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Sr. Java Backend Developer

NetOrbitWilmington, DE🇺🇸United StatesPosted 14 Aug 2026

Quick Overview

Work Type
Hybrid
Level
Mid Senior

Job Description

Sr. Java Developer
Wilmington, DE/NYC/Atlanta, GA

Need resumes. Resource with 10-15 years hands on and preferably able to lead teams. Working with distributed systems
Strong Java programming skills
Minimum of 10 years practical software development experience
Robust object-oriented design pattern knowledge and implementation experience using Java; Java Backend Developer
Java Developer - Preferable with Java 1.8 (java 8 features) experience
Advanced knowledge and experience developing and working with relational databases such as Sybase/MySQL
Experience with multi-tier application architecture and high performance distributed and in-memory caching solutions
Strong understanding of data modeling techniques
Working knowledge of building and deploying distributed systems is mandatory
Experience with cloud technologies (e.g., Kubernetes, Docker, OpenStack) a plus

Must Have

Core/OOPS
OOPs Concepts & Patterns
Java Keywords - Static, Final, volatile, synchronized, transient, this super etc.
Constructors
Abstract Classes and Interfaces
Dependency Injection
Exceptions - Checked, Unchecked
Generics
Collections - List, Map, Set
Data Structures & Collections
Concurrency
Multithreading and Synchronization
Non-Blocking Collections/Utilities
Spring Framework:
Spring Core(must)
Spring Data
Misc.
GIT
Maven/Gradle
Design Patterns
Junit/Testing (Version 4+)
Caching In general

Database / ORM
Cursors (Good)
SQL Queries - Inner Outer Joins, Group By, Having (Must)
Stored Procedures (Good have)
Triggers (Good)
Hibernate

Good To Have
IO & Serialization
Memory management - Heap Dump/Thread dump /Memory Tuning
Spring Boot
Messaging - JMS/Queues, Kafka / Cassandra

Web Applications
Angular/TypeScript
JSP / Servlets
Mark-up Languages like XML and JSON
Service Oriented Architecture / Web Services - SOAP / REST / gRPC
Web Frameworks like Struts / Spring
Web Technologies like HTML, CSS, JavaScript and JQuery

Skills

Docker
MySQL
OpenStack
SOAP
SQL
Spring
Spring Boot
Angular
CSS
Cassandra
Git
HTML
Hibernate
JUnit
Java
JavaScript
Kafka
Kubernetes
REST
TypeScript
gRPC
jQuery

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