freiberufler Experienced Freelance DevOps Engineer, Site Reliability Engineer, Cloud and On-premise Specialist auf freelance.de

Experienced Freelance DevOps Engineer, Site Reliability Engineer, Cloud and On-premise Specialist

zuletzt online vor wenigen Tagen
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  • 10245 Friedrichshain-Kreuzberg
  • Weltweit
  • pt  |  en  |  de
  • 11.03.2024

Kurzvorstellung

Accomplished engineer with over 17 years of expertise across various programming languages, methodologies, and platforms, with a focus on developing high-performance systems, microservices, and distributed systems.

Qualifikationen

  • Cloud Computing
  • DevOps (allg.)
  • Go (GoLang)
  • IaaS (Infrastructure as a Service)
  • Kontinuierliche Integration (CI)
  • Linux Entwicklung
  • PaaS (Platform as a Service)
  • Software engineering / -technik
  • System Architektur
  • Systemadministration (allg.)

Projekt‐ & Berufserfahrung

Senior Platform Engineer
German Edge Cloud, Berlin
10/2021 – 6/2023 (1 Jahr, 9 Monate)
IT & Entwicklung
Tätigkeitszeitraum

10/2021 – 6/2023

Tätigkeitsbeschreibung

- Developed and managed a GitOps Kubernetes platform, using Argo CD, VMWare Tanzu, and VMWare Carvel (imgpkg, ytt, vendir, kbld). Serving large industrial customers.

- Developed several Kubernetes Operators in Go. Operators were used for infrastructure and in-cluster provisioning, enhancing developer and customer experience by optimizing infrastructure provisioning.

- Developed, tested and maintained Helm charts for dozens of different technologies, including: Kafka, cert-manager, ArgoCD, Postgres-Operator, Prometheus, Redis-Operator, MariaDB-Operator, Thanos, and many more.

- Developed and maintained observability systems using Prometheus, ELK, Grafana, Loki, and the OpenTelemetry framework.

- Developed, managed and improved ArgoCD and GitLab CI pipelines.

- Refactored core Kubernetes architecture to enable a modern platform approach to deploying apps and components.

Eingesetzte Qualifikationen

DevOps, Kontinuierliche Integration (CI), Linux Entwicklung, Python, Cloud Computing, Go (GoLang), PaaS (Platform as a Service)

Senior DevOps Engineer
Volkswagen AG, Berlin
12/2018 – 7/2022 (3 Jahre, 8 Monate)
Automobilindustrie
Tätigkeitszeitraum

12/2018 – 7/2022

Tätigkeitsbeschreibung

- Designed and developed a large Kubernetes infrastructure, encompassing dozens of Kubernetes clusters running across different regions and environments, both in AWS and Azure. The total amount of nodes fluctuated between 500-1000 Kubernetes nodes (auto-scaled).

- Provided SRE services to the whole infrastructure. Including defining SLIs, SLOs, and performing on-duty calls.

- Supported various development teams, and scaled the platform to 200+ car technology applications, communicating with more than 3 million vehicles, receiving thousands of requests per second.

- Led and took ownership of every single component of the architecture, debugging, testing, mitigating issues, and preventing potential problems.

- Designed and developed AWS and Azure cloud infrastructure, using Terraform, AWS CDK, AWS Codebuild, and more.

- Built, maintained and deployed dozens of Helm charts, for all kinds of core Kubernetes components.

- Ensured compliance and high security standards using various tools, including kube-bench, KubeSec, Aqua Security and SonarQube.

- Developed and implemented CI/CD pipelines, running in Concourse CI, and created GitOps workflows using Flux.

- Designed and implemented an observability stack, using Prometheus, Grafana, ELK and more.

- Designed, developed and tested system tools written in Go.

Eingesetzte Qualifikationen

Continuous Delivery (CDE), Linux Entwicklung, Python, Cloud Computing, Microsoft Azure, Amazon Web Services (AWS), Go (GoLang), Kubernetes, DevOps

Senior DevOps Engineer / SRE (Festanstellung)
SAP Signavio, Berlin
4/2016 – 7/2018 (2 Jahre, 4 Monate)
IT & Entwicklung
Tätigkeitszeitraum

4/2016 – 7/2018

Tätigkeitsbeschreibung

- Became a key person in the small infrastructure team and directly contributed to the business growth, as the company onboarded thousands of clients at a fast pace. Increasing the infrastructure demand. The business efficiency and growth resulted in a successful acquisition by SAP for 1 billion euros.

- Introduced, developed and operated all Kubernetes clusters of the company, running on top of AWS and Azure across several regions of the globe, including North America, Europe and Asia. 500+ Kubernetes nodes, deployed using Kops, Terraform and self-managed solutions.

- Maintained and performed SRE work on all aspects of the infrastructure, including cloud infrastructure and on-premise datacenter, Databases, Networking, message systems and so on. Including defining SLIs, SLOs, and performing on-duty calls.

Eingesetzte Qualifikationen

Continuous Delivery (CDE), DevOps, Kontinuierliche Integration (CI), Python, Microsoft Azure, Amazon Web Services (AWS), Go (GoLang), Kubernetes

Infrastructure Specialist (Festanstellung)
Locaweb, Sao Paulo
7/2013 – 5/2015 (1 Jahr, 11 Monate)
IT & Entwicklung
Tätigkeitszeitraum

7/2013 – 5/2015

Tätigkeitsbeschreibung

- Developed a storage management system from scratch using Ruby, Perl and C, built on top of storage technology from F5, EMC and Avere. The storage management solution was utilized for system analysis and provisioning of storage services across a network of 1000+ storage machines running OpenSolaris (with ZFS) and more than 9 petabytes of data. Serving and empowering the entire data center.

- Participated in the re-design and implementation of a new storage architecture that reduced costs by more than 35%.

- Developed a metrics monitoring system, using Python, Haskell and C. The system was used to monitor a large data center, housing 20.000+ machines, running Linux, Windows and proprietary systems.

- Designed, built and implemented OpenStack and VMWare infrastructure at scale.

- Developed in-house container-based solutions for Web Hosting, using Docker and Go.

- Developed a solution to monitor and limit customer resources in the shared hosting platform, using cgroups.

- Provided general assistance in areas such as systems administration, SRE and infrastructure development.

Eingesetzte Qualifikationen

Big Data, Cloud Computing, Continuous Delivery (CDE), DevOps, Go (GoLang), IaaS (Infrastructure as a Service), Kontinuierliche Integration (CI), Linux Entwicklung, PaaS (Platform as a Service), Python, Storage

Ausbildung

Technical Studies in Informatics
Ausbildung
SESI / SENAI
2007

Über mich

I excel in crafting innovative solutions for large-scale challenges, significantly improving system efficiency and performance.

My career highlights include guiding high-growth startups, data centers, and Fortune 500 companies through strategic improvements, reducing infrastructure complexity and cost while driving value using the latest tech stacks.

I have built projects from scratch to serve millions of users, played a key role in
operations and site reliability to meet escalating performance demands, and led
modernization initiatives, including cloud migrations and legacy system improvements.

Weitere Kenntnisse

- DevOps
- SRE
- Platform Engineering
- MLOps
- High-Growth
- Large-scale Systems
- FinOps
- Cloud Infrastructure
- On-premise Infrastructure
- CI/CD
- Linux
- AWS
- Azure
- GCP
- VMWare

Persönliche Daten

Sprache
  • Portugiesisch (Muttersprache)
  • Englisch (Fließend)
  • Deutsch (Gut)
Reisebereitschaft
Weltweit
Arbeitserlaubnis
  • Europäische Union
  • Schweiz
  • Vereinigte Staaten von Amerika
Home-Office
bevorzugt
Profilaufrufe
2337
Alter
34
Berufserfahrung
17 Jahre und 9 Monate (seit 06/2006)
Projektleitung
4 Jahre

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