Senior Java Backend Engineer

Powerdot; Porto; Hybrid; EUR 60,000 - 80,000; Full time

Benefits offered by this job

Private health insurance

Gym membership

Flexible working hours

Annual offsite

Regular team-building activities

English training

Meal allowance

Discounts for charging EV

Free office snacks and unlimitedcoffee

Job summary

Powerdot in Porto, Portugal, is seeking a Senior Backend Engineer to design, build, and deploy scalable microservices for our EV charging platform. You will work with Java, Spring Boot, AWS, and modern data stores to support rapid growth across Europe.

Collaborate with cross-functional teams, mentor junior engineers, and uphold engineering standards around reliability, security, and performance while shaping the technical backbone of our network.

Qualifications

• Experience designing, building, and deploying production-grade microservices with Java and Spring Boot.
• Hands-on experience with AWS (EC2, S3, Lambda, RDS) in production.
• Good understanding of relational and NoSQL databases and data modeling.
• Experience with RabbitMQ or Kafka for async messaging.
• Familiarity with Docker and Kubernetes in dev/prod workflows.
• Strong problem-solving and communication skills; able to collaborate with non-technical stakeholders.
• EV charging domain experience is a plus.

Responsibilities

• Collaborate with cross-functional teams to align backend services with business needs.
• Design and develop microservices architectures using Java and Spring Boot.
• Implement AWS services to scale operations across Europe.
• Create and optimize relational and non-relational databases.
• Work with RabbitMQ and Kafka for inter-service communication.
• Use Docker and Kubernetes to streamline deployment and scaling.
• Maintain high standards of code quality with reliability and security.
• Provide technical guidance and mentorship to junior engineers.

Skills

Microservices

Java

Spring Boot

AWS

Databases

Messaging systems

Docker

Kubernetes

Code quality & testing

Mentorship

Communication

Problem solving

Tools

RabbitMQ

Kafka

Docker

Kubernetes

AWS EC2

AWS S3

AWS Lambda

AWS RDS

PostgreSQL/MySQL

MongoDB

Job description

About the job

Charging your car should be as easy as charging your smartphone. And so for that to happen, chargers need to be available where people naturally spend their days.

Charging your car should be as easy as charging your smartphone. And so for that to happen, chargers need to be available where people naturally spend their days.

Our mission is as simple as it is ambitious: Accelerate Sustainable Mobility by investing in, installing, and operating EV chargers with a cutting‑edge business model. We help businesses find the right charging solutions for their customers. Today, we've partnered with over 1,200 businesses across Portugal, Spain, France, Belgium, Luxembourg, and Poland, with more than 2,200 contracted locations.

We are, first, Partner Obsessed — creating bespoke solutions to better serve our partners' customers. We love the challenge of making EV charging simpler, readily available, and integrated with diverse retail and service experiences. And we are all about growing — expanding our network, our partners' businesses, and the professional development of our team, all while driving the EV ecosystem forward.

We seek empowered top performers who share our mission and values, and who are ready to think disruptively and join our exciting journey.

About This Role

As a Senior Backend Engineer at Powerdot, you'll play a crucial role in designing, developing, and deploying high-performance, scalable backend services that form the backbone of our EV charging platform. Your mission is to build and maintain systems that are reliable, secure, and performant enough to support our rapid growth across Europe — ensuring every service scales seamlessly as we expand. Working closely with cross‑functional teams, you'll translate business needs into robust technical solutions that keep our network running 24/7.

How You'll Shape Our Story

• Collaborating with cross‑functional teams — understanding their requirements and ensuring backend services meet the needs of the business and our partners.
• Designing and developing microservices architectures — using Java and Spring Boot to build modular, scalable, and maintainable services.
• Implementing AWS services — leveraging EC2, S3, Lambda, and RDS to ensure scalable, efficient, and cost‑effective operations.
• Creating and optimizing database systems — designing both relational and non‑relational databases, ensuring data integrity, performance, and reliability.
• Working with messaging systems — using RabbitMQ and Kafka for seamless, resilient inter‑service communication.
• Utilizing containerization and orchestration — employing Docker and Kubernetes to streamline development, deployment, and scaling processes.
• Maintaining high standards of code quality — following best practices around reliability, security, and testability, and upholding rigorous engineering standards.
• Providing technical guidance and mentorship — supporting junior engineers through code reviews, pairing sessions, and knowledge sharing.

This Is About You, Not Us

• Strong experience in microservices architectures — you've designed, built, and deployed production‑grade microservices using Java and Spring Boot.
• Proficient with AWS services — hands‑on experience with EC2, S3, Lambda, and RDS in production environments.
• Deep understanding of database systems — skilled in database design, optimization, and performance tuning across both relational and non‑relational databases.
• Familiarity with messaging systems — practical experience with RabbitMQ and Kafka for asynchronous, event‑driven architectures.
• Knowledge of containerization and orchestration — comfortable with Docker and Kubernetes in development and production workflows.
• Strong problem‑solving skills — you break down complex technical challenges and drive them to resolution, independently or as part of a team.
• Excellent communication skills — you collaborate effectively with cross‑functional teams and can convey technical concepts clearly to non‑technical stakeholders.
• Experience in the EV charging industry is a plus but not required.

The Kind of Energy We're Looking For

• We're not into titles, egos, or corporate buzzwords. We're into people who make things happen.
• You lead and listen. Whether steering initiatives or supporting teammates, you bring others with you and keep communication wide open.
• You own your stuff. You don't wait for instructions: you see an opportunity, grab it, and make it better than anyone expected.
• You've got a green heartbeat. Sustainability isn't just cool, it's core. You care about doing work that leaves the world a little better than you found it.
• You balance hustle with humanity. You love the buzz of in‑person teamwork, but you also know when to recharge.
• You grow on purpose. You're hungry to learn, to stretch, and to build something meaningful, not just rack up LinkedIn bullet points.

How you'll be Powered up

• Private health insurance coverage
• Gym membership to help you stay active
• Flexible working hours: you own your time
• Annual offsite to celebrate achievements and connect with colleagues
• Regular team‑building activities with your local team
• English training — as English is our language used to connect with all markets and teams
• Free office snacks, unlimited coffee, and meal allowance for every worked day
• Special discounts for charging your electric vehicle

Our Promise To You

The best solutions come from different voices. We're building a culture where inclusion, respect, and equal opportunity aren't policies — they're lived every day. At Powerdot, everyone has the space to speak up, challenge the status quo, and make a difference. Your voice powers the future — literally.