Available to hire
I’m Tijmen Verbeek, a Senior Full Stack Engineer with over a decade building cloud-native applications for healthcare, mobility, and enterprise platforms. I specialize in Python (Django, FastAPI, Flask), Go, Node.js, and React, with experience across Angular and Vue as well as modern CI/CD and DevOps practices.
I focus on resilient distributed architectures, AI integrations, and cloud deployments on AWS and Kubernetes, while collaborating with cross-functional teams to drive measurable outcomes. I also enjoy mentoring peers and exploring blockchain and mobile-capable solutions for secure payments and identity use cases.
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Language
English
Fluent
Work Experience
Senior Full Stack Engineer at Dotsquares
August 1, 2021 - PresentLed the architecture and development of a multi-tenant SaaS invoicing and workflow automation platform using Python (FastAPI), React, PostgreSQL, and Redis. Implemented event-driven microservices with Kafka and Docker/Kubernetes on AWS EKS to ensure high availability for enterprise clients. Introduced AI-driven document classification and NLP search via OpenAI API and Elasticsearch, reducing manual data entry by ~40%. Migrated legacy AngularJS frontends to React with TypeScript, improving maintainability and reducing UI defects by 22%. Established infrastructure as code with Terraform, and integrated Ethereum-based audit trails (Web3.js) for data integrity. Spearheaded CI/CD pipelines (GitHub Actions, Jenkins) and optimized services for performance under load, achieving ~32% faster response times. Collaborated with mobile teams to expose secure REST/GraphQL APIs for hybrid apps and mentored four junior engineers.
Full Stack Engineer at CarePay
July 1, 2021 - October 9, 2025Built and scaled digital healthcare wallet APIs using Python (Django REST Framework), Go microservices, PostgreSQL, and Redis, handling 5M+ transactions monthly. Developed a React web portal for clinics/insurers enabling real-time claims processing and fraud reduction of ~30%. Deployed to AWS with automated scaling; integrated AI anomaly detection (scikit-learn + Airflow) to reduce false claims by ~25%. Implemented Node.js WebSocket gateways for real-time payment notifications and established end-to-end testing frameworks (Cypress, PyTest) to ensure regulatory compliance. Led API exposure for mobile apps (OAuth2, JWT) and modernized architecture from monolith to microservices to improve scalability. Implemented CI/CD via GitLab CI and Docker.
Backend Developer at Etergo
April 1, 2017 - October 9, 2025Developed Python backends (Flask, Django) powering IoT connectivity for smart scooters, including telemetry and GPS. Built real-time vehicle health dashboards with React + WebSockets. Designed Go microservices for routing optimization and fleet monitoring deployed on Kubernetes on GCP. Prototyped blockchain-based vehicle identity systems; APIs for OTA firmware updates. Set up data pipelines with Kafka + Spark processing millions of IoT events daily. Built predictive ML models for battery health forecasting; implemented Jenkins CI/CD and performed load testing with Locust for fleet scaling up to 100K. Created developer tooling and SDKs for mobile teams integrating scooter APIs.
Senior Full Stack Engineer at Dotsquares
August 1, 2021 - PresentLed architecture and development of a multi-tenant SaaS invoicing and workflow automation platform using Python (FastAPI), React, PostgreSQL, and Redis, improving customer onboarding time by 35%. Designed and deployed event-driven microservices with Kafka and Docker/Kubernetes on AWS EKS, enabling high availability and fault tolerance for enterprise clients. Implemented AI-driven document classification and NLP search features using OpenAI API + Elasticsearch, reducing manual data entry for clients by ~40%. Migrated legacy AngularJS frontends to React with TypeScript, improving maintainability and reducing UI defect rates by 22%. Introduced infrastructure-as-code with Terraform, automating cloud deployments and ensuring compliance across dev/staging/prod environments. Integrated blockchain-based audit trails (Ethereum smart contracts + Web3.js) into compliance modules, ensuring data integrity and verifiable records. Spearheaded CI/CD pipelines (GitHub Actions, Jenkins), reducing deploy
Full Stack Engineer at CarePay
July 1, 2021 - October 9, 2025Built and scaled digital healthcare wallet APIs using Python (Django REST Framework), Go microservices, PostgreSQL, and Redis, handling 5M+ transactions monthly. Engineered React web portal for clinics/insurers with real-time claims processing, reducing fraud incidents by 30%. Deployed applications to AWS (Lambda, S3, RDS, CloudFront) with automated scaling. Integrated AI anomaly detection models for fraud detection, reducing false claims by 25%. Implemented Node.js + WebSocket gateways for real-time payment notifications, improving user experience. Introduced end-to-end testing frameworks (Cypress, PyTest) to ensure compliance with healthcare data regulations. Collaborated on mobile health wallet apps by exposing APIs for Android/iOS apps, ensuring secure patient identity verification with OAuth2 and JWT. Optimized query performance with PostgreSQL indexing and ElasticSearch, cutting average claim search latency from 2s to 300ms. Deployed CI/CD pipelines using GitLab CI and Docker, re
Backend Developer at Etergo
April 1, 2017 - October 9, 2025Developed backend services in Python (Flask, Django) powering IoT connectivity features for smart scooters, including telemetry, GPS tracking, and predictive maintenance. Built real-time vehicle health dashboards with React + WebSockets, enabling proactive service interventions and reducing breakdowns by 20%. Designed Go microservices for routing optimization and fleet monitoring, deployed on Kubernetes clusters in GCP. Integrated blockchain-based vehicle identity prototypes to secure ownership and service logs. Collaborated with hardware engineers to develop APIs for scooter firmware updates via OTA deployments. Designed and deployed data pipelines with Kafka + Spark, processing millions of IoT events per day for analytics. Built predictive ML models for battery health forecasting using Python, reducing unexpected failures. Set up CI/CD pipelines with Jenkins, cutting release time from days to hours. Conducted performance testing with Locust to simulate fleet scaling up to 100K scoote
Senior Full Stack Engineer at Dotsquares
August 1, 2021 - PresentLed the architecture and development of a multi-tenant SaaS invoicing and workflow automation platform using Python (FastAPI), React, PostgreSQL, and Redis, improving customer onboarding time by 35%. Designed and deployed event-driven microservices with Kafka and Docker/Kubernetes on AWS EKS, enabling high availability and fault tolerance for enterprise clients. Implemented AI-driven document classification and NLP search features using OpenAI API + ElasticSearch, reducing manual data entry for clients by ~40%. Migrated legacy AngularJS frontends to React with TypeScript, improving maintainability and cutting UI defect rates by 22%. Introduced infrastructure-as-code with Terraform, automating cloud deployments and ensuring compliance across dev/staging/prod environments. Integrated blockchain-based audit trails (Ethereum smart contracts + Web3.js) into compliance modules, ensuring data integrity and verifiable records. Spearheaded CI/CD pipelines (GitHub Actions, Jenkins), reducing dep
Full Stack Engineer at CarePay
July 1, 2021 - October 24, 2025Built and scaled digital healthcare wallet APIs using Python (Django REST Framework), Go microservices, PostgreSQL, and Redis, handling 5M+ transactions monthly. Engineered React web portal for clinics/insurers, enabling real-time claims processing and reducing fraud incidents by 30%. Deployed applications to AWS (Lambda, S3, RDS, CloudFront) with automated scaling strategies to handle variable healthcare transaction spikes. Integrated AI anomaly detection models (Python scikit-learn + Airflow pipelines) for fraud detection, reducing false claims by 25%. Implemented Node.js + WebSocket gateways for real-time payment notifications, improving user experience. Introduced end-to-end testing frameworks (Cypress, PyTest) to ensure compliance with healthcare data regulations. Collaborated on exposing APIs for Android/iOS apps with OAuth2 and JWT for secure patient identity verification. Optimized query performance with PostgreSQL indexing and ElasticSearch, cutting average claim search latenc
Backend Developer at Etergo
April 1, 2017 - October 24, 2025Developed backend services in Python (Flask, Django) powering IoT connectivity features for smart scooters, including telemetry, GPS tracking, and predictive maintenance. Built real-time vehicle health dashboards with React + WebSockets, enabling proactive service interventions and reducing breakdowns by 20%. Designed microservices in Go for routing optimization and fleet monitoring, deployed on Kubernetes clusters in GCP. Integrated blockchain-based vehicle identity prototypes to secure ownership and service logs. Coordinated with hardware engineers on OTA firmware updates via over-the-air deployments. Built data pipelines with Kafka + Spark processing millions of IoT events daily for analytics. Developed predictive ML models for battery health forecasting, reducing unexpected failures. Implemented CI/CD pipelines with Jenkins, cutting release time from days to hours. Conducted performance testing with Locust for fleet scale up to 100K scooters. Created developer tooling and SDKs for
Senior Full Stack Engineer at Dotsquares
August 1, 2021 - November 16, 2025Led the architecture and development of a multi-tenant SaaS invoicing and workflow automation platform using Python (FastAPI), React, PostgreSQL, and Redis, improving customer onboarding time by 35%. Designed and deployed event-driven microservices with Kafka and Docker/Kubernetes on AWS EKS to enable high availability and fault tolerance for enterprise clients. Implemented AI-driven document classification and NLP search features using OpenAI API + Elasticsearch, reducing manual data entry for clients by ~40%. Migrated legacy AngularJS frontends to React with TypeScript, improving maintainability and cutting UI defect rates by ~22%. Introduced infrastructure-as-code with Terraform, automating cloud deployments and ensuring compliance across dev/staging/prod. Integrated blockchain-based audit trails (Ethereum smart contracts + Web3.js) into compliance modules, ensuring data integrity and verifiable records. Spearheaded CI/CD pipelines (GitHub Actions, Jenkins), reducing deployment cycl
Full Stack Engineer at CarePay
July 1, 2021 - July 1, 2021Built and scaled digital healthcare wallet APIs using Python (Django REST Framework), Go microservices, PostgreSQL, and Redis, handling 5M+ transactions monthly. Engineered React web portal for clinics/insurers, enabling real-time claims processing and reducing fraud incidents by 30%. Deployed applications to AWS (Lambda, S3, RDS, CloudFront) with automated scaling strategies to handle variable healthcare transaction spikes. Integrated AI anomaly detection models (scikit-learn + Airflow pipelines) for fraud detection, reducing false claims by 25%. Implemented Node.js + WebSocket gateways for real-time payment notifications, improving user experience. Introduced end-to-end testing frameworks (Cypress, PyTest) to ensure compliance with healthcare data regulations. Collaborated on mobile health wallet apps by exposing APIs for Android/iOS apps, ensuring secure patient identity verification with OAuth2 and JWT. Optimized query performance with PostgreSQL indexing and Elasticsearch, cutting
Backend Developer at Etergo
April 1, 2017 - April 1, 2017Developed backend services in Python (Flask, Django) powering IoT connectivity features for smart scooters, including telemetry, GPS tracking, and predictive maintenance. Built real-time vehicle health dashboards with React + WebSockets, enabling proactive service interventions and reducing breakdowns by 20%. Designed Go microservices for routing optimization and fleet monitoring, deployed on Kubernetes clusters in GCP. Integrated blockchain-based vehicle identity prototypes to secure ownership and service logs. Collaborated with hardware engineers to develop APIs for scooter firmware updates via OTA deployments. Designed and deployed data pipelines with Kafka + Spark, processing millions of IoT events per day for analytics. Built predictive ML models for battery health forecasting using Python, reducing unexpected failures. Set up CI/CD pipelines with Jenkins, cutting release time from days to hours. Conducted performance testing with Locust to simulate fleet scaling up to 100K scoote
Education
Bachelor's Degree in Computer Science at Free University of Amsterdam
September 1, 2011 - July 1, 2014Bachelor's Degree at Free University of Amsterdam
September 1, 2011 - July 1, 2014Bachelor’s Degree in Computer Science at Free University of Amsterdam
September 1, 2011 - July 1, 2014Bachelor's Degree in Computer Science at Free University of Amsterdam
September 1, 2011 - July 1, 2014Qualifications
Industry Experience
Healthcare, Software & Internet, Professional Services, Financial Services, Transportation & Logistics, Computers & Electronics
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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