Senior Software Engineer

Pluxee España; Madrid; Presencial; EUR 70.000 - 95.000; Jornada completa

Descripción de la vacante

Pluxee is a global player in employee benefits and engagement operating in 28 countries. You will join the Payments Squad as a Senior Backend Engineer, shaping the engine that moves money globally and ensuring transactional precision, idempotency, and fault tolerance.

You will work with a modern stack including MongoDB, Redis, Sentry, Datadog, and AI-assisted tools to deliver resilient backend services at scale.

Formación

• 5+ years of production-grade backend experience.
• Strong knowledge of distributed systems and idempotency.
• Experience with payments systems (gateways like Stripe/Adyen) is a plus.

Responsabilidades

• Design for resilience: Build and optimize robust backend services capable of high-volume traffic with 100% data consistency.
• Evolve distributed architectures: Transform existing systems into scalable event-driven structures.
• High-Stakes Quality: Conduct unit, integration, and performance testing.
• Operational Excellence & Observability: Monitor health and resolve bottlenecks using observability tools.
• Technical Leadership: Mentor juniors and document engineering standards.
• AI-Empowered Development: Leverage AI tools to accelerate cycles and improve delivery speed.

Conocimientos

Node.js

Distributed systems

Payments systems

AI-assisted development

Testing patterns

Herramientas

MongoDB

Redis

Sentry

Datadog

New Relic

GitHub Copilot

Claude Sonnet

ChatGPT

GitHub

GitLab

Slack

JIRA

Notion

Descripción del empleo

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.

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.

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

• Data & State: MongoDB (Atlas), Redis for caching and distributed locking.
• 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 pluz.
• Distributed Systems Mastery: Deep understanding of race conditions, eventual consistency, idempotency, and message brokers is a must.
• 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.

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.