You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Jose VadellJV

Jose Vadell

Java, Python & Go Backend Engineer

€300/day
Palma, ES
8-15 years

Average response time: 1 hour

About Jose

Senior Backend Engineer with experience building scalable and reliable systems for high-traffic platforms and international clients. Specialized in backend development using Java, Python, and Go, with strong experience in microservices, distributed systems, cloud infrastructure, and event-driven architectures.

Throughout my career, I have worked on SaaS platforms, booking systems, cloud-native applications, and large-scale backend services, collaborating closely with product, data, and engineering teams.

I have experience designing APIs, building microservices, integrating third-party services, optimizing system performance, and working with technologies such as Spring Boot, Kafka, RabbitMQ, MongoDB, PostgreSQL, Redis, Docker, Kubernetes, and AWS.

I enjoy solving complex technical problems, improving system scalability and reliability, and building clean and maintainable backend solutions.
  • Spanish

    Native or bilingual

  • English

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Playtomic
    Senior Backend Engineer
    DIGITAL AND IT
    April 2025 - Today (1 year and 3 months)
    Backend Lead in a cross-functional team, designing and maintaining systems that power player progression and matchmaking features. Acting as the primary technical reference for backend initiatives, contributing to architectural decisions, mentoring engineers, and collaborating closely with product and data stakeholders.
    Back-End development Java MongoDB Datadog Apache Kafka
  • VirtualCave
    Senior Backend Engineer
    DIGITAL AND IT
    May 2021 - April 2025 (3 years and 11 months)
    Backend Engineer working on scalable systems for major clients such as Barceló Hotels and Inditex. Developed high-performance backend services and microservice architectures using Java and Spring, focusing on reliability, scalability, and real-time communication.

    Contributed to projects involving booking systems, stock distribution, and event-driven platforms, working with technologies such as Kafka, RabbitMQ, MongoDB, PostgreSQL, Redis, and AWS messaging services.

    Key contributions include helping optimize systems handling tens of thousands of requests per minute and contributing to business-critical platforms with direct impact on scalability and conversion rates.
    Java API REST Redis PostgreSQL Spring boot
  • Kinacu Systems SL
    Full Stack Developer
    DIGITAL AND IT
    April 2016 - May 2021 (5 years and 1 month)
    Backend and DevOps Engineer in a SaaS startup, taking ownership of both application development and infrastructure. Designed and maintained APIs, managed cloud environments, automated deployments, and handled containerized services using Docker and Kubernetes.

    Led the transition from a monolithic architecture to microservices and helped establish scalable cloud infrastructure on AWS. Also implemented payment integrations including Stripe, Redsys, and mobile in-app purchases.
    Amazon Web Services Microservices Java Python DevOps

Recommendations

Be the first to recommend Jose

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Bachelor of Applied Data Science
    Universitat Oberta de Catalunya (UOC)
    2026
    Built a strong foundation in data science, machine learning, and data processing using technologies such as Python, Pandas, NumPy, Scikit-Learn, TensorFlow, and R. Worked with relational, NoSQL, and graph databases, as well as data engineering and visualization tools including Spark, Hadoop, Tableau, and ETL pipelines, developing experience in handling and analyzing large datasets.

Skill set

Categories