Backend developer
3B Staffing LLC
Looking for a Backend developer? Full stack developer with React exp in Chicago, IL. Prior Bank of America or wells Fargo will be good to have. Client is currently seeking an Application Architect with our client in the financial industry located in Chicago, IL. This is a 12 + month contract position.
Responsibilities:
Responsibilities:
- Design, develop, and maintain server-side logic using Java to support web applications.
- Build and optimize RESTful APIs and microservices for seamless integration with front-end systems
- Collaborate with front-end developers to integrate React-based user interfaces with back-end functionality
- Write clean, efficient, and well-documented code following best practices and coding standards
- Work with Oracle Database to design, query, and optimize relational databases (e.g., writing SQL queries, stored procedures, and triggers)
- Troubleshoot, debug, and enhance existing systems to improve performance and reliability
- Ensure security and data protection measures are implemented in all back-end processes
- Participate in code reviews, testing, and deployment processes to ensure high-quality deliverables
- Stay updated on emerging technologies and suggest improvements to existing systems
- Bachelor's degree in computer science, Engineering, or a related field (or equivalent experience)
- 6+ years of experience in back-end development with Java and Oracle PL/SQL
- Strong proficiency in Java (e.g., Spring Boot, Hibernate, or similar frameworks)
- Experience with Oracle Database (SQL, PL/SQL, schema design, and performance tuning)
- Basic knowledge of HTML and JavaScript for supporting front-end integration
- Familiarity with React to collaborate effectively with front-end teams
- Understanding of RESTful API design and development
- Experience with version control systems (e.g., Git)
- Knowledge of web servers (e.g., Apache, Tomcat) and deployment processes
- Familiarity with Agile methodologies and tools like JIRA. Knowledge of OpenText Web Experience Management and Portal v16.x
- Strong problem-solving and analytical skills
- Able to work collaboratively in a team environment
- Excellent communication skills to liaise with technical and non-technical stakeholders
Vacancy posted 5 hours ago
Similar jobs that could be interesting for youBased on the Backend developer in Chicago, IL vacancy
- ...Backend Developer We are seeking a Senior Backend Developer who will design, build, and maintain backend services, APIs, and platform capabilities. This role combines strong backend engineering with hands-on involvement in release readiness, production deployment, monitoring...SuggestedRemote work
- ...We are looking for experienced Java Backend Developers to join our team in Chicago, IL. Key Skills: Strong experience in Java / Java 8+ Spring Boot, Spring Framework RESTful APIs and Microservices SQL and relational databases Kafka or other messaging technologies Git...SuggestedFull time
- ...Backend PHP Developer – AWS / Serverless On-Site – Evanston, IL Bear Claw is an AI-powered recruiting and applicant tracking platform built to help recruiters work smarter and place top talent faster. Our platform brings the recruiting workflow into one system—from...SuggestedFull time
- ...practical AI to make the hiring process more efficient, intelligent, and scalable. About the Role We're looking for a Middle Backend Developer to join our engineering team and help build and scale the services that power our product. You'll spend most of your time...SuggestedFull time
- ...About the Role We are looking for enthusiastic Backend Developer Interns to join our team remotely for a 3-month internship . This is an excellent opportunity to gain hands-on experience in backend development, work on real projects, and expand your technical...SuggestedInternshipRemote workWork from home
- ...Master’s degree with 8+ years’ experience Technical Skills (Required) - •10+ years or more of experience in designing and developing software applications in Java. Proven experience in many of the following: - Designing, developing, deploying and...Full timeWork at officeShift workWeekend work
- ...About the job Back-End Developer Our client is looking for a Backend technologist to build services and APIs to support our next generation of products. You will join our team of other world-class Engineers and collaborate closely with our Operations, UX/UI Design...Work at officeWork from homeFlexible hours
- ...excellent reputation with the clients. Currently, we are looking for entry-level software programmers, IT enthusiasts, Python/Java developers, Data analysts/Data Scientists. Who Should Apply? Recent IT graduates looking to make their careers in the IT industry...
- ...Master's degree with 8+ years' experience Technical Skills (Required) ~•10+ years or more of experience in designing and developing software applications in Java. Proven experience in many of the following: ~ Designing, developing, deploying and...Work at officeShift workWeekend work
- ...Job Description Job Description 1. Frontend Developer Intern: We are seeking a motivated and detail-oriented Frontend Developer Intern... .../ TypeScript and React, while collaborating closely with backend engineers to integrate APIs and deliver seamless user experiences...Internship
$120k - $190k
...only considering candidates located in and authorized to work in the United States. JOIN OUR TEAM! Bitovi is looking for a Backend Developer Consultant to join us as we transform technology delivery. We build and operate distributed backend systems for enterprise...Full timeLocal areaRemote workFlexible hours- Responsibilities: • Write clean and maintainable code in a fast-paced environment • Working on Azure Functions written in NodeJS using CosmosDB • Provide estimates for the work that you will be doing then meet those estimates • Participate in all required agile...
$103k - $143k
...000 per year Requirements: Strong professional experience developing with PHP Hands-on experience with AWS Lambda and serverless... ...similar AI technologies Responsibilities: Build and enhance backend services using PHP, AWS Lambda, API Gateway, and MySQL...Full time- ...Job Description Job Description We are helping our Direct Client (Fortune 100 company) to look for Top Notch/Expert Sr. Backend Java Developer for 100% Onsite Multi-Year Contract role in Chicago Downtown, Immediate Start! Client – Direct Client (Fortune 100...Contract workH1bLocal areaImmediate start
$103k - $143k
...year Requirements: Approximately 2–4 years of professional backend development experience. Strong practical experience with PHP... ...practices. Interest in AI/LLM-based features and willingness to develop skills in this area. Strong problem-solving skills,...Full time- ...Role: Backend .NET Developer Location: Westchester, IL – 3 days onsite – 2 days remote Contract Job Important notes: Need only local consultants Don’t submit senior candidates we need doers with real-time hands-on experience. NO FRONT-END DEVELOPERS...Contract workTemporary workLocal areaRemote work
$120k - $190k
...considering candidates located in and authorized to work in the United States. JOIN OUR TEAM! Bitovi is looking for a Backend / Platform Developer Consultant to join us as we transform technology delivery. We build and operate durable, distributed systems for...Full timeLocal areaRemote workFlexible hours$84k - $124k
...years of experience. ~10+ years of experience designing and developing software applications in Java. ~ Experience designing, developing... ...microservices ActiveMQ Kafka RabbitMQ TDD Backend More: We offer a hybrid work environment, with office attendance...Full timeWork at officeWeekend work- ...Telematics Data Platform Developer You will build upon our telematics data platform which drives Client’s digital applications to meet organizational goals. You will work on a fast-moving agile development team on all phases of software development, attending daily...
- At Yourco, we're bringing traditional industries into the future. AI unlocks the opportunity to empower frontline workforces and bring traditional industries into the future. Yourco is hiring, and we are looking for the best of the best in Chicago. It is the most...Work at office
- ...Backend Software Engineer Fize is a rapidly growing startup in the financial data space. We bring together everything that's required to build websites and apps that require personal insurance data. Fize's products enable businesses to request insurance data over a...
- ...real customer processes, integrating directly with their systems and adapting to operational edge cases you uncover in the field. Develop core platform components and integration tooling that standardize common patterns, reduce one-off work, and help the team scale...Work at office
- ...Hiring: Full Stack Developer | Chicago, IL - Hybrid | Full-Time **Direct candidates only. No C2C or third-party submissions. No current... ...A few things we’re looking for: AWS cloud experience Backend experience with Node.js and/or Python React / TypeScript (nice...Permanent employmentFull timeVisa sponsorship
$112.9k - $188.1k
...of technical solutions You Will Build applications and develop product design solutions in partnership with engineers,... ...scalable and maintainable software solutions Utilize (Frontend/Backend/Full Stack) specialized skills based on specific platform or domain...Full timeLocal area$165k - $200k
...who enjoys solving ambiguous problems, moves comfortably between backend and frontend development, and takes ownership from idea →... ...Engineering Build backend services and APIs using Python . Develop modern frontend experiences using React and TypeScript ....Full timeCasual workWork at office$160k - $180k
...clients, their families, and our Care Professionals. As a Senior Backend Engineer at Honor: You care about building systems that... ...of families find the care they need. Growth Team — developing a multi-channel sales and communication stack (phone, sms, email...Temporary workRemote work- ...the software development lifecycle. They should have strong Django and Python development skills. They will work with analysts, developers and managers as part of project development. A wide degree of creativity and latitude is expected. Required Skills - Django, Python...
- ...The Senior Full Stack Developer will design, build, and support modern capabilities for Crew Pay, a business-critical pay platform. This role combines hands-on application development with cloud-native engineering across AWS, event-driven services, streaming, data processing...Hourly payFull time
$100k
...What We’re Looking For You have 2-7 years of professional engineering experience. You're genuinely full-stack: comfortable across backend, frontend, and APIs. You have production experience, you’ve shipped software with real users, with tests, code reviews, and CI/CD....Work at office1 day per week- ...“core agents” (note‑taker, CRM updater, email drafter, etc.) Develop off‑menu, firm‑specific automations that save hours weekly Elevate... ..., reliable software — someone who moves easily between backend systems, data workflows, and front‑end product experiences....Full time
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Backend developer. Be the first to apply!
Related searches




