Full Stack Engineer – POS

Confiz Limited; Seattle, Northern (WA, KY); Hybrid; USD 120,000 - 170,000; Full time

Job summary

Confiz Limited in Seattle is seeking an experienced full-stack engineer to develop and scale a modern POS system. You will work across a distributed system, delivering frontend web applications with React.js and backend microservices in Java/Spring Boot, deployed on AWS with Kubernetes.

The role is hybrid in Seattle with onsite four days a week (Mon–Thu) and remote Fridays, working 9:00 am–6:00 pm PT. You will mentor junior engineers and collaborate closely with product owners to drive value.

Qualifications

• Strong knowledge of Java 8+ and Spring Boot, React.js, JavaScript/TypeScript, and CSS.
• Proficiency with Docker, Kubernetes, and Git.
• Experience with API development, API Gateway & load balancer configurations, and microservice patterns.
• Experience with AWS services (RDS, ECS, EKS, DynamoDB).
• Strong understanding of AWS multi-region architectures for HA and DR.

Responsibilities

• Backend Development: design, develop, and maintain RESTful microservices using Java 8+ and Spring Boot, deployed to Kubernetes in the cloud.
• Frontend Development: build responsive web applications using React.js, JavaScript/TypeScript, and CSS for POS experience.
• AWS Multi-Region Deployment: architect solutions leveraging AWS multi-region capabilities for high availability and DR.
• System Thinking: ensure production readiness with maintainability and testability.
• Design and Prototyping: lead design and prototyping of solutions and define team standards.
• Telemetry and Monitoring: implement monitoring to detect issues before customer impact.
• Collaboration: work with cross-functional teams, mentor engineers, drive continuous improvement.
• Delivery and Quality: deliver valuable features and address architectural deficiencies.

Skills

Java 8+ / Spring Boot

React.js / TypeScript

AWS multi-region

API development

Docker / Kubernetes

Git

Mentoring juniors

Tools

Docker

Kubernetes

Git

Terraform

Job description

One of Confiz’s largest retail clients is on mission to enhance the selling experience for their salespeople across more than 350 stores. The POS+ team is dedicated to building and maintaining next generation Point of Sale (POS) system to provide seamless customer experiences, improved transaction security, and cutting-edge technology. The new system integrates a React-based frontend web application with Java RESTful microservices backend hosted on AWS for scalable and resilient operations.

We are seeking an experienced Engineer to join our POS+ team. This role is an excellent opportunity for a skilled full-stack engineer to develop the systems to shape the future of our modern Point-of-Sale system at scale. You will work across a distributed system and a network of devices, contributing to large-scale frontend web application with distributed microservices development that enhances the in-store experience.

This is a hybrid role based in Seattle, WA.

Onsite presence of 4 days per week is expected Monday through Thursday, Remote Fridays

Work Schedule: 9:00 am - 6:00 pm Pacific

Responsibilities

• Backend Development: Design, develop, and maintain RESTful microservices using Java 8+ and Spring Boot, deploying to Kubernetes in the cloud.
• Frontend Development: Build highly responsive and scalable web applications using React.js, JavaScript/TypeScript, and CSS, enhancing the point-of-sale user experience.
• AWS Multi-Region Deployment: Architect and implement solutions leveraging AWS multi-region capabilities to ensure high availability, scalability, and disaster recovery.
• System Thinking: Consider how your code behaves in production, focusing on maintainability, testability, and supportability.
• Design and Prototyping: Lead the design and prototyping of solutions, setting the path and standards for the team.
• Telemetry and Monitoring: Implement monitoring solutions to proactively detect and address potential issues before they impact customers.
• Collaboration: Work closely with cross-functional teams, mentor junior engineers, and contribute to a culture of continuous improvement.
• Delivery and Quality: Consistently deliver valuable features and address design or architectural deficiencies.

Qualifications

• In-depth knowledge of Java 8+, Spring Boot, React.js, JavaScript/TypeScript, and CSS.
• Proficiency with Docker, Kubernetes, and Git.
• Experience with API development, API Gateway & load balancer configurations, and microservice patterns.
• Experience with AWS services (e.g., RDS, ECS, EKS, DynamoDB).
• Strong understanding of AWS multi-region architectures, including setting up services across multiple AWS regions for high availability and disaster recovery.

Preferred to have

• Experience with global load balancing, data replication strategies, and failover mechanisms in a multi-region setup.
• Familiarity with AWS services like Route 53, CloudFront, Global Accelerator, and how they facilitate multi-region deployments.
• Knowledge of data consistency models and synchronization across regions, including eventual consistency and conflict resolution strategies.
• Experience with Kafka, and NoSQL databases.

Design Skills:

• Ability to apply appropriate design patterns and principles (e.g., SOLID, CQRS, eventual consistency).
• Preferred experience in designing for performance, scalability, and distributed architecture.
• Proficient in modeling problem domains and anticipating future changes.

Development Practices:

• Advocate for automation in testing, deployment, and security scanning.
• Experience building and optimizing CI/CD pipelines.
• Strong understanding of test-driven development (TDD) and comfortable with the TDD cycle.

Infrastructure Knowledge:

• Ability to automate and build Infrastructure as code with Terraform scripts.
• Proficient with multiple operating systems and scripting techniques.
• Expertise in one or more databases and understanding of various data storage paradigms.

Security Awareness:

• Commitment to writing secure code by default.
• Experience with security tools and practices, including deep security probes and server hardening.

Soft Skills:

• Strong leadership in group discussions, design sessions, and presentations.
• Proven ability to mentor and develop team members.
• Excellent collaboration skills with the ability to drive value with product owners.
• Innovative mindset with the ability to evaluate and introduce new tools and methodologies.

We have a global team of amazing individuals working on highly innovative enterprise projects & products. Our customer base includes Fortune 100 retail and CPG companies, leading store chains, fast growth fintech, and multiple Silicon Valley startups. What makes Confiz stand out is our focus on processes and culture. Confiz is ISO 9001:2015 (QMS), ISO 27001:2022 (ISMS), ISO 20000-1:2018 (ITSM) and ISO 14001:2015 (EMS) Certified. We have a vibrant culture of learning via collaboration and making workplace fun.

People who work with us work with cutting-edge technologies while contributing success to the company as well as to themselves.

To know more about Confiz, visit: https://www.linkedin.com/company/confiz/