Senior Software Engineer

PRT8 Addvolt, S.A.; São Mamede de Infesta; On-site; EUR 28,000 - 56,000; Full time

Benefits offered by this job

Flexible working model

Competitive compensation

Job summary

PRT8 Addvolt, S.A. in Porto, Portugal, seeks a Senior Software Engineer to design, build and maintain software powering connected, electrified fleet solutions. You will work across the full stack from device connectivity to customer dashboards, while building cloud infrastructure on AWS.

The role requires strong backend and frontend fundamentals, hands-on AWS expertise, Docker, and a passion for IoT and fleet energy management. Collaboration with product, hardware and data teams is essential.

Qualifications

• Degree in Computer Science, Software Engineering, or a related field.
• Hands-on experience with at least one backend language (Python/Node.js/Go) and modern frontend frameworks (React).
• Mandatory, hands-on experience with AWS (EC2, RDS, S3, Lambda, IAM).
• Experience with containerization (Docker) and Linux environments.
• Familiarity with relational and NoSQL databases and building REST/GraphQL APIs.
• Understanding of CI/CD pipelines, Git, and software testing practices.
• Strong problem-solving skills and genuine interest in IoT and fleet/energy management.
• Good communication skills and cross-functional collaboration.
• Fluent in English; Portuguese is a plus.

Responsibilities

• Design, build and maintain software powering connected, electrified fleet solutions.
• Work across full stack (frontend, backend, APIs) and cloud infrastructure on AWS.
• Collaborate with product, hardware and data teams to ship reliable features.
• Write clean, tested code and contribute to CI/CD and system architecture improvements.
• Troubleshoot issues across the stack including production incidents.
• Create and maintain technical documentation and foster knowledge sharing.

Skills

Python

Node.js

React

AWS

IoT

Education

Bachelor's or higher in CS/SE

Tools

Docker

Kubernetes

Terraform

Git

Job description

Rol: Senior Software Engineer

Location: Porto, Portugal

Type of contract: Permanent

Carrier is the leading worldwide provider of heating, ventilation, and air conditioning (HVAC), refrigeration, fire, security, and cold chain solutions. We invented the modern air conditioning, and our team of pioneers and innovators have a long history of developing new technologies. Addvolt, now part of Carrier, global leader in intelligent climate and energy solutions, delivers advanced electrification technology, integrated power management and power electronics capabilities for transport refrigeration and auxiliary systems. Driving innovation in the electrification and decarbonization of onboard systems for refrigerated trailers, trucks, vans and containers, Addvolt empowers fleets to avoid fuel usage, reduce major emissions and operate efficiently at a remarkably low noise level. By combining Addvolt’s innovative power solutions with Carrier Transicold’s expertise in transport refrigeration, we are enhancing the value we deliver to fleets, original equipment manufacturers and logistics operators worldwide. Together with Carrier, we are accelerating the transition to a more sustainable, efficient and intelligent cold chain.

YOUR MISSION

As a Software Engineer at Addvolt, you will design, build and maintain the software that powers our connected, electrified fleet solutions — from device connectivity and data pipelines to the platforms our customers use every day. You will work across the full stack, collaborating closely with product, hardware and data teams to ship reliable, scalable features. Design, develop, test and maintain full-stack features across our platform (frontend, backend and APIs). Build and maintain cloud infrastructure and services on AWS (e.g. EC2, RDS, S3, Lambda), ensuring our systems are scalable, secure and cost-efficient. Work with data flowing from hardware devices (CAN, cellular/LTE, MQTT) through backend services and databases, all the way to the UI. Participate in the full software development lifecycle: requirements discussion, design, implementation, code review, testing, deployment and monitoring. Write clean, well-tested, maintainable code and contribute to improving our engineering practices, CI/CD pipelines and system architecture. Collaborate with product managers, designers and other engineers to translate requirements into technical solutions. Troubleshoot, debug and resolve issues across the stack, including production incidents when needed. Contribute to technical documentation and knowledge sharing within the team.

WHO YOU ARE

• Degree in Computer Science, Software Engineering, or a related technical field (or equivalent hands-on experience).
• Solid experience as a Software Engineer/Developer, with strong fundamentals in at least one backend language (e.g. Python, Node.js, Go) and modern frontend frameworks (e.g. React).
• Mandatory, hands-on experience with AWS (e.g. EC2, RDS, S3, Lambda, IAM) — you are comfortable deploying, operating and troubleshooting cloud infrastructure in production.
• Experience with containerization (Docker) and comfortable working in Linux environments.
• Familiarity with relational and/or NoSQL databases, and with building and consuming REST/GraphQL APIs.
• Understanding of CI/CD pipelines, version control (Git) and software testing practices.
• Strong problem-solving skills, attention to detail, and a genuine interest in IoT, connected devices and fleet/energy management domains.
• Good communication skills, comfortable collaborating with cross-functional teams (product, hardware, data).
• Ownership mindset — comfortable taking a feature from idea to production and supporting it afterwards.
• Fluent in English (written and spoken); Portuguese is a plus.

NICE TO HAVE

• Experience with Infrastructure as Code (e.g. Terraform, CloudFormation).
• Exposure to data engineering/ETL pipelines or analytics platforms.
• Experience with IoT protocols (MQTT, CAN) or embedded/connected device integrations.
• Experience with Figma or similar tools for UI collaboration.

WHAT WE OFFER

The opportunity to build software that powers real-world, cutting-edge automation and electrification technology, in a fast-growing, mission-driven company.

A collaborative, technical environment where you'll work closely with hardware, product and data experts every day.

Ownership over meaningful features and real opportunity for technical growth.

Competitive compensation package, aligned with experience.

Flexible working model.

Pay Range €28,000.00-€56,000.00

OUR COMMITMENT

Our greatest assets are the expertise, creativity, and passion of our employees.

We provide a work environment that fosters innovation, collaboration, and growth, attracting and retaining the best talent.

Diversity, inclusion, and employee engagement are central to our culture.

We offer enriching career opportunities, professional development programs, and continuous feedback to help you succeed.

Join us and make a difference.