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# Senior Kotlin/Spring Boot Engineer

- **Company:** SolutionIT, Inc.
- **Location:** Phoenix, AZ, United States
- **Experience:** Expert
- **Salary:** $141,440.0 - $162,240.0
- **Contract:** Temporary to permanent
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Software Debugging, Distributed Systems, Fault Tolerance, Gradle, Hibernate (Java), Java Persistence API, Python (Programming Language), PostgreSQL, OAuth, Large Language Models, Grafana, Spring-boot, Backend, Fastapi, Kotlin, Integration Tests, Codebase, Api Design, Docker
- **Published:** August 10, 2026
- **Apply:** https://www.careerjet.com/jobad/usf29e4ec467ecda2040e6cbc2674bda47

## About the Role

* Strong production Kotlin backend experience.
 * Strong Spring Boot experience in distributed systems or platform services.
 * Hands-on Temporal experience in production.
 * Strong understanding of workflow durability, retries, idempotency, and recovery design.
 * Experience with multi-module Gradle codebases and contract-first API design.
 * Experience with JPA/Hibernate and PostgreSQL.
 * Experience with Docker Compose/Test containers integration testing.
 * Comfort debugging multi-service systems with mixed Kotlin and Python components.
 * Experience with observability tools like micrometer
 * Experience with contract first development

Strong Pluses:

 * Experience with DAG/workflow/orchestration engines.
 * Experience with AI/LLM/agent runtimes or other non-deterministic execution systems.
 * Familiarity with FastAPI-based workers and cross-language integration.
 * Experience with auth/token provider abstractions, OAuth2/JWT, or cached token acquisition.
 * Experience writing operational docs, runbooks, and reliability guidance.

## Description

* Design and harden the Kotlin/Spring Boot runtime that executes workflow graphs reliably in production.
 * Implement and improve Temporal.io workflows, activities, signals, queries, retries, and recovery paths.
 * Strengthen contract-first APIs and shared contracts.
 * Own failure-mode thinking across distributed execution retries, idempotency, partial failure, replay safety, pause/resume, and graceful degradation.
 * Work across node types, including HTTP, agentic tool-calling, LLM, and human-in-the-loop review nodes.
 * Improve integration coverage using Test containers and layered Docker Compose profiles.
 * Collaborate closely with Composer and AI/KB teams on execution semantics and runtime behavior.
 * Write clear operational documentation and runbooks for a reliability-critical service., Senior Pipe Stress Engineer | Phoenix, AZ (Hybrid) Location: Phoenix, AZ. This role requires being on a client job site in the Ocotillo area a minimum of 2 days per week. About…
 + 5 days ago
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