Lead Software Engineer Java React jobs in Saint Louis

Yochana

We are looking for a staff level software engineer / architect to lead the modernization of a largescale, mission critical Java platform. This role is hands on and focused on rewriting and re architecting existing systems using modern Java, Spring Boot, and cloud native patterns on AWS. What You'll

A leading staffing firm in Maryland Heights is seeking a full stack developer with strong expertise in Java, Spring Boot, and ReactJS. You will design and maintain RESTful APIs while also building responsive user interfaces. The ideal candidate will possess robust problem-solving skills and a solid

London Stock Exchange Group

Senior Lead, Software Development Engineer in Test page is loaded## Senior Lead, Software Development Engineer in Testlocations: USA-St. Louis-795 Office Pkwytime type: Full timeposted on: Posted Todayjob requisition id: R0111977LSEG (London Stock Exchange Group) is more than a diversified global fi

MasterCard

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart a

A leading global technology firm is seeking a Lead Software Engineer for its Clearing Decisioning team in O’Fallon, Missouri. This role involves designing high-quality, reliable software and guiding technical decisions. Ideal candidates will have strong expertise in Java, microservices, and cloud pl

A leading aerospace company in Hazelwood, MO is seeking a Software Lead Engineer for the MQ-25 Vehicle Management System. The role involves leading a team of engineers to develop critical software components, ensuring compliance with industry standards, and paving the way for innovative unmanned fli

A leading technology solutions company in St. Louis, MO, is seeking a Software Engineer II to enhance existing systems and develop new features. The ideal candidate will have a Bachelor's in engineering or IT and 5-10 years of software development experience, with hands-on skills in React, TypeScrip

As a Lead Software Engineer, you'll act as both a hands-on technical leader and a mentor, supporting a team through end-to-end software development initiatives using contemporary cloud and backend technologies. This role plays a key part in shaping system design, influencing engineering standards, a

At Safety National, we don't just offer jobs - we build careers with purpose! Since 1942, we've been an industry leader, valuing integrity, teamwork, and stability while providing competitive rewards, top-tier benefits, career growth opportunities, and flexible work options that promote balance. Wit

DiversityJobs Inc

Description At Safety National, we don't just offer jobs - we build careers with purpose! Since 1942, we've been an industry leader, valuing integrity, teamwork, and stability while providing competitive rewards, top-tier benefits, career growth opportunities, and flexible work options that promote

A leading commercial specialty insurance provider is seeking a Software Engineer Intern for summer 2026 in St. Louis, MO. This role involves contributing to the development and support of internal applications using technologies like C#/.NET and React. The internship offers a chance to work in an ag

Lead Java Engineer Location: O'Fallon. MO - Onsite Duration: 12+ Months Contract An ideal candidate for this role would have extensive experience in Java development and be well-versed in cloud-native applications, microservices, and a modern technology stack. Here's a breakdown of the perfect candi

A leading technology firm in O’Fallon, Missouri is seeking a senior Java Developer with at least 8 years of experience. The ideal candidate should be proficient in Java, microservices, and cloud-native technologies. Responsibilities include developing distributed applications, optimizing performance

A leading global insurance company is looking for a seasoned Software Engineer to lead and mentor a team while designing complex software solutions. The role requires a Bachelor's degree in Computer Science and 5-7 years of relevant experience. The company offers a competitive salary range of $115,0

Job Description At Boeing, we innovate and collaborate to make the world a better place. We’re committed to fostering an environment for every teammate that’s welcoming, respectful and inclusive, with great opportunity for professional growth. Find your future with us. The Boeing Company is looking

iLog, IBM ODM, Core Java, Business Rule Engines and Oracle SQL Provide technical expertise for fraud prediction applications, which include mission critical, high volume transaction processing systems Analyze customer requests for Fraud Rule changes and provide feedback on capabilities and effective

E-Solutions

Responsibilities Understanding of data integration between systems Requirements SKILLS AND ABILITIES Required: Strong SQL skills and knowledge of relational database/database design Experience writing programming code Experience providing production support Understanding of the software development

LSEG (London Stock Exchange Group)

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a commitment to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and world

A leading aerospace and technology organization is seeking a Staff Advanced Quality Engineer to enhance its software Quality Management System within a highly regulated setting. This role is vital for ensuring all software lifecycle activities meet AS9115 and AS9100 standards. The ideal candidate sh

Job Title: Lead Java Engineer Job ID: 2024-12812 Job Location: Morris Plains, NJ (Preferred), Austin TX, St. Louis MO, or Tampa FL Job Travel Location(s): # Positions: 1 Employment Type: W2 Duration:Long Term # of Layers:0 Work Eligibility:All Work Authorizations are Permitted – No Visa Transfers Ke