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Java with Kotlin

UNICOM TECHNOLOGIES INCUnited States🇺🇸United StatesPosted 6 Aug 2026

Quick Overview

Work Type
Remote
Level
Mid Senior

Job Description

Title: Software Engineer - Java with Kotlin

Only GC & Citizens

100% Remote

# of Openings: 3

Position Type: Contract to Hire

Locations: Louisville, KY

Additional Details:

6 months CTH role

Only on W2



Description:

Summary:

As a Senior Software Engineer on the Fulfillment Team, you will play a critical role in designing, building, and scaling the core systems that enable order fulfillment. You will work closely with product managers, architects, and cross-functional teams to deliver highly reliable, performant, and extensible software that supports tens of thousands of restaurants and millions of customers globally.

Responsibilities:

  • Design, develop, and maintain scalable, high-availability backend services supporting order fulfillment and delivery workflows.
  • Lead technical design and drive architecture decisions for cloud-native, distributed, event-driven systems.
  • Build APIs and event-driven services integrating with POS, kitchen systems, delivery platforms, and external partners.
  • Own services end-to-end (design, implementation, deployment, observability, and reliability).
  • Write clean, maintainable, and well-tested code while promoting engineering best practices.
  • Provide technical leadership through code reviews, mentoring, knowledge sharing and contributing to refinement of engineering standards.
  • Collaborate with external vendors and internal Product, QA, DevOps, development teams and Business Operations teams to deliver resilient, impactful solutions.
  • Troubleshoot and resolve complex production issues with a focus on performance, scalability, and reliability.
  • Participate in on-call rotations and lead incident response for critical systems.

Requirements:

  • 3-5 years of software engineering experience building secure, scalable backend and/or distributed systems and leading software development teams.
  • Proven experience designing and operating high-scale, cloud-native microservices in production.
  • Strong proficiency in backend Java and Spring Boot.
  • Experience designing and consuming RESTful APIs and event-driven architectures.
  • Hands-on experience with cloud platforms (Google Cloud Platform preferred).
  • Strong understanding of databases, messaging systems, and caching strategies.
  • Excellent problem-solving skills and sense of ownership.
  • Proven track record for designing/creating quality solutions with minimal input.
  • Strong communication skills and ability to influence technical direction.
  • Experience with Agile methodologies.

Required Skills:

  • Backend: Java 17-25, Spring Boot 3, some Python/JS.
  • Cloud Platform: Google Cloud Platform (Cloud Run, Pub/Sub, Firestore, GKEE, GSM, etc).
  • Architecture: Event-driven microservices, asynchronous processing, webhook ingestion, RESTful APIs.
  • Infrastructure: Terraform, GKE and serverless deployments.
  • Data & Messaging: Firestore (NoSQL), Spanner, MySQL, Pub/Sub, HTTP APIs.
  • Observability: Splunk (logging/search), AppDynamics (APM), structured logging with MDC.
  • Build & CI/CD: Gradle, Jib, Jenkins/Harness pipelines.
  • Integrations: POS systems, delivery platforms, external vendor APIs.
  • Tools: Jira, Lucid, Confluence, BitBucket, Gemini (for AI).

Preferred Skills:

  • Experience in eCommerce, fulfillment, delivery, or restaurant technology domains.
  • Familiarity with microservices, Docker, and Kubernetes.
  • Experience with CI/CD pipelines and infrastructure-as-code (e.g. Terraform, Jenkins, Harness).
  • Knowledge of POS systems.
  • Experience supporting mission-critical systems with strict uptime, latency, and SLA requirements.
  • Experience with AI tools and technology.
  • Python experience.

Benefits:

Details about benefits can be provided here, such as health insurance, retirement plans, flexible working hours, and professional development opportunities.

Skills

Docker
Firestore
Microservices
MySQL
Spring
Spring Boot
Splunk
Agile
Confluence
Google Cloud
HTTP
Java
Jenkins
Jira
Kotlin
Kubernetes
POS Systems
Python
Terraform

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