CrawlJobs Logo

Back End Developer

https://www.roberthalf.com Logo

Robert Half

Location Icon

Location:
United States , De Pere

Category Icon
Category:
IT - Software Development

Job Type Icon

Contract Type:
Employment contract, B2B, Contract work

Salary Icon

Salary:

Not provided
Save Job
Save Icon
Apply Position

Job Description:

This role involves maintaining our software ecosystem and playing a significant part in its development. The successful individual will be responsible for server-side technologies, database design, system integration, and performance optimization. This opportunity offers a contract to permanent employment.

Job Responsibility:

  • Write efficient and scalable server-side code focusing on Go (Golang) as the primary programming language
  • Design, implement, and maintain both relational (such as MySQL, PostgreSQL) and non-relational (like MongoDB) databases for reliable data storage and retrieval
  • Integrate third-party services including payment gateways, authentication solutions, and APIs for LTE device management with providers such as Verizon and AT& T
  • Identify and resolve performance bottlenecks in code, queries, and server configurations to optimize application scalability and responsiveness
  • Implement security practices that adhere to industry standards, including authentication, authorization, and data encryption, to ensure system integrity and the safe handling of sensitive information
  • Manage and maintain cloud-based environments using platforms like AWS, including services for hosting user image repositories and backend processing
  • Collaborate with stakeholders and team members to determine whether to optimize and reuse legacy code or develop fresh solutions tailored to current needs
  • Support systems and features including Go Programming, PHP/Java/ Ruby C# or similar back end language, SQL/ PostgreSQL- AWS

Requirements:

  • A minimum of 5 years of experience in backend development in the hospitality industry
  • Proven track record of bug tracking and resolution
  • Proficiency in client-side scripting
  • Experience with cross-platform application development
  • Demonstrated ability to conduct AB testing
  • Expertise in API development
  • Proficiency in Go programming language
  • Experience in PHP development
  • Strong skills in Python scripting
  • Demonstrated experience with Microsoft SQL
  • Proficient in PostgreSQL
What we offer:
  • medical, vision, dental, and life and disability insurance
  • eligibility to enroll in our company 401(k) plan

Additional Information:

Job Posted:
March 24, 2025

Employment Type:
Fulltime
Work Type:
On-site work
Icon
Robert Half - All Job Offers
Job Link Share:
Copy Link Icon
Facebook Icon Twitter Icon LinkedIn Icon

Looking for more opportunities? Search for other job offers that match your skills and interests.

Briefcase Icon

Similar Jobs for Back End Developer

Back-End Senior Developer

We are looking for a highly talented and motivated senior engineer to join our R...
Location
Location
United States , Scottsdale, Arizona
Salary
Salary:
Not provided
skyrepublic.com Logo
Sky Republic
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years’ experience in back-end software development
  • Desire and ability to rapidly learn new technologies, put them in practice with tough deadlines, and work through challenging problems
  • Proficient with agile (Scrum/Kanban/XP) software development methodology and continuous delivery techniques and tools (Jenkins, Git, Jira etc.)
  • Familiar with cloud service development ecosystem (Amazon AWS, Google Cloud Platform, Microsoft Azure)
  • Practical development experience with some of the following technologies: Concurrent and strongly typed programming language such as Golang (preferred), C++, Java
  • REST API and JSON schemas
  • Linux container technologies (Docker, Kubernetes, etc.)
  • SQL databases (PostgreSQL, MySQL, Oracle)
  • Information Security concept and cryptography theory
  • Middleware software technologies (Apache Service Mix, IBM WebSphere, Mulesoft, WSO2 etc.)
Job Responsibility
Job Responsibility
  • Contribute to a highly creative and experienced team in an agile and collaborative environment
  • Participate in all phases of development including design, coding, deployment, testing, documentation and maintenance of Sky Republic solutions
  • Apply software development best practices such as unit testing, code review, test automation and continuous delivery to produce high quality software
  • Work with various stakeholders and customers to develop the Sky Republic offering and ensure its adoption
What we offer
What we offer
  • Attractive compensation (salary + bonus + equity)
  • Medical, Dental, Vision, 401K
  • Flexible working hours
  • Fulltime
Read More
Arrow Right

Senior Back End Developer

As a Senior Back-End Developer, you will be a key contributor to the design, dev...
Location
Location
United States , Boston
Salary
Salary:
Not provided
pixels-360.com Logo
Pixels 360
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s degree in Computer Science, Engineering, or a related field
  • 5 years of experience in back-end development, with proficiency in [mention specific back-end languages, frameworks, and technologies relevant to your stack]
  • Strong understanding of software architecture, design patterns, and best practices
  • Excellent problem-solving skills and attention to detail
  • Excellent communication and collaboration skills
Job Responsibility
Job Responsibility
  • Back-End Development: Design and implement scalable, high-performance server-side applications
  • Database Management: Develop and optimize database schemas, queries, and performance tuning to ensure efficient data storage and retrieval
  • API Development: Build and maintain robust APIs for seamless integration with front-end systems and third-party services
  • Collaboration: Work closely with front-end developers, product managers, and other stakeholders to ensure seamless integration of front-end and back-end components
  • Code Reviews: Conduct and participate in code reviews to maintain code quality, adhere to best practices, and promote knowledge sharing within the team
  • Scalability: Architect and implement solutions that can handle high levels of traffic and data volume, ensuring the scalability of our systems
  • Problem Solving: Identify and address technical challenges, troubleshoot issues, and implement effective solutions
Read More
Arrow Right

Back-end Developer

Location
Location
Salary
Salary:
Not provided
ennova-research.com Logo
Ennova Research
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Excellent knowledge of object-oriented design principles and Web programming
  • Excellent of Java, Java EE, Spring Framework, Hibernate
  • Good knowledge of RDBMS
  • Good knowledge of CI/CD
  • Excellent predisposition to work in teams
  • Excellent problem solving skills
  • Good knowledge of the English language
  • Good knowledge of the Agile methodology
  • Ability to collaborate well with other teams (eg back-end development or UI/UX design)
What we offer
What we offer
  • Professional growth opportunities
  • Training program
  • Teamwork and participation in team building activities
  • A dynamic, young, creative and stimulating environment
  • Open-minded and multicultural work environment
  • Experience with national and international clients
  • Fulltime
Read More
Arrow Right

Senior Software Developer Back End

Our client is looking for a Senior Software Developer Back End for a 12 month co...
Location
Location
Canada , Toronto
Salary
Salary:
Not provided
https://www.randstad.com Logo
Randstad
Expiration Date
February 23, 2026
Flip Icon
Requirements
Requirements
  • 10+ years of experience as a designer and developer in the large-scale multi-client web applications
  • 10+ year of hands-on working experience of Java development with Oracle or SQL database
  • 5+ years of hands-on experience of RestAPI, RESTful WebServices
  • Knowledge of security gateways and protocols (JWT, Oauth2.0, SSL Certificates)
  • Experience in programming and analysis
  • specialized software package support at the specified experience level
  • Ability to collaborate with IT Professionals throughout the Software Development Life Cycle
  • Experience in structured methodologies for the development, design, implementation and maintenance of applications
  • Experience in design, code, test, debug and document applications
  • Experience in the use of object and/or third generation language development tools
Job Responsibility
Job Responsibility
  • Responsible for managing the interchange of data between the server and the users
  • Required to translate technical systems specifications into working, tested applications
  • This includes: developing detailed programming specifications writing and/or generating code compiling data-driven programs maintaining, and conducting unit tests Resolves and troubleshoots technical problems which arise during the use and operation of software packages, including technical assistance in implementation, conversion
What we offer
What we offer
  • Earn a competitive rate within the industry
  • Potential for extension
Read More
Arrow Right

Back End Developer

Perion is a global advertising technology company. We are seeking for an experie...
Location
Location
Israel , Tel Aviv
Salary
Salary:
Not provided
perion.com Logo
Perion
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 2–4 years of backend development experience
  • at least 1–2 years using Go in production
  • solid understanding of distributed systems and performance tuning
  • proficiency in data storage technologies (e.g., Redis, PostgreSQL)
  • familiarity with programmatic advertising concepts (RTB, DSPs, SSPs, OpenRTB) is highly desirable
  • experience with containerization tools like Docker
  • strong understanding of network protocols (HTTP, gRPC) and request handling at scale
Job Responsibility
Job Responsibility
  • Design and implement Go services for ad serving, bidding, auction logic, and user tracking at scale
  • work with real-time data streams, impression logging, and event pipelines
  • optimize systems for performance and throughput
  • build caching layers and efficient data access strategies (e.g., using Redis, Memcached)
  • collaborate with DevOps to ensure scalability, observability, and reliability of deployed systems
  • write unit and integration tests to validate service functionality and performance
Read More
Arrow Right

Java Back End Developer

The Digital S/W Engineer Intmd Analyst is a developing professional role, requir...
Location
Location
India , Chennai; Pune
Salary
Salary:
Not provided
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5-9 years in an Apps Development role
  • strong analytical and quantitative skills
  • experience in running high traffic, distributed, cloud based services
  • experience in affecting large culture change
  • experience leading infrastructure programs
  • skilled at working with third party service providers
  • excellent written and oral communication skills
  • knowledge of Java and Spring Boot
  • financial domain expertise, specialized in payments
  • Bachelor’s/University degree or equivalent experience
Job Responsibility
Job Responsibility
  • Turn tech stack and application design into code on multiple development platforms
  • address a variety of responses to problems, questions, or situations by applying established criteria
  • responsible for applications systems analysis and programming activities
  • accountable for development, design, construction, testing and implementation and write secure, stable, testable and maintainable code
  • engage in digital applications development, risk technology, Middleware, Mainframe applications, Non Mainframe applications, Analytic Model Development and Application support activities
  • provide sound understanding of application development concepts and principles
  • consult with users, clients and other technology groups on issues and recommend programming solutions
  • learn the functionality, architecture, dependencies, and runtime properties of the systems involved with your projects
  • understand business requirements, applications/services, runtime operations and maintenance
  • evaluate system designs and architecture
  • Fulltime
Read More
Arrow Right

Senior Software Developer Back End

Our client is looking for a Senior Software Developer Back End for a 12 month co...
Location
Location
Canada , Toronto
Salary
Salary:
Not provided
https://www.randstad.com Logo
Randstad
Expiration Date
February 23, 2026
Flip Icon
Requirements
Requirements
  • 10+ years of experience as a designer and developer in the large-scale multi-client web applications
  • 10+ years of hands-on working experience of Java development with Oracle or SQL database
  • 5+ years of hands-on experience of RestAPI, RESTful WebServices
  • Knowledge of security gateways and protocols (JWT, Oauth2.0, SSL Certificates)
  • Experience in programming and analysis
  • specialized software package support at the specified experience level
  • Ability to collaborate with IT Professionals throughout the Software Development Life Cycle
  • Experience in structured methodologies for the development, design, implementation and maintenance of applications
  • Experience in design, code, test, debug and document applications
  • Experience in the use of object and/or third generation language development tools
Job Responsibility
Job Responsibility
  • Responsible for managing the interchange of data between the server and the users
  • Required to translate technical systems specifications into working, tested applications
  • This includes: developing detailed programming specifications writing and/or generating code compiling data-driven programs maintaining, and conducting unit tests Resolves and troubleshoots technical problems which arise during the use and operation of software packages, including technical assistance in implementation, conversion
What we offer
What we offer
  • Earn a competitive rate within the industry
  • Potential for extension
Read More
Arrow Right

Senior Software Developer Back End

Our client is looking for a Senior Software Developer Back End for a 4 month con...
Location
Location
Canada , North York
Salary
Salary:
Not provided
https://www.randstad.com Logo
Randstad
Expiration Date
February 19, 2026
Flip Icon
Requirements
Requirements
  • Experience with z/OS V2.2 or higher
  • Expertise using file and database management tools (either File Aid V10.1 or higher, or IBM File Manager V13.1 or higher)
  • Experience with IMS DB V12 or higher (HALDB and DEDB) using the PLITDLI API
  • Experience with DB2 for z/OS V11 or higher
  • 5+ years of experience writing mainframe PL/I transactions that process XML input and produce XML output and consume it
  • Recent experience in using PL/I V4.5 or higher within the last 5 years
Job Responsibility
Job Responsibility
  • Analysis leading to detailed information related to the current system logical and physical design and code structures during the concept phase of project
  • Analysis of technical database requirements leading to definition of changes required to support the new system
  • Interface and arrangements with the DBA/Data Management staff to progress these changes
  • Creation of technical specifications in accordance with the OPS standards
  • Identification of problems/issues along with mitigation strategies
  • Regular status reports on progress made
  • Effective knowledge transfer to RUS and I&IT Cluster staff at all stages of this assignment
  • Report status to and follow overall direction from the Project Manager and/or Lead Technical Coordinator
  • Logical and physical design required to incorporate the required changes
  • JAD sessions / walkthroughs to vet the design and obtain signoff of the technical specifications
What we offer
What we offer
  • Earn a competitive rate within the industry
  • Potential for extension
Read More
Arrow Right
Jobs by Category
Art and Entertainment Jobs Banking Jobs Call Center Jobs Construction Jobs Consulting Jobs Customer Service Jobs Education Jobs Energy Jobs Finance Jobs Gastronomy Jobs Health and Beauty Jobs Hospitality and Tourism Jobs Human Resources Jobs Insurance Jobs IT - Administration Jobs IT - Software Development Jobs Legal Jobs Logistics Jobs Manufacturing Jobs Marketing, Digital Marketing, SEO, SEM Jobs Media Jobs Nursing Jobs Office Administration Jobs Pharmacy Jobs Physical Work Jobs Public Relations Jobs Public Sector Jobs Purchasing Jobs Quality Control Jobs Real Estate Jobs Research and Development Jobs Sales Jobs
Job Positions Jobs by Country
United States Jobs United Kingdom Jobs India Jobs Canada Jobs Australia Jobs Germany Jobs Ireland Jobs Poland Jobs
Company
Blog About Us Contact
Follow Us
Facebook
X (Twitter)
LinkedIn
Instagram
CrawlJobs Group
ITFlashcards AllDevBlogs
© 2026 CrawlJobs Ltd. All Rights Reserved
Terms & Conditions Privacy Policy