Back End Developer (Kotlin)

GSD Search, LLC; United States; Remote; USD 80,000 - 100,000; Full time

Job summary

A leading company is seeking a Senior Backend Engineer to join a fast-paced engineering team focused on delivering scalable backend systems for a high-growth digital platform. The ideal candidate will have a strong background in Kotlin, AWS, and experience in building concurrent systems. This long-term contract offers a high likelihood of full-time conversion and is open to U.S. citizens or Green Card holders.

Benefits

Medical insurance

Vision insurance

Qualifications

• 5+ years of experience as a backend engineer.
• Strong proficiency in Kotlin or JVM-based languages.
• Experience with AWS and containerized infrastructure.

Responsibilities

• Design and develop scalable backend services using Kotlin.
• Build and maintain APIs for user-facing applications.
• Drive architectural decisions to support growth.

Skills

Kotlin

AWS

PostgreSQL

Asynchronous programming

Concurrent systems

Tools

CI/CD pipelines

Job description

This range is provided by GSD Search, LLC. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

$65.00/hr - $85.00/hr

Direct message the job poster from GSD Search, LLC

(Long‑Term Contract with High Likelihood of Full‑Time Conversion)

Status: W‑2 contract (12–18 months) — strong intent to hire permanently

Work eligibility: U.S. Citizen or Green Card holder (no C2C or visa sponsorship)

Location: Remote (ideally EST or CST)

About the Role

We are seeking a Senior Backend Engineer to join a fast-paced, product-focused engineering team responsible for delivering scalable backend systems for a high-growth digital platform. This role is ideal for someone who enjoys solving complex problems, working in a lean environment, and contributing to systems that are built for scale.

Responsibilities

• Design and develop scalable, concurrent backend services using Kotlin and the JVM ecosystem
• Build and maintain APIs that support user-facing applications
• Work cross-functionally with product managers, frontend engineers, and QA to deliver features end-to-end
• Drive architectural decisions that support scale (10x–100x growth)
• Utilize AWS services for deployment, monitoring, and performance optimization
• Write clean, maintainable code and participate in peer reviews
• Embrace a culture of ownership, continuous learning, and improvement

Requirements

• 5+ years of experience as a backend engineer with strong proficiency in Kotlin or other JVM-based languages
• Demonstrated experience building asynchronous and concurrent systems
• Hands-on experience with AWS and containerized infrastructure
• Strong knowledge of PostgreSQL or similar relational databases
• Ability to operate independently, communicate clearly, and collaborate in a distributed environment
• Startup or growth-stage experience preferred — comfortable with ambiguity and fast iteration cycles

Nice to Have

• Familiarity with CI/CD pipelines and tools such as Argo CD or similar
• Experience working with teams using Playwright or modern frontend automation frameworks
• Background in regulated industries such as financial services or healthcare

What’s in It for You

• Join a forward-thinking team building modern backend architecture
• Opportunity to shape systems built for performance and growth
• Work with collaborative teams that value ownership, low ego, and smart execution

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Contract

Job function

• Job function

  Information Technology

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Inferred from the description for this job

Medical insurance

Vision insurance

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