Jossemar Cordero

Technical Lead, Generalist and DevOps Advocate

Jossemar Cordero

LanguagesSpanish, EnglishLinkedInlinkedin.com/in/jossemargtEmailjossemargt@gmail.comWebsitejossemargt.com

I enjoy working in the technology industry because it allows me to learn through research, experimentation, and community building. Although I prefer designing solutions, I value the lessons from my engineering management days, particularly that we must prioritize the human aspect before addressing complex problems with bits and bytes.

Work Experience

Senior Lead Engineer

CTO.ai Jun. 2022 - Currently

  • Established communication and process guidelines for the engineering team, which improved collaboration performance and culture, allowing us to overcome blockers from the 2022 initiatives.
  • Directed architectural decisions for a polyglot system in Go, JavaScript, Rust, and Java, enhancing reliability and reducing complexity, ensuring robust and scalable solutions.
  • Led the research and development efforts to enhance the product with cloud-native technologies. This included:
    • Migrating a part of the core platform as standalone Kubernetes operators written in Go, enhancing core platform portability and enabling customer independence.
    • Developing proof of concepts, such as using ephemeral buildkit services with modified open-source clients, showcasing efficiency improvements, and highlighting technology investment needs.
  • Enhanced platform reliability by upgrading Kubernetes clusters from v1.19 to v1.26 and maintaining other critical infrastructure components. This reduced the cloud costs by 30% through compliance and resource optimization.
  • Facilitated the partnership with a third-party cloud provider by extending Keycloak to support Single Sign-On, which enhanced user adoption through a seamless sign-up process.

DevOps Techlead

3Pillar Global / SUSE Dec. 2021 - May 2022

  • Improved RKE2 release time by collaborating in the documentation and automation of the existing cross-team processes through a single Go written binary.
  • Enhanced QA test reliability by improving drone CI pipelines and tools to generate snapshot RPMs with RKE2 binaries per revision commit.
  • Streamlined 3Pillar consultant onboarding by documenting and breaking down concepts while training them on core products, team processes, and release procedures.

Engineering Manager - MTS2

PayPal Sep. 2020 - Nov. 2021

  • Aligned Xoom’s CI practices with PayPal’s standards through portable and reproducible pipelines, and supported 200+ engineers daily, fostering a unified workflow across business units.
  • Reduced operational costs and aligned infrastructure teams with the company strategy by defining and implementing infrastructure as code standards, enabling a seamless GCP migration and unified workflow.
  • Saved developer and quality assurance engineers hours by automating the orchestration process for QA environment setup and application provisioning.

Tooling Engineer - MTS1

Xoom, a Paypal Service Mar. 2015 - Sep. 2020

  • Reduced time to production for new applications from two months to five minutes by enhancing CI and deployment processes, leveraging codebase insights and developer-provided metadata.
  • Developed a unified provisioning method for static and dynamic application configurations using a single Go binary, now standard across 200+ production applications and new projects.
  • Researched and prototyped unified software development methods, leading my team to standardize application and infrastructure-as-code development using CI pipelines, templates, guidelines, tools, and emerging technologies.

Co-Founder

Self-funded startup Jan. 2014 - Dec. 2014

  • We found that small businesses struggle with complex and costly website creation. To address this, we developed an easy solution that lets them build websites by answering questions and providing their Facebook page URL.
  • We developed a proof of concept using a WordPress multisite with premium themes and custom-built plugins, then validated by presenting our idea to peers and small businesses through door-to-door visits.
  • Developed the business idea MVP with Node.js and a basic Angular SPA, successfully attracting several freemium users.

Full Stack and Hybrid Mobile Developer

Freelance Dec. 2010 - Mar. 2015

  • As a consultant, led development teams in designing and establishing foundational code for multiple custom platforms, including a trading firm’s back office and a CRM built from scratch.
  • Developed multiple WordPress themes and hybrid mobile applications, tailored to meet specific demands from local referrals and freelancing gigs, improving customers’ online presence and helping them bootstrap several business ideas.

Skills

  • Certified Kubernetes Adminitrator, Certified Scrum Product Owner
  • JavaScript, Go, Python, Java, Groovy, POSIX shell (bash), PHP, Ruby, Python, Rust
  • Kubernetes, K3s, kubebuilder, pepr, kopf, kube-rs, Operator SDK, helm, Istio, Karpenter, Keycloak
  • AWS, EKS, EC2, S3, IAM, RDS, OpenSearch, ElastiCache CloudFormation, CDK
  • CDK8s, Puppet, Ansible, Packer, Terraform, Vagrant, Serverless Framework
  • git, gradle, maven, make, rake, cargo, Jenkins, drone.io, GitHub Actions
  • buildkit, containerd, Docker, crane, Harbor, Nginx, systemd, rpm packaging
  • node.js, TypeScript, Angular, Ionic, next.js, less CSS, sass, rspect, beaker, servespec, karma, jest, spock, junit
  • MongoDB, MariaDB, PostgreSQL, etcd, Zookeeper, Redis

Education

Bachelor in Software Engineering and Computer Science Universidad de San Carlos de Guatemala

November 2013 / Curriculum Completed

Interests and Activities