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Josep LagunasJL

Josep Lagunas

Software Engineer

€500/day
Barcelona, ES
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Josep

Senior Software Engineer specialized in Python, AWS, and scalable architectures.
With over 10 years of backend development experience, I have worked on the design and implementation of high-performance, mission-critical platforms in sectors such as travel, fintech, and revenue management.

Throughout my career, I have led complex projects involving API integrations, the design of event-driven distributed systems (SNS, SQS, EventBridge, Kinesis), and deployments on cloud infrastructure (AWS Lambda, DynamoDB, ECS, Fargate). I also have strong expertise in relational and analytical databases (Snowflake, PostgreSQL, MySQL) and in observability tools such as Datadog.

I am comfortable working with existing codebases and adapting them with robust solutions, always maintaining a balance between delivery speed and technical quality. I enjoy mentoring other engineers and helping teams grow in best practices, testing, and monitoring.

Currently, I am looking to collaborate on projects that require platform design, performance optimization, and scalability in cloud environments, contributing both strategic vision and technical execution.
  • Spanish

    Native or bilingual

  • Catalan

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • TravelPerk
    Senior Software Engineer
    June 2020 - Today (6 years)
    Working as senior software engineer leading several projects.

    Writing RFC
    Leading engineering teams
    Stack:
    - Django (Python)
    - Tornado (Python)
    - Docker
    - AWS (serverless, ECS, ECR, DynamoDB, etc)
    - SQL (Postgres)
    - Redis
    - React (front-end)
  • D-EDGE Hospitality Solutions
    Senior Software Engineer
    September 2019 - May 2020 (8 months)
    Barcelona, Spain
    Writing RFC
    Leading engineering projects
    Stack:
    - .Net and .Net framework (C#, WebApi, …) and .Net 6 (unified fw)
    - Docker
    - Microsoft Azure (serverless)
    - SQL (SQL-server)
    - Redis
  • Yuki | Software - España
    Senior Software Engineer
    March 2017 - September 2019 (2 years and 6 months)
    Barcelona, Spain
    Writing RFC
    Leading engineering projects
    Stack:
    - .Net and .Net framework (C#, WebApi, …)
    - Docker
    - Microsoft Azure (serverless)
    - SQL (SQL-server)
    - Redis
    - Vanilla JS

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Education

  • Management Computer Engineering, Computer Software Engineering
    Universitat Politècnica de Catalunya
    2008
    Ingenieria Informática de Gestión, Computer Software Engineering
  • Associate's degree
    Instituto Politécnico Salesianos de Sarrià
    2003
    Associate's degree

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