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Freelance Remote Java Engineer Jobs in Missouri (NOW HIRING)

* This role is 100% remote but candidates in the Greater STL/IL area are preferred due to customer ... Java or Python * 2+ years of experience with designing, deploying, and operating real-time, low ...

Experience in Java and JEE development, Spring Boot, Spring MVC, Spring Batch, Spring Security ... Familiarity and experience with XP (Extreme Programming) Essential Functions The requirements ...

This is a remote position, which requires regular travel to client sites Monday - Friday. We ... Strong knowledge of one or more programming languages such as JAVA, C++, C, C#, Objective-C, Python ...

Xamarin, Swift, Objective C, Java. * Database Development: Maintains knowledge and skills in ... Remote in the USA Only * Contract-to-Hire 3-6 months * Must be US-Citizen or Green-Card only * Will ...

Remote Reference ID: JN -052026-107129 Date Posted: 05/26/2026 Shortcut: * Description ... Java, Spring Boot, Spring/JPA, Hibernate/MyBatis, JBoss/Fuse Camel/AMQ, SQL, Oracle, REST services.

SR. SOFTWARE ENGINEER

Saint Louis, MO · Remote

$119K - $157K/yr

Xamarin, Swift, Objective C, Java. * Database Development: Maintains knowledge and skills in ... Remote in the USA Only * Contract-to-Hire 3-6 months * Must be US-Citizen or Green-Card only * Will ...

.Net/Blazor Developer

Saint Louis, MO · On-site +1

$47 - $62/hr

This job has remote capabilities dependent on work experience and customer needs. Note: This ... Java Script, JQuery, Node.js and CSS. * Design and develop using appropriate software design ...

Strong proficiency in Go, with additional experience in languages such as Python, Java, or C ... Fully remote-friendly environment with flexibility in work location. * High ownership role within a ...

Proficiency in Programming language - Java Spring boot with Apache Camel, Go and Python * Hands on ... S.-based remote role.* We're committed to creating a connected, collaborative culture, no matter ...

Strong proficiency in Go, with additional experience in languages such as Python, Java, or C ... Fully remote-friendly environment with flexibility in working location. * High ownership role ...

This is a remote position with a strong preference for candidates in the Atlanta metropolitan area ... Programming familiarity in at least one language (Python, JavaScript, Java, or C#). Ability to read ...

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Freelance Remote Java Engineer information

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Infographic showing various Freelance Remote Java Engineer job openings in Missouri as of June 2026, with employment types broken down into 96% Full Time, 1% Part Time, and 3% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution.

API Engineer

aqua IT

Remote

Full-time

Posted 8 days ago


Job description

* This role is 100% remote but candidates in the Greater STL/IL area are preferred due to customer location *


Overview: This position is responsible for designing, deploying, and optimizing robust API platforms for efficient data exchange, system integrations, and secure communication; strong skills in backend or platform engineering and API design are essential

Required Qualifications

  • 3+ years of experience in backend or platform engineering, including distributed systems and API design
  • 3+ years of experience in software development using Java or Python
  • 2+ years of experience with designing, deploying, and operating real-time, low-latency API platforms at scale such as Apigee, Gravitee, Kong, AWS API Gateway, or Mulesoft
  • 1+ years of experience with DevOps practices and technologies, including Docker, Helm, Kubernetes, and GitOps workflows; Experience with protocols, including HTTP, gRPC, or WebSockets, caching, load balancing, and API security
  • Experience with AWS, Azure, or GCP
  • Experience with Git and collaboration tools, including Jenkins, JIRA, Confluence, Nexus, or Bitbucket
  • Experience in gathering requirements and engaging with clients
  • Secret clearance
  • HS Diploma or GED

Desired Qualifications

  • Experience with SQL, Server-Side Development, Middleware, Application or Data Integration, API Development, Core Application Systems, Node.js, Groovy, Scala, Spring Cloud, Spring Core, Spring-Boot, or Spring Data
  • Experience with using a message broker, such as Kafka or RabbitMQ