SECTION I · THE BRIEF
Brief #64871Updated 14 JUL 2026BARCELONAGreenhouseSAN FRANCISCO
Employbl Company Profile

Senior JavaScript Software Engineer (Barcelona - Hybrid)

Wizeline is a global product development company. We help our clients solve their biggest challenges with design and technology.

Location
Barcelona
Company size
1,000–2,000
Posted
Yesterday
Via
Greenhouse
Section II · Premium ProfileMembers only
  • 01Comp band & equity packageLocked
  • 02Seniority & experience requirementsLocked
  • 03Interview process & rubricLocked
  • 04Hiring manager & team contextLocked
  • 05Growth trajectory in this roleLocked
  • 06Offer & decision timelineLocked

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Senior JavaScript Software Engineer (Barcelona - Hybrid) · Wizeline

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Job title
Senior JavaScript Software Engineer (Barcelona - Hybrid)
Job location
Barcelona, Spain
Job description

We are:
Wizeline, a global AI-native technology solutions provider, develops cutting-edge, AI-powered digital products and platforms. We partner with clients to leverage data and AI, accelerating market entry and driving business transformation. As a global community of innovators, we foster a culture of growth, collaboration, and impact.

With the right people and the right ideas, there’s no limit to what we can achieve

Are you a fit?
Sounds awesome, right? Now, let’s make sure you’re a good fit for the role:

Key Responsibilities

  • Design, develop, and maintain scalable backend services using Node.js.
  • Build and optimize cloud-native applications on AWS.
  • Develop and maintain event-driven and messaging-based architectures using SQS and SNS.
  • Design and manage serverless solutions with AWS Lambda.
  • Work with DynamoDB to build high-performance, scalable data solutions.
  • Collaborate with cross-functional teams to deliver reliable, low-latency backend services.
  • Monitor, troubleshoot, and optimize system performance, availability, and scalability.
  • Participate in code reviews and contribute to engineering best practices.

Must-have Skills 

  • +5 years of experience working as a Frontend Engineer.
  • Strong experience with Node.js and backend application development.
  • Hands-on experience with AWS, including:
    • EC2
    • Lambda
    • SQS
    • SNS
    • DynamoDB
  • Experience designing and developing scalable distributed systems.
  • Knowledge of asynchronous programming and event-driven architectures.
  • Experience building RESTful APIs and backend integrations.
  • Strong problem-solving and debugging skills.
  • Excellent communication and collaboration skills.

Nice-to-have:

  • AI Tooling Proficiency: Leverage one or more AI tools to optimize and augment day-to-day work, including drafting, analysis, research, or process automation. Provide recommendations on effective AI use and identify opportunities to streamline workflows.
  • Experience building systems that process millions of messages per day with high reliability.
  • Experience designing and optimizing low-latency distributed systems.
  • Knowledge of graceful degradation strategies to ensure service resilience under failure conditions.
  • Experience with high-availability, fault-tolerant, and cloud-native architectures.
  • Familiarity with performance optimization and scalability best practices.

Experience developing projects using frameworks.What we offer:

  • A High-Impact Environment
  • Commitment to Professional Development
  • Flexible and Collaborative Culture
  • Global Opportunities
  • Vibrant Community
  • Total Rewards

*Specific benefits are determined by the employment type and location.


Find out more about our culture here.

 

 

 

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Wizeline headquarters

San Francisco, CA

Company size

1,0002,000 employees

Founded

2013

Total raised

$100,100,000

View company profile ↗

Funding rounds

  • Series Unknown$38M
  • Series Unknown$38M
  • Series B$43M
  • Series B$43M
  • Series Unknown$10M
  • Series A$6.3M
  • Series A$6.3M
  • Series A$11.1M
  • Series A$11.1M
  • Seed$1.7M
  • Seed$1.7M