Senior Backend Developer jobs in United States
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KellyMitchell Group · 5 hours ago

Senior Backend Developer

positionLake Buena Vista, FL
timeContract
remoteOnsite
senioritySenior Level
money$49/hr - $70/hr
date5+ years exp

KellyMitchell Group is seeking a Senior Backend Developer to join their team in Lake Buena Vista, Florida. The role involves designing, developing, and maintaining backend services, ensuring reliable backend-to-frontend integrations, and collaborating with engineers and stakeholders.

Human ResourcesInformation TechnologyStaffing Agency
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H1B Sponsor Likelynote

Responsibilities

Design, develop, and maintain backend services using Java 17+, Node.js, and TypeScript/JavaScript
Build and operate AWS Lambda–based services and integrate with cloud-native systems
Develop and maintain internal admin tools using NestJS and Vue.js to support device configuration and portal management
Design and maintain RESTful APIs and ensure reliable backend-to-frontend integrations
Write clean, well-structured, and thoroughly tested code
Document technical solutions and architectural decisions
Participate in code reviews, story estimation, sprint ceremonies, and team demos
Troubleshoot, debug, and optimize backend systems to ensure performance, scalability, and reliability
Act as an independent contributor while collaborating effectively with engineers, product partners, and stakeholders
Share concrete examples of previous work and technical contributions

Qualification

Java 17+Node.jsAWS LambdaRESTful APIsTypeScriptJavaScriptNestJSVue.jsAgile/ScrumData modelingOpen-source contributionsProblem-solvingCommunicationCollaboration

Required

Bachelor's degree in Computer Science, Engineering, or a related field
5+ years of professional backend development experience, preferably in enterprise or production-scale environments
Strong experience with Java 17+, Node.js, TypeScript, and JavaScript (fundamentals required)
Hands-on experience with AWS Lambda and cloud-based microservice architectures
Proven experience building and maintaining enterprise-scale digital platforms
Familiarity with NestJS, Vue.js, or comparable backend/frontend frameworks
Solid understanding of object-oriented design, RESTful API development, and data modeling
Experience working with relational and non-relational databases
Experience working in Agile/Scrum environments
Strong problem-solving and debugging skills, with the ability to explain technical decisions and outcomes
Excellent communication and collaboration skills, with a team-first mindset

Preferred

Experience with DynamoDB or other NoSQL data stores
Familiarity with IoT systems, messaging queues, or event-driven cloud architectures
Experience contributing to or maintaining open-source or internal libraries

Benefits

Medical, Dental, & Vision Insurance Plans
Employee-Owned Profit Sharing (ESOP)
401K offered

Company

KellyMitchell Group

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KellyMitchell is a HR firm for IT and technical staffing for organizations globally.
dateFounded in 1998
location
St Louis, Missouri, USA
people-size1001-5000 employees
web-link
https://www.kellymitchell.com

H1B Sponsorship

KellyMitchell Group has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (2)
2021 (2)
2020 (2)

Funding

Current Stage
Late Stage

Leadership Team

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Cassandra Sanford
CEO and Owner
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Gina Chisholm
Vice President - Business Operations
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Company data provided by crunchbase