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Check out a sample of the 10 Business Logic Layer jobs posted on Upwork

Reverse Engineer | Long-term partnership Fixed-price ‐ Posted 23 days ago

$500
Fixed-price

Intermediate
Experience level

I need a developer who is into reverse engineering for a long-term partnership. I've got a few codes that I need to deploy, connect the…

Business Logic Layer Couchbase Server Laravel Kubernetes Keras Java Persistence API Joomla Jenkins JDBC Java Servlet API JasperReports Hibernate Gradle GoCD GitLab Flask Entity Framework EJB Drupal Docker Dash CodeIgniter Content Management System CakePHP Bitbucket Atlassian Bamboo ASP.NET Core Apache Subversion Apache Maven Apache Log4j Apache Camel Apache Airflow Ansible Akka ADO.NET TensorFlow Python Scikit-Learn PyTorch pandas Apache Spark Spring Framework SaaS JUnit Django .NET Compact Framework Amazon Web Services Scrapy Jakarta Server Pages Jakarta Server Faces HTTP Git ASP.NET MVC ASP.NET .NET Framework Google Analytics Visual Basic Transact-SQL Rust Perl GraphQL Golang F# Erlang Delphi Dart Clojure ASP Apache Groovy Elixir C++ C# TypeScript SQL Ruby PHP Scala Kotlin Java Requirements Specification Python Script PHP Script Infrastructure as Code Automated Deployment Pipeline Data Access Layer Business Logic Layer Jobs Web Service Software Architecture & Design Database Design Database Architecture Database Web Development RESTful API API Integration CSS React HTML JavaScript API Python
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Backend Developer - NodeJS or SpringBoot Hourly ‐ Posted 1 month ago

30+ hrs/week
Hours needed

3 to 6 months
Duration

Intermediate
Experience level

**Job Title: Backend Java Developer - Mobile Application** **Job Description:** We are seeking a skilled Backend Java Developer to jo…

Business Logic Layer User Authentication Heroku API Business Logic Layer Jobs MongoDB Node.js RESTful API PostgreSQL Java Spring Boot
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Elastic Search - Kafka -Notifications
New
Fixed-price ‐ Posted 7 hours ago

$225
Fixed-price

Expert
Experience level

Adding on to previous project framework new service that support 1. end-user API calls into ElasticSearch 2. sync kafka connector for e…

Business Logic Layer Apache Kafka Kibana Java Elasticsearch Business Logic Layer Jobs Data Access Layer Web Service RESTful API API
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Less than 30 hrs/week
Hours needed

More than 6 months
Duration

Expert
Experience level

We are interested in finding a senior lead Java developer to take charge of certain tasks for our marketplace mobile app, web app and t…

Business Logic Layer RESTful API Java PostgreSQL Programming API PostgreSQL Mobile App Development Elasticsearch Business Logic Layer Jobs Web Service Apache Tomcat Requirements Specification Software Architecture & Design Database Design Database Architecture Database
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Python Back End Developer Hourly ‐ Posted 17 days ago

Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Intermediate
Experience level

We are seeking a highly skilled and experienced Python Back End Developer to join our dynamic team. This role is ideal for a proactive…

Business Logic Layer Database RESTful API Python GitHub Docker Transact-SQL Data Access Layer Business Logic Layer Jobs Microsoft SQL Server
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Backend Developer Hourly ‐ Posted 10 days ago

Less than 30 hrs/week
Hours needed

3 to 6 months
Duration

Expert
Experience level

Responsibilities Design, develop, and maintain efficient, reusable, and reliable code using .NET Core. Implement cloud-based solutions…

Business Logic Layer Web Development RESTful API Software Architecture & Design API Business Logic Layer Jobs Web Service
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Backend Developer Hourly ‐ Posted 29 days ago

Hours to be determined
Hours needed

More than 6 months
Duration

Intermediate
Experience level

Responsibilities: 1. Well-Structured Backend Code: Develop and maintain clean, modular, and well-documented backend code.…

Business Logic Layer Web Development MySQL JavaScript RESTful API API Database Design Business Logic Layer Jobs Database Architecture Software Architecture & Design PostgreSQL
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Less than 30 hrs/week
Hours needed

More than 6 months
Duration

Expert
Experience level

We are interested in finding a senior lead Java developer to take charge of certain tasks for our marketplace mobile app, web app and t…

Business Logic Layer RESTful API Java PostgreSQL Programming API PostgreSQL Mobile App Development Elasticsearch Business Logic Layer Jobs Web Service Apache Tomcat Requirements Specification Software Architecture & Design Database Design Database Architecture Database
See more

30+ hrs/week
Hours needed

3 to 6 months
Duration

Expert
Experience level

I am looking for a back end focused mobile app developer to manage api integration with maps/spotify/potentially social media. This app…

Business Logic Layer API Integration API Development Python Business Logic Layer Jobs SQLite Git Database Design Database Architecture PostgreSQL Azure Cosmos DB
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Back-End Development Fixed-price ‐ Posted 9 days ago

$500
Fixed-price

Expert
Experience level

We are looking for an experienced backend expert. Attached are Figma Screens of the backend that you will build. This is a complete bac…

Business Logic Layer API Database Java API Development Database Architecture Business Logic Layer Jobs PostgreSQL
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