Job Description

About the Role
We are looking for a Shopify Technical Lead / Senior Backend Engineer to join our team at Mindera.
You'll play a key role in architecting and building scalable APIs that integrate with Shopify and related e-commerce systems, while guiding the engineering team on best practices, design principles, and delivery excellence.
This is not a typical front-end Shopify theme development role -- it's a backend-focused architecture and integration position, where you'll shape how our systems interact with Shopify's APIs, handle data exchange, and ensure performance, security, and maintainability at scale.
You'll collaborate closely with product teams, solution architects, and engineering peers to design domain-driven, event-driven systems that power large-scale commerce experiences.
Key Responsibilities

• Lead the design and development of backend systems that integrate with Shopify using Java (Micronaut) and RESTful APIs.
• Define API contracts and ensure compliance with OpenAPI / AsyncAPI specifications.
• Architect and build event-driven integrations leveraging Kafka and asynchronous messaging patterns.
• Establish engineering standards, including linting, formatting, security, and code quality practices.
• Guide and mentor engineers in software architecture, clean code, and delivery excellence.
• Collaborate with product and DevOps teams to enable scalable deployments, observability, and resilience.
• Implement and enforce test automation, including unit, contract, and integration testing strategies.
• Contribute to the creation of reusable components such as validators, interceptors, and shared libraries.
• Drive continuous improvement through code reviews, technical documentation, and governance.

Requirements
Core Technical Skills
Backend Development

• Java (preferably Micronaut; Spring Boot experience also valued)
• Gradle, REST, Kafka scaffolding
• Service monitoring and health checks

API Design & Integration

• OpenAPI / AsyncAPI specification-driven design
• Deep understanding of Shopify APIs (Admin, Storefront, GraphQL)
• Integration with external systems (inventory, pricing, catalog, and order management)

Testing & Quality

• Strong focus on testing principles: unit, mock, and contract testing
• Test data generation, code coverage analysis, and CI/CD integration
• Emphasis on clean, maintainable, and well-reviewed code

Architecture & Patterns

• Domain-Driven Design (DDD) and Event-Driven Architecture (EDA)
• Designing reusable components (e.g., Catalogue Validator)
• Observability, error handling, and fault-tolerant microservices

Dev Standards & Governance

• Code linting, formatting, and static analysis tools
• Secure coding and compliance with internal governance standards
• Code documentation and best-practice enforcement

Desirable Skills

• Experience with Shopify Plus, custom app development, and API orchestration.
• Exposure to cloud environments (AWS, Azure) and containerized deployments (Docker/Kubernetes).
• Familiarity with CI/CD pipelines (GitHub Actions, Jenkins).
• Prior experience mentoring small engineering teams and influencing architecture decisions.
• Understanding of observability (Grafana, Prometheus) and alerting tools (PagerDuty, New Relic).

We'd love to get to know you better!
Benefits
We Offer

• Fun, happy and politics-free work culture built on the principles of lean and self organisation;
• Work with large scale systems powering global businesses;
• Competitive salary and benefits.

About Mindera
At Mindera we use technology to build products we are proud of, with people we love.
Software Engineering Applications, including Web and Mobile, are at the core of what we do at Mindera.
We partner with our clients, to understand their product and deliver high performance, resilient and scalable software systems that create an impact in their users and businesses across the world.
You get to work with a bunch of great people, where the whole team owns the project together.
Our culture reflects our lean and self-organisation attitude. We encourage our colleagues to take risks, make decisions, work in a collaborative way and talk to everyone to enhance communication.
We are proud of our work and we love to learn all and everything while navigating through an Agile, Lean and collaborative environment.
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Our offices are located: Aveiro, Portugal | Porto, Portugal | Leicester, UK | San Diego, USA | San Francisco, USA | Chennai, India | Bengaluru, India

Skills Required