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Senior Java Web Developer

The **Senior Java Spring MicroServices Engineer **will be joining renowned IT teams with highly-skilled, collaborative senior application developers using cutting edge technology to design, modify, and build highly sophisticated transactional systems. Our client – with whom we are a strategic partner – is architecting a new payments system from the ground up to provide the customer and business a more efficient and flexible core capability.

As a senior member of the payments modernization project you will help design an efficient, multi-tiered transactional system capable of processing current forms of payments and engineered to be flexible enough to adapt to tomorrow's forms of payments. As a Senior Engineer you will utilize solid storage, integration and systems engineering experience to deliver cutting-edge software components and help mentor junior engineers to do the same.

Client environment

  • Highly collaborative, putting our heads together when solving difficult problems

  • Produce quality system components and strive for zero production incidents

  • Automate away the grunt work where possible so engineers can focus on more meaningful work

  • Apply standard design patterns and secure best practices

  • Use a variety of cutting edge technologies: Kafka, Elastic Search, document db, and more

Key Activities

  • Design, develop, implement, document, and test changes to an application subsystem

  • Design, develop, implement, document, and test changes to an application microservice

  • Recommend and create new software development, testing and documentation standards

  • Resolve with escalated software application issues.

  • Organize activities to develop and execute plans to lessen occurrence and reoccurrence of production issues

  • Conduct root cause analysis to recognize permanent resolutions to software or business process issues

  • Analyze, diagnose and propose solutions to application or business process issues

  • Provide technical oversight and guidance on technical projects on a variety of application platforms


  • 5+ years of hands-on experience developing web infrastructure components

  • 5+ years of experience analyzing, designing, hands on coding, testing and maintaining complex software applications/systems

  • 3+ years of hands-on experience with cloud platforms (AWS, GCP, Azure)

  • 3+ years development experience in a Java/microservice/Spring environment

  • Passion and ability to write clean, readable, well-designed code/scripts along with tests

  • Understand how to balance technical concerns with business constraints

  • Thrive in an environment that favors teamwork, participate in code reviews, and follow a development lifecycle

  • Continuously learn and apply new tools and techniques

  • Continuously looking for ways to improve the team and reduce waste in the project

  • Have experience with any of the following: Domain Driven Design (DDD), Test Driven Development (TDD), Event Sourcing, DevOps, Docker, Kubernetes, messaging middleware (i.e., Kafka, SQS), secure coding, performance tuning, scaling

  • Degree in Engineering or Computer Science preferred

  • Experience in the payments industry and/or developing high-volume transactional systems is a plus

  • Architecting and building service APIs is a plus


Seattle, WA

About Kalles Group

Kalles Group is a consulting and solutions firm that specializes in cybersecurity, business and information technology services. We combine a focus on alignment with domain expertise to deliver pragmatic results with a purposeful experience for our customers and consultants.

Kalles Group is a platform for you to become someone better through your work.

Next Steps

No needless hoops to jump through, apply today or email a resume to chrisa@kallesgroup.com.