracking
  • Golang ETL pipelines (including parquet-go for Parquet writing) and Python-based data workflows
  • High-volume querying / validation / transformation using DuckDB, Polars, Pandas, and PySpark
  • Data quality controls, reconciliation, and error handling at scale
  • Air-gapped and regulated deployment environments

Software Engineering & System Integration (Hands-on)

  • Backend/API development: PHP, Python, Node.js, TypeScript, Go
  • Frameworks: Laravel, Express, Fastify, NestJS, Gin
  • Enterprise integrations: payment gateways, ERP/accounting platforms, third-party APIs
  • Multi-tenant and compliance-driven application design
  • API orchestration, webhooks, and system interoperability

Technology Stack

Cloud & Platform: AWS, GCP, Alibaba Cloud, DigitalOcean, Vercel
DevOps / SRE: Docker, Kubernetes, Helm, Nginx, Apache, GitLab CI/CD, GitHub Actions, Bitbucket Pipelines, CloudWatch, Datadog, Grafana, Sentry
DevSecOps / AppSec: SAST, SonarQube, dependency/vulnerability scanning, CI/CD security gates, secure SDLC practices
Data Engineering: Apache Spark, Delta Lake, PySpark, DuckDB, Pandas, Polars, medallion architecture
Languages: Go, Python, PHP, JavaScript, TypeScript, SQL, Solidity
Backend / Frameworks: Laravel, Symfony, Node.js (Express/Fastify/NestJS), Go (Gin)
Databases: PostgreSQL, MySQL, MSSQL, MongoDB, DynamoDB


Recent Technical Highlights

  • Enterprise Data Lake (Medallion Architecture): Architected and delivered a bronze/silver/gold data platform processing 1.4TB+ monthly with audit trails, validation frameworks, and SCD Type 2 tracking
  • Large-Scale ETL Engineering: Built ETL pipelines using Golang (parquet-go) and Python for ingestion, transformation, and data quality validation at scale
  • Data Querying & Validation Workflows: Leveraged DuckDB, Polars, Pandas, and PySpark for efficient querying, validation, transformation, and analytics across large datasets
  • DevOps / DevSecOps Enablement: Implemented CI/CD, observability, release governance, and security controls to improve deployment reliability and secure delivery
  • Audit-Ready Engineering Delivery: Ensured engineering audit readiness through evidence preparation, control alignment, and remediation tracking that supported successful external audits

What I’m Interested In

  • Platform engineering and production reliability
  • DevOps / DevSecOps and secure software delivery
  • Large-scale data engineering and data platform architecture
  • Fintech / regulated systems engineering
  • AI-assisted engineering workflows (practical, team-focused use cases)

Let's Connect

I’m always open to discussions around:

  • Engineering leadership (hands-on)
  • Software architecture and platform reliability
  • DevSecOps and audit-ready delivery
  • Data platforms, ETL, and large-scale processing
  • Fintech systems and compliance-driven engineering

Building systems that scale. Leading teams that deliver. Staying hands-on where it matters.

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