Software Engineer - Payment

Pluxee España; España; On-site; PHP 4,367,000 - 6,550,000; Full time

Job summary

Pluxee España is seeking a Senior Backend Engineer to join the Payments Squad in Lleida. You will help build the engine that moves money globally, focusing on resilience, idempotency, and fault tolerance.

You will work closely with React/React Native teams while keeping backend 100% focused. Requirements include 5+ years in production-grade systems, strong Node.js/TypeScript skills, and experience with distributed architectures. Fluency in Spanish and English is valued.

Qualifications

• 5+ years of production-grade backend experience.
• Experience with Node.js ecosystem is a plus.
• Deep understanding of race conditions, eventual consistency, idempotency, and message brokers.
• Experience with banking systems, payment gateways, ledger or reconciliation processes is a plus.
• AI-based development: ability to leverage AI tools for problem solving and workflow optimization.
• Strong troubleshooting skills in high-concurrency environments.
• Experience with automated testing patterns and shift-left security mindset.
• Growth mindset with willingness to learn and mentor others.
• Fluent in Spanish and English.

Responsibilities

• Design resilient backend services for high-volume traffic with 100% data consistency.
• Evolve existing systems into scalable, event-driven architectures.
• Lead testing strategy and performance simulations; ensure quality.
• Monitor production health and resolve bottlenecks with observability.
• Provide technical leadership through code reviews and mentoring.
• Leverage AI tools to speed development and automate tasks.

Skills

5+ years exp

Distributed systems

AI-powered developer

Problem solving

Growth mindset

Spanish & English fluency

Tools

Node.js

TypeScript

NestJS

MongoDB

Redis

PostgreSQL

Docker

Kubernetes

GitLab CI/CD

Sentry

Datadog

New Relic

GitHub Copilot

Claude Sonnet

ChatGPT

GenAI tools

GitHub

GitLab

Slack

JIRA

Notion

Job description

Software Engineer - Payment Pluxee España•Lleida, segriá (comarca); provincia de lleida; cataluña, Spain

Descripción del trabajo

Pluxee is a global player in employee benefits and engagement that operates in 28 countries.

Pluxee helps companies attract, engage, and retain talent thanks to a broad range of solutions across Meal & Food, Wellbeing, Lifestyle, Reward & Recognition, and Public Benefits.

Powered by leading technology and more than 5,000 engaged team members, Pluxee acts as a trusted partner within a highly interconnected B2B2C ecosystem made up of more than 500,000 clients, 36 million consumers and 1.7 million merchants.

Conducting its business as a trusted partner for more than 45 years, Pluxee is committed to creating a positive impact on all its stakeholders, from driving business to local communities, to supporting wellbeing at work for employees while protecting the planet.

Your next challenge

Join Pluxee as a Senior Backend Engineer and become a key contributor to our mission of revolutionizing employee compensation. You’ll join the Payments Squad , a high-performance team dedicated to building the engine that moves money globally. We don’t just write code; we design resilient, mission-critical systems where transactional precision , idempotency , and fault tolerance are at the heart of everything we do.

Key Responsibilities

What You’ll Do

• Design for Resilience: Build and optimize robust backend services capable of handling high-volume traffic while ensuring 100% data consistency and system reliability.
• Evolve Distributed Architectures: Understand the complexities of existing systems and evolve them into scalable, event-driven architectures to meet future global product requirements.
• High-Stakes Quality: In Payments, there is no room for error. You will be responsible for comprehensive testing (unit, integration, and acceptance) as well as advanced load and performance simulations.
• Operational Excellence & Observability: Monitor service health in production, using observability tools to proactively identify and resolve bottlenecks or anomalies.
• Technical Leadership: Share your expertise through deep code reviews, mentoring junior engineers, and documenting engineering standards that elevate the entire squad.
• AI-Driven Execution : Actively leverage AI tools and coding assistants on a daily basis to accelerate development cycles, automate repetitive tasks, and optimize overall team processes and delivery speed.

Our Technical Stack

• Backend Core: Node.js (TypeScript), NestJS (or similar frameworks).
• Data & State: MongoDB (Atlas), Redis for caching and distributing locking and PosgreSQL for our ledger database
• Infrastructure: Docker, Kubernetes, GitLab CI/CD (deploying multiple times daily).
• Observability: Sentry and Datadog/New Relic for real-time monitoring.
• AI & Productivity: GitHub Copilot, Claude Sonnet, ChatGPT, and other GenAI assistants.
• Collaboration: GitHub, GitLab, Slack, JIRA, Notion.
• (Note: You will collaborate closely with our React/React Native teams, but your focus will be 100% Backend).

You are a match

• Proven Senior Expertise: 5+ years of experience developing production-grade applications. Experience within the Node.js ecosystem will be a plus.
• Distributed Systems Mastery: Deep understanding of race conditions, eventual consistency, idempotency, and message brokers.
• The \"Payments Mindset\": experience with banking systems, payment gateways (Stripe, Adyen, etc.), ledger systems, or reconciliation processes will be a plus.
• AI-Empowered Developer : A strong inclination to lean on AI tools for problem-solving, code generation, and workflow optimization, always looking for ways to work smarter and improve team efficiency.
• Problem-Solving DNA: A systematic approach to troubleshooting complex issues in high-concurrency environments.
• Quality First: Extensive experience with automated testing patterns and a \"shift-left\" security mindset.
• Growth Mindset: A passion for continuous learning, open to feedback, and a drive to help others improve their craft.
• Spanish & English fluency.

Happy at work

1) A meaningful job: Be the change! Help us build the future of employee benefits by bringing to life sustainable and personalized experiences and contribute to make a real impact on millions of lives. Our business model delivers not just for individuals but their communities too, by supporting local businesses and economies.

2) A great culture: People matter – a lot! Be part of a multicultural team that moves as one in a fast paced and innovative environment. We respect and care authentically about our people, we embrace wellbeing and work-life balance, new ideas and we have a lot of fun!

3) An empowering environment: Be yourself! At Pluxee we proudly embrace diversity and value the uniqueness of our talents, fostering an inclusive workplace where all abilities are celebrated, and equal learning and growing opportunities are a given.