Senior Backend Developer

Are you passionate about making a sustainable impact in the world of electric transport? Do you thrive in an innovative and entrepreneurial environment? Then you might be the new regional assistant to Erinion!

At Erinion, part of the Scania Group, we are leading the global shift towards a more sustainable transport system by shaping the future within charging and e-mobility.

Our business

We offer private and semi-public charging solutions to build, own and operate infrastructure at customer sites to enhance their operational efficiency, minimize cost and increase flexibility. Erinion is on a fast-paced growth trajectory, if you thrive in dynamic environments fuelled by innovation and collaboration, then Erinion is the place for you!

Role Summary

As a Senior Backend Developer, you will play a key role in building and evolving Erinion Connect, our cloud-native Charging Management System (CMS) for smart charging and energy management in commercial transport.

Working closely with Product, Engineering, Analytics and Applied AI teams, as well as a strategic technology partner, you will design and deliver scalable backend services, integrations and cloud-native solutions that support Erinion's growth.

We're looking for an experienced engineer who combines strong backend expertise with architectural thinking. AI-assisted development tools are part of our daily workflow, but we value engineers who can independently drive technical decisions and build robust, scalable systems.

This is a backend-first role, with approximately 70% of the work focused on platform and integration engineering and the flexibility to contribute across the stack when needed.

Job Responsibilities

• Build and enhance backend services using Python and Node.js/TypeScript.
• Design scalable APIs, integrations, and event-driven architectures.
• Develop solutions for smart charging, energy management, and fleet platforms.
• Integrate Erinion Connect with TMS, FMS, ERP, and telematics systems.
• Contribute to platform architecture and long-term product evolution.
• Support React-based frontend development when needed.
• Use AI-assisted development tools to accelerate software delivery.

Who You Are

• 5+ years of experience in backend software engineering.
• Strong experience with Python and/or Node.js (TypeScript).
• Experience designing and building cloud-native applications on AWS.
• Solid understanding of software architecture, distributed systems and integration patterns.
• Experience with PostgreSQL, DynamoDB and cloud storage solutions.
• Experience building REST APIs, microservices and event-driven systems.
• Ability to make sound technical and architectural decisions independently.
• Experience using AI-assisted coding tools in day-to-day development.
• Fluent English.

Nice to have

• React experience.
• Java experience.
• Experience with TMS, FMS, ERP or telematics integrations.
• Knowledge of OCPP, OCPI or EV charging technologies.
• Experience with TimescaleDB.
• Startup or scale-up experience.

We welcome applicants from all backgrounds - your unique experience and perspectives is valuable to us.

Core Technology Stack

Languages: Python, Node.js, TypeScript, Java, Frontend: React

Cloud & Infrastructure: AWS (Lambda, API Gateway, SQS, Step Functions, EventBridge, Cognito, S3), CloudFormation, Docker, GitLab CI

Databases: PostgreSQL, DynamoDB, S3, TimescaleDB (nice to have)

Architecture & Integration: REST APIs, Microservices, Event-driven Architecture, WebSockets

AI Tooling: Claude Code, Codex, AI-assisted Development

Our offer

Join our passionate team in Stockholm city, at Drottninggatan 29, and be a driving force in the future of sustainable transportation. At Erinion, you won't just be a part of the change, you'll be pioneering it. We offer a competitive compensation package, alongside unparalleled professional growth opportunities. This is an early-stage company where your ideas are valued, your contributions have a significant impact, and you have the chance to develop and grow alongside Erinion.

Application

We look forward to receiving your application, consisting of your CV in English and kindly ask you not to share a cover letter to ensure an efficient and unbiased recruitment process for all parties.

Apply as soon as possible, no later than 2026-08-11. Screening will take place on an ongoing basis during the application period. Logical and personality tests may be used as part of the selection process, and a background check may be required for this role.

If you have questions or would like more information, please contact: Karolina Skibińska, Talent Acquisition Spcialist, karolina.skibinska@scania.com or Henrik Karlsson, Head of Technology, henrik.xy.karlsson@scania.com

We look forward to your application!

Requisition ID: 30593

Number of Openings: 1.0

Part-time / Full-time: Full-time

Permanent / Temporary: Permanent

Country/Region: SE

Location(s):
Södertälje, SE, 151 38

Required Travel: 0-25%

Workplace: Hybrid