Miguel Callejas

Software Architect · Senior DevOps Engineer

Experienced Software Architect and CloudOps Director with 10+ years in global SaaS operations, specializing in cloud infrastructure, CI/CD, automation, and security. Skilled in Kubernetes, Terraform, Python, and cloud platforms (AWS, GCP, Azure). Hands-on with secrets management (HashiCorp Vault, AWS Secrets Manager, GCP Secret Manager) and IAM hardening across cloud providers and self-hosted solutions (Keycloak). Proven track record in team leadership (20+ engineers), process optimization, cost reduction, and security/compliance initiatives (ISO 27001, SOC). Seasoned data analyst with deep BigQuery experience across ETLs, DataFlow pipelines, and streaming data architectures.

Core Skills

Cloud & Infrastructure

Kubernetes · Docker · Terraform · Terragrunt · ArgoCD · Helm · AWS · GCP · Azure · Grafana · Prometheus · OpenTelemetry · Kafka · RabbitMQ · ElasticSearch · MongoDB · Redis · PostgreSQL · Vertex AI · HashiCorp Vault · AWS Secrets Manager · GCP Secret Manager · Keycloak · IAM Hardening

Data and AI Platforms

BigQuery · Snowflake · Databricks · Vertex AI · OpenAI API · Google Dataflow · AWS Athena · AWS Glue · Pinecone · Weaviate · Chroma

Frameworks

Flask · FastAPI · LangChain · TensorFlow · PyTorch · Hugging Face Transformers · Express · React · NestJS

Languages

Python · JavaScript · Java · C# (.NET Core) · Bash

Experience

Seagull Sofware · CloudOps Director

Oct 2024 – Present · WA, United States

Lead a team of 20+ engineers across Cloud Operations and DevOps, driving architecture, deployment, and maintenance of globally distributed SaaS platforms. Manage 2 cloud platforms (AWS, GCP), 3 on-prem platforms, and over 400 cores / 4TB memory worth of infrastructure. Oversee reliability, scalability, and availability across multiple regions, with strong emphasis on CI/CD automation, performance optimization, and operational cost efficiency.

  • Manage 20+ engineers across CloudOps and DevOps teams with full budget ownership
  • Operate 400+ cores, 4TB memory across 2 cloud and 3 on-prem platforms
  • Architected and maintained global SaaS infrastructure ensuring uptime and performance
  • Implemented secrets management (Vault, AWS Secrets Manager) and IAM hardening (Keycloak, cloud-native IAM)
  • Implemented CI/CD pipelines and automation for scalable multi-tenant systems
  • Optimized cloud cost efficiency and operational processes across AWS and GCP

Mojix · Software Architect

Jul 2016 – Oct 2024 · FL, United States

Designed and integrated enterprise information systems while supervising development teams and defining architectural strategy. Focused on improving scalability, data flow, and API integration across the company’s products.

  • Led architectural design and integration for enterprise-grade systems
  • Advised technical teams on emerging technologies and infrastructure improvements
  • Assessed business impact of architectural decisions across multiple product lines

CTE Partner Cisco · Networking Instructor

Jan 2015 – Jun 2016 · La Paz, Bolivia

Delivered professional instruction for Cisco certification courses including CCNA and CCNP Routing & Switching.

ITC Group · Senior Networking Engineer

Feb 2013 – Jun 2016 · La Paz, Bolivia

Designed collaboration and data center networks with emphasis on IP telephony, unified messaging, and virtualization. Developed scalable architectures including spine-leaf and FabricPath.

Entel · Data Mining

Nov 2012 – Jan 2013 · La Paz, Bolivia

Performed database filtering, business intelligence analysis, and software development for data management and KPI tracking.

University of Delaware · Researcher at Electrical and Computer Engineering Department

Jun 2012 – Aug 2012 · DE, United States

Conducted research in information retrieval and data mining using Lemur and Indri frameworks to improve search and indexing algorithms for medical databases.

Soltux · Software Developer

Jun 2011 – Jun 2012 · La Paz, Bolivia

Developed NCL applications for digital television middleware, virtualized STB environments, and educational content for the Bolivian digital TV rollout.

Spread Group · Technical Support

Mar 2012 – May 2012 · San Antonio, TX, United States

Supported web server deployments and security audits for Joomla-based systems, including PHP scripting and virtualization troubleshooting.

Credentials

AWS Solutions Architect Associate

Amazon Web Services

Google Cloud Professional Cloud Architect

Google

GS1 Standards Professional

GS1 US

Certified Kubernetes Application Developer

The Linux Foundation

Education

Universidad Católica Boliviana

Masters in Telematics and Telecommunications · 2012 – 2014

Univeristy of Delaware

Researcher at Electrical and Computer Engineering · 2011 – 2012

Universidad Católica Boliviana

Bachelor's in Telecommunications Engineering · 2008 – 2011

Languages

  • Spanish — Native
  • English — Fluent