Senior JavaScript Software Engineer (Barcelona - Hybrid)

Posted Yesterday
Be an Early Applicant
Barcelona, Cataluña, ESP
Hybrid
Senior level
Information Technology • Consulting
The Role
Design, build, and maintain scalable, low-latency backend services using Node.js and AWS (EC2, Lambda). Implement event-driven architectures with SQS/SNS, use DynamoDB for high-performance data, develop RESTful APIs, monitor and optimize performance, and participate in code reviews and cross-functional collaboration.
Summary Generated by Built In

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.




Skills Required

  • 5+ years of experience working as a Frontend Engineer
  • Strong experience with Node.js and backend application development
  • Hands-on experience with AWS (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
  • Experience developing projects using frameworks
  • AI tooling proficiency (leverage AI tools for drafting, analysis, automation)
  • Experience building systems that process millions of messages per day
  • Experience designing and optimizing low-latency distributed systems
  • Knowledge of graceful degradation strategies for resilience
  • Experience with high-availability, fault-tolerant, cloud-native architectures
  • Familiarity with performance optimization and scalability best practices

Wizeline Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Wizeline and has not been reviewed or approved by Wizeline.

  • Healthcare Strength Core coverage spans medical, dental, vision, life and disability insurance, with private medical commonly included in Mexico. Additional support such as EAP and wellness programs is also referenced.
  • Leave & Time Off Breadth Paid vacation, holidays, sick leave, volunteer time, and parental leave are called out, alongside flexible or remote work options. Unlimited PTO is mentioned in some contexts.
  • Retirement Support Savings and retirement elements appear across regions, including a 401(k) in the U.S. and a savings fund and profit sharing in Mexico. These components provide structured long-term financial benefits.

Wizeline Insights

Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: New York, NY
1,444 Employees
Year Founded: 2014

What We Do

Wizeline, a global technology services provider, builds the best digital products and platforms at scale. We focus on measurable outcomes, partnering with our customers to modernize core technologies, mature data-driven capabilities, and improve user experience.

Similar Jobs

Perk Logo Perk

Sales Development Representative

Artificial Intelligence • Fintech • Greentech • Sales • Software • Travel • Hospitality
Hybrid
Barcelona, Cataluña, ESP
1800 Employees

Perk Logo Perk

Sales Development Representative

Artificial Intelligence • Fintech • Greentech • Sales • Software • Travel • Hospitality
Hybrid
Barcelona, Cataluña, ESP
1800 Employees

Perk Logo Perk

Card Operations Team Manager

Artificial Intelligence • Fintech • Greentech • Sales • Software • Travel • Hospitality
Hybrid
Barcelona, Cataluña, ESP
1800 Employees

Perk Logo Perk

Technical Account Manager

Artificial Intelligence • Fintech • Greentech • Sales • Software • Travel • Hospitality
Hybrid
3 Locations
1800 Employees

Similar Companies Hiring

Amplify Platform Thumbnail
Fintech • Financial Services • Consulting • Cloud • Business Intelligence • Big Data Analytics
Scottsdale, AZ
62 Employees
Standard Template Labs Thumbnail
Artificial Intelligence • Information Technology • Software
New York, NY
25 Employees
Golden Pet Brands Thumbnail
Digital Media • eCommerce • Information Technology • Marketing Tech • Pet • Retail • Social Media
El Segundo, California
178 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account