Senior Backend Engineer (Node.js / MongoDB)

planet; Lisboa; Híbrido; EUR 65 000 - 90 000; Tempo integral

Resumo da oferta

Planet is seeking a Senior Backend Engineer to design, build, and scale high-performance backend services. You will shape API design, data models, and system architecture to support modern applications in a hybrid cloud environment.

You will implement RESTful APIs with Node.js/TypeScript, design MongoDB schemas, optimize queries, and ensure scalable, observability-friendly code. Familiarity with Redis caching and AI-enabled data workflows is a plus.

Qualificações

• Strong experience with Node.js (TypeScript preferred) and REST APIs.
• MongoDB schema design, indexing, and aggregation.
• Experience building scalable backend systems for high-throughput workloads.

Responsabilidades

• Design and develop RESTful APIs using Node.js.
• Build backend services optimized for Angular frontend consumption.
• Ensure consistency in API structure and response formats.
• Write clean, maintainable, and testable code.
• Design efficient MongoDB schemas and indexing strategies.
• Optimize queries and aggregation pipelines for analytics and AI use cases.
• Architect systems for high throughput and low latency.
• Implement caching strategies (Redis or similar).
• Design stateless services for horizontal scalability.

Conhecimentos

Node.js

TypeScript

REST APIs

MongoDB

Performance optimization

Ferramentas

Redis

Descrição da oferta de emprego

About Planet

Planet is a global provider of integrated technology and payments solutions for retail and hospitality customers. We create great experiences for the millions of people who use our payments, software, and tax-free solutions every minute of every day. Planet empowers its customers to deliver great customer experiences by combining payments and software in ways that drive greater loyalty, increase revenue and save time.

Role Overview

We are looking for a Senior Backend Engineer to design, build, and scale high-performance backend services. You will shape API design, data models, and system architecture to support modern applications and evolving workloads. This role focuses on building clean REST APIs for Angular frontends, operating in a hybrid cloud environment, and integrating AI-driven features and data workflows where relevant.

What you will do

Backend Development

• Design and develop RESTful APIs using Node.js
• Build backend services optimized for Angular frontend consumption
• Ensure consistency in API structure and response formats
• Write clean, maintainable, and testable code

Data Modeling & Storage

• Design efficient MongoDB schemas aligned with application and data usage patterns
• Optimize queries, indexing strategies, and aggregation pipelines
• Structure data models to support analytics and AI use cases

Scalability & Performance

• Architect systems for high throughput and low latency
• Identify and resolve performance bottlenecks
• Implement caching strategies (Redis or similar)
• Design stateless services for horizontal scalability

API Design (REST Focus)

• Design predictable, frontend-friendly REST endpoints
• Optimize payloads for Angular services and UI performance
• Implement pagination, filtering, and consistent error handling

AI & Data Awareness

• Support integration of AI-powered features (insights, automation, recommendations)
• Expose clean, structured data usable by AI/ML and LLM-based systems
• Contribute to pragmatic use of data pipelines or AI services

Who you are

Core Skills :

strong experience with Node.js (TypeScript preferred), solid expertise in MongoDB (schema design, indexing, aggregation), strong experience designing REST APIs

System & Data Design :

Experience building scalable backend systems, understanding of data models supporting AI‑enabled applications

Nice to Have :

experience integrating AI/ML or LLM-based services, knowledge of data pipelines or RAG-style architectures, high availability systems

Why Planet:

Planet is an equal opportunity employer where diversity is valued, and all employment is decided based on qualifications, merit, and business need. Come and grow your career in the most exciting, fast paced technology market, with a business that delivers feel-good connected commerce.

We would love to hear from you

Hybrid Work Model

At Planet, we embrace a hybrid work model, with three days a week in the office.

Reasonable accommodations may be made in order to allow for an individual to perform the essential functions of this role successfully.