Master in Computer Science — Artificial Intelligence
2009 – 2011
Clerton Araujo
senior full stack engineer · berlin, germany
SUMMARY
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Senior Full Stack Software Engineer with 10+ years building mission-critical platforms across healthcare, fintech, and e-government. Currently at Doctolib (Berlin) leading integration with Germany's national telematic healthcare infrastructure (TI) for 90M+ patients across 300,000+ healthcare providers. Holds a Master's in Computer Science (AI specialisation). Specialises in TypeScript/React, Ruby on Rails, Java/Spring, and AWS/Azure. Fluent English; German B1.
TECHNICAL SKILLS
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Frontend
TypeScript · JavaScript · React · React Native · Redux · CSS · Design Systems
Backend
Ruby on Rails · Java · Spring Boot · Node.js · .NET Core · Python · Elixir · Scala · OCaml · COBOL
Cloud & DevOps
AWS · Azure · Docker · Kubernetes · CI/CD · Datadog · Sentry
Databases
PostgreSQL · MongoDB · Microsoft SQL Server · Couchbase
Practices
System Design · Microservices · GDPR · eHealth compliance (§75b SGB V) · TDD · Agile/Scrum
EXPERIENCE
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Doctolib
Oct 2021 → Present
Senior Full Stack Software Engineer · Berlin
- Architected GDPR and §75b SGB V–compliant security protocols for Germany's national telematic infrastructure (TI), serving 90M+ patients across 300,000+ healthcare providers.
- Decomposed legacy monolithic Rails application into independently-deployable microservices, reducing release risk and increasing deployment frequency.
- Led cross-functional technical scoping for 5+ product squads, translating healthcare regulatory requirements into actionable engineering roadmaps.
- Drove observability adoption (Datadog/Sentry), cutting mean time-to-detect (MTTD) for production incidents.
stack → TypeScript · React · Ruby on Rails · PostgreSQL · Java · Spring · Docker · AWS · Datadog · Sentry
Issuu
Dec 2020 → Sep 2021
Full Stack Developer · Berlin
- Optimised user engagement and revenue in collaboration with marketing and product teams.
- Built and standardised internal Design System, improving UI consistency and development efficiency across multiple squads.
- Integrated headless CMS, enhancing content management flexibility and reducing time-to-publish.
stack → TypeScript · React · Node.js · Python · Elixir · OCaml · PostgreSQL · Docker · AWS
LQ Enterprise
Jul 2018 → Dec 2020
Senior Software Engineer · Berlin
- Delivered secure e-government solutions for the German public sector, meeting strict data protection requirements.
- Designed and launched an award-winning product, contributing to significant company growth.
- Developed a multilingual platform supporting Farsi, Arabic, German, and English, expanding user accessibility to underserved communities.
stack → TypeScript · React · .NET Core · PostgreSQL · Azure
Softplan
May 2017 → Jun 2018
Software Engineer · Florianópolis
- Developed mobile traffic ticketing system for the Brazilian Federal Police, deployed to officers nationwide.
- Built a public service portal for Florianópolis City Hall, improving citizen access to municipal services.
- Created an attorney scheduling system for the Brazilian Government, streamlining legal service allocation.
stack → React · React Native · Java · Scala · Node.js · Spring · MSSQL · Couchbase · Docker
Bradesco Bank
Nov 2016 → Apr 2017
Lead Software Developer · Curitiba
- Launched Brazil's first online insurance marketplace, opening a new revenue channel for one of Brazil's largest banks.
- Led development of geotracking app delivering real-time personalised offers to customers.
stack → Java · Spring · IBM WebSphere · MongoDB · Android · Swift
HSBC
Mar 2013 → Oct 2016
Senior Software Developer · Curitiba
- Maintained public web applications for HSBC Brazil handling 140M+ annual visits, achieving high availability through performance optimisation and redundancy.
- Implemented global online authentication strategy securing millions of HSBC Brazil online banking accounts.
- Integrated Java/Spring services with legacy COBOL mainframe systems, enabling modernisation without downtime.
stack → Java · Spring · IBM WebSphere · COBOL mainframe integration
EDUCATION
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Federal University of Pernambuco · Recife, Brazil
Research: Semi-supervised algorithms for cancer gene expression sub-class discovery.
Bachelor in Computer Science
2004 – 2009
Federal University of Campina Grande · Campina Grande, Brazil
PUBLICATIONS
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Semi-supervised Approach for Finding Cancer Sub-classes on Gene Expression Data
LANGUAGES
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English
Fluent — professional
Portuguese
Native
German
B1 — Certified DTZ 2020
CERTIFICATIONS & AWARDS
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Certified Scrum Product Owner
2015
HSBC Team Awards
2015, 2016
Deutsch-Test für Zuwanderer (DTZ) — B1
2020
CONTACT
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Clerton Araujo
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clertonfilho@gmail.com
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linkedin.com/in/clerton
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github.com/clertonraf
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Berlin, Germany