EnerSys is a global leader in stored energy solutions for industrial applications. We have over thirty manufacturing and assembly plants worldwide servicing over 10,000 customers in more than 100 countries. Worldwide headquarters are located in Reading, PA, USA with regional headquarters in Europe and Asia. We complement our extensive line of Motive Power and Energy Systems with a full range of integrated services and systems. With sales and service locations throughout the world, and over 100 years of battery experience, EnerSys is the power/full solution for stored DC power products.

About The Job

We are looking for a Backend Engineer for our Engineering team!

As a Backend Engineer you will join our team, and you will contribute to the design, development, and evolution of our IoT platform.

You will focus on backend services, APIs, data processing, integrations, and cloud-native architecture. The ideal candidate has strong backend engineering experience, solid software design skills, and the ability to work independently in a distributed environment.

Fluency in English is essential, as the role requires regular collaboration with international stakeholders, engineering teams, product owners, and external partners.

Key Responsibilities

Design, develop, test, and maintain backend services for a cloud-based IoT platform
Build reliable, scalable, and secure APIs used by Web applications, mobile applications, devices, and external systems
Contribute to the architecture of backend components, microservices, data flows, and integrations
Work on features related to device management, telemetry ingestion, user management, notifications, reporting, firmware updates, and system integrations
Collaborate with frontend engineers, DevOps engineers, architects, QA, and product stakeholders
Ensure backend services are observable, maintainable, and ready for production use
Write clean, well-tested, and well-documented code
Participate in code reviews and promote engineering best practices
Contribute to technical decisions around scalability, performance, security, and maintainability

What We Offer

Flexible working model
Opportunity to work on a modern IoT platform with real-world industrial impact
International and cross-functional collaboration: we work at global level and your work will have worldwide exposure
Technical ownership and involvement in architectural decisions
A role with strong impact on backend quality, scalability, and reliability
Learning investments, including English lessons and things like courses, conferences, and books
You will be involved in projects that will have an impact on the future of energy storage and e-mobility, becoming a master of current and new technologies

Experience And Skills

Strong professional experience as a Backend Engineer, Software Engineer, or similar role
Solid experience designing and implementing backend services and REST APIs
Good understanding of distributed systems, microservices, and cloud-native architectures
Experience with relational and/or time-series databases
Good knowledge of authentication, authorization, API security, and secure coding practices
Experience writing automated tests and working with CI/CD pipelines
Ability to analyze requirements and translate them into robust technical solutions
Strong problem-solving skills and ownership mindset
Experience working in Agile or iterative development environments
Fluency in English, both written and spoken

The following skills are considered a plus, but are not mandatory:

Experience with Python
Experience with Microsoft Azure
Experience with Azure services such as Azure Kubernetes Service, Azure Container Registry, Azure Key Vault, Azure Blob Storage, or Azure Pipelines
Experience with Kubernetes, Docker, Helm, or GitOps tools
Experience with IoT platforms, telemetry ingestion, device management, or firmware update workflows
Experience with message brokers, event-driven architecture, or high-throughput data pipelines
Experience with infrastructure as code, especially Terraform
Experience with monitoring, logging, tracing, and production support

Soft Skills

Experience with Python
Experience with Microsoft Azure
Experience with Azure services such as Azure Kubernetes Service, Azure Container Registry, Azure Key Vault, Azure Blob Storage, or Azure Pipelines
Experience with Kubernetes, Docker, Helm, or GitOps tools
Experience with IoT platforms, telemetry ingestion, device management, or firmware update workflows
Experience with message brokers, event-driven architecture, or high-throughput data pipelines
Experience with infrastructure as code, especially Terraform
Experience with monitoring, logging, tracing, and production support

Recruitment process

The recruitment process is designed to evaluate both technical capabilities and cultural fit, while giving the candidate a clear understanding of the role, the team, and the company expectations.

The recruitment process includes four steps:

HR interview

Initial discussion about the role, company, motivation, availability, salary expectations, and English fluency

Engineering Manager interview

Review of the candidate’s backend experience, technical ownership, problem-solving approach, and ability to work in an international remote team

Peer evaluation

Conversation with a future teammate to assess collaboration style, practical engineering skills, code quality mindset, and team fit

Software Director interview

Final interview focused on seniority, organizational fit, leadership attitude, and alignment with engineering expectations

Offer

EnerSys is always looking to hire top talent. Therefore, we encourage our employees to refer anyone they feel would be a great addition to our organization.

Backend Engineer

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