Back End Developer

KMM Technologies, Inc.; Rockville (MD); On-site; USD 150,000 - 210,000; Full time

Job summary

KMM Technologies, Inc. in Rockville, MD is seeking a Senior Backend Engineer to design and optimize scalable services with a strong focus on reliability and performance. This role demands hands-on coding, solid database skills, and collaboration with cross-functional teams onsite.

You will work with RESTful APIs, big data stacks, AWS services, and CI/CD tooling to deliver robust backend solutions. Leadership experience and a disciplined approach to validating output are essential.

Qualifications

• Bachelor’s degree in computer science or related field.
• 8+ years of professional software engineering with leadership.
• 2+ years REST/web services and SQL for relational databases.
• 3+ years with Hadoop, Spark, or Presto.
• Proven AWS experience: EMR, ECS, Lambda, and S3.
• CI/CD with Jenkins and CloudFormation.
• Scripting in Unix Shell or Python.
• Experience with LLM-based coding tools and validation discipline.

Skills

REST Web services

SQL queries

Big data technologies

AWS (EMR, Hive/Presto, ECS, Lambda, S3

CI/CD (Jenkins, CloudFormation)

Unix Shell / Python

LLM-based coding tools validation

Leadership experience

Education

Bachelor's degree in CS/IT/Engineering

Job description

RQ00203 - Senior Backend Engineer at Rockville, MD-3 days onsite and F2F is a Must

Required Qualifications:

• Bachelor’s degree in computer science, Information Technology, Engineering, or related technical field
• 8+ years of professional software engineering experience with demonstrated leadership capabilities
• 2+ years developing REST/web services and writing complex SQL queries for relational databases
• 3+ years working with big data technologies such as Hadoop, Spark, or Presto
• Proven experience with AWS services including EMR (Hive/Presto), ECS, Lambda, and S3
• Proficiency with DevOps practices and CI/CD pipelines using tools like Jenkins and CloudFormation
• Working knowledge of scripting languages including Unix Shell or Python
• Experience using LLM-based coding tools with a disciplined approach to validating output — you don't merge what you can't explain