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  • Software Engineer 2 (ASP.NET Web API)

    $105.4k - $124k

     ...Software Engineer - Full Stack builds and supports web applications, APIs, business-tier components, and database solutions using...  ...who is comfortable with both front and back-end programming to develop and support existing and new applications. The main scope of work... 
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    Full time
    Local area
    3 days per week

    US Bank

    Saint Louis, MO
    3 days ago

  • Senior Platform Engineer

    $113k - $163k

     ...approaches.4+ years of experience with Terraform and CI/CD, including developing reusable modules used by other teams.4+ years of experience...  ..., distributed tracing, and mesh observability.Experience with API management platforms and the automated promotion of API... 
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    Full time
    Temporary work
    Local area
    Flexible hours

    John Hancock

    Waterloo, IL
    1 day ago

  • Lead Software Developer (C/ C++/ WebAssembly)

    $118k - $168k

     ...and client applications worldwide.Your ImpactAs a Lead Software Developer on the Intelligent Viewing team, you will play a key role in...  ...with rendering and visualization technologies such as Windows APIs, Skia, and WebGL.Strong knowledge of document and graphics formats... 
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    Worldwide

    OpenText

    Waterloo, IL
    2 days ago

  • Principal IT Software Developer

    $118k - $177k

     ...of information management. Join us.Your Impact: The Principal Developer, IT - System Integrations is a senior technical leader responsible...  ...designing and building enterprise integration solutions and APIs.Strong expertise in:REST/SOAP APIs, microservices, and event-driven... 
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    OpenText

    Waterloo, IL
    14 hours ago

  • Senior Cloud Engineer -Hybrid

    $107.45k - $199.55k

     ...secure, reliable, and efficient solutions.What You'll DoDesign, develop, and implement cloud-based applications and infrastructure solutions...  ...and Infrastructure-as-Code practices.Develop and maintain APIs, web services, and integration solutions across enterprise platforms... 
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    Full time
    Temporary work
    Local area
    Flexible hours

    John Hancock

    Waterloo, IL
    1 day ago

  • Full-Stack Software Engineer

    $86.1k - $136.1k

     ...you anywhere you want to go.Position Responsibilities:Designs, develops, tests, delivers, maintains, and improves business applications...  ...software development lifecycle.Designs end-user interfaces, databases, APIs and server-side logic while maintain both front and back-end web... 
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    Full time
    Temporary work
    Local area
    Flexible hours

    John Hancock

    Waterloo, IL
    1 day ago

  • Senior Full-Stack Software Engineer

    $96.6k - $179.4k

     ...our technology team, you will mentor agile engineering squads to develop and deliver transformative and impactful digital solutions to...  ...or integrating AI agents and agentic workflows that use tools, APIs, enterprise data, or retrieval-augmented generationFamiliarity with... 
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    Full time
    Temporary work
    Local area
    Flexible hours

    John Hancock

    Waterloo, IL
    3 days ago

  • Principal Software Developer

     ...system.Your Impact:We are seeking an experienced Principal Software Developer responsible for the design and implementation of services for...  ...constraints in .NET and native code, including Windows-only APIs, native/COM interop boundaries, 32-bit vs. 64-bit implications,... 
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    Contract work
    Flexible hours

    OpenText

    Waterloo, IL
    14 hours ago

  • Sr. IT Software Developer

     ...that serve customers and employees globally.As a Sr. IT Software Developer (Digital Fullstack), you will independently deliver full-stack...  ...ecosystem. You will work across front-end, back-end, APIs, content platforms, cloud services, and delivery automation. This... 
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    OpenText

    Waterloo, IL
    1 day ago

  • Senior Software Engineer, Operations

     ...Learn on the job: Web services and frameworks such as SOAP, REST API, Java APIs, JSON, Spring BootDatabase technologies like SQL,...  ...learning mindset Familiar with AI Ops capabilities, experience developing / implementing AI based tools is an added advantage Ability to... 
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    Full time
    Work at office
    Work from home

    Sun Life Financial

    Waterloo, IL
    3 days ago

  • Lead Software Developer (Fortify Cloud development)

    $118k - $168k

     ...leader in the Gartner Magic Quadrant.We are expanding our Fortify Cloud development team and are looking for a self-motivated Software Developer who enjoys solving complex technical challenges at scale. In this role, you will help design and build the next generation of... 
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    Work at office

    OpenText

    Waterloo, IL
    14 hours ago

  • Java UI Developer

     ...Sr Java UI Developer Location: Saint Louis, MO Duration: 12 months+ US Citizen, Green Card, EAD preferred... No Third Party Agencies...  ...version control (preferably git) Solid understanding of REST API design Experience with JavaScript build tools (web pack, r.js... 
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    Georgia IT Inc

    Saint Louis, MO
    1 day ago

  • Senior AI Developer (AI-Powered Applications)

    $98.08k - $147.12k

     ...shape the future of information management. Join us.Job: Senior AI Developer (AI-Powered Applications)Team: OpenText Content Aviator -...  ...using LangChain and LangGraph.Build scalable backend services, APIs, and platform capabilities using Node.js and Python.Take ownership... 
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    Work at office

    OpenText

    Waterloo, IL
    2 days ago

  • Senior UI/UX Engineer

    $107.9k - $195.05k

     ...Candidate We're looking for someone who is more than a front-end developer. You are passionate about how technology feels and functions...  ...tooling. Experience developing or consuming RESTful APIs and integrating UI applications with backend services. Experience... 
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    Local area
    Immediate start

    Leidos

    Saint Louis, MO
    3 days ago

  • Junior java backend developer with spring boot/ data analyst

    $100k

     ...looking for entry-level software programmers, Java Full stack developers, Python/Java developers, Data analysts/ Data Scientists, Machine...  ..., Microservices, Docker, Jenkins, Github, Kubernates and REST API's experience Excellent written and verbal communication skills... 
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    Full time
    H1b

    SynergisticIT

    Saint Louis, MO
    1 hour agonew

  • Senior C# .Net developer

     ...C# .Net Developer Role Overview: We are seeking a C#.Net developer to join our team in St. Louis, Mo. Job Responsibilities: Develop...  ...and maintaining a unit test suite ~ Experience automating API and user interface tests ~1-2 years' experience with modern... 

    The Timberline Group Company

    Saint Louis, MO
    1 day ago

  • Full Stack Developer

    $115k - $125k

    DescriptionKforce has a client that is seeking a Full Stack Developer in Saint Louis, MO.Overview:Our client is looking for a Software Engineer...  ..., integrated, and delivered, using Node.js, JavaScript, APIs, and the Profound.js framework. You will help modernize legacy... 

    KForce

    Saint Louis, MO
    3 days ago

  • Mid Software Developer

     ...Job Description Job Description Overview Mid Software Developer   O’Fallon, IL   Are you ready to enhance your skills and...  ...Experience with TypeScript, Node.js/Express, ASP.NET Core Web API, Swagger (Open API), C#, and Postgres Familiarity with REST principles... 
    Work at office
    Work from home
    Home office

    Chenega Corporation

    O Fallon, IL
    28 days ago

  • Senior Full Stack Software Engineer

    $113k - $163k

    The Senior ETL Developer plays a critical role in designing, developing, and maintaining enterprise‑grade data integration solutions that support analytics, reporting, and operational decision‑making. In this role, you will leverage deep expertise in Informatica, SQL, and... 
    Full time
    Temporary work
    Local area
    Flexible hours

    John Hancock

    Waterloo, IL
    3 days ago

  • Back End C# Developer

    Backend DeveloperThe Backend Developer will work in a team environment using a variety of technologies for building leading edge solutions...  ...processes that keep day to day operations runningWork with various API's to help integrate our systems into additional third-party... 
    Work experience placement
    Remote work

    The Timberline Group Company

    Saint Louis, MO
    2 days ago

  • Lead Cloud Applications Consultant

    $110.96k - $160.96k

     ...proactively guiding them toward successful outcomes throughout their cloud lifecycle.As the technical leader on the account, you will develop a deep understanding of the customer’s hosted environment, applications, operational priorities, and risk profile. You will... 
    Work at office

    OpenText

    Waterloo, IL
    2 days ago

  • Senior AWS Python Developer - Kafka (AWS-based solutions, Kafka integrations, and data pipelines), P

     ...ID: 29314331Reference Number: 26-00958Title: Senior AWS Python Developer - Kafka (AWS-based solutions, Kafka integrations, and data pipelines...  ...data pipelines, configurable business-rule frameworks, APIs, microservices, and containerized applications while ensuring performance... 
    Contract work
    Remote work

    HAN Staffing

    Saint Louis, MO
    2 days ago

  • Mobile Frontend Developer

     ...Job Description Job Description Job Title: Mobile Frontend Developer Location : Remote Compensation : 50-55$/Hr on C2C/1099...  ...interfaces. · Collaborate with backend developers to integrate APIs and services. · Ensure the technical feasibility of UI/UX designs... 
    Remote work

    Krest Global Solutions

    Saint Louis, MO
    23 days ago

  • AWS Full Stack Engineer

    $99k - $225k

    AWS Full Stack EngineerThe Opportunity: As a full stack developer, you can resolve a problem with a complete end-to-end solution in a fast...  ...including MongoDBExperience with serverless architecture such as API GatewayExperience leading technical initiatives in large-scale... 
    Full time
    Contract work
    Part time
    Work at office
    Local area
    Remote work

    Booz Allen Hamilton

    Arnold, MO
    4 days ago

  • Lead Engineer, Precision Interconnect Systems

    $150k

     ...systems used in advanced testing and measurement environments. Based in Waterloo, Ontario, this full-time opportunity will focus on developing high-performance contact mechanisms, interconnect solutions, and precision assemblies that require exceptional reliability,... 
    Full time

    Motion Recruitment

    Waterloo, IL
    3 days ago

  • Mid-Level Backend Software Engineer

     ...application used across the organization for analytics and reporting. You'll help build and maintain core backend services, develop RESTful APIs, support data-driven functionality, and contribute to ongoing system enhancements within a Linux-based environment. Your work... 

    Arizona Staffing

    Saint Louis, MO
    2 days ago

  • Software Developer

    $87.1k - $157.45k

     ...obtain their Security + certification. Primary Responsibilities:Develop automated CI/CD build/deployment pipelines using Jenkins (CloudBees...  ...to research, analyze, select and design integrations for APIs, as well as develop extensions/plugins for existing tools/components... 
    Full time
    Contract work
    Interim role
    Remote work

    Leidos

    O Fallon, IL
    3 days ago

  • Mid-Level Backend Software Engineer

    $105k - $125k

     ...on this effort will work with cross-functional teams to design, develop, and deploy impactful capabilities while helping shape the architecture...  ...role focuses on building scalable services, developing RESTful APIs, and supporting data-driven functionality within a Linux-based... 
    Full time
    Remote work

    Ennoble First, Inc.

    Saint Louis, MO
    2 days ago

  • QA Test Engineer - Web & API | Agile

    Technology Partners seeks a Test Engineer to design and execute comprehensive test plans, validate APIs, and support large-scale application testing. You will document defects, analyze results, and collaborate with cross-functional teams to ensure quality from development... 

    Technology Partners

    Saint Louis, MO
    1 day ago

  • Senior AI Platform Backend Engineer #26-21439

     ...services that support AI capabilities. This role focuses on scalable APIs cloud-native services and the systems that enable secure access...  ...Design build deploy monitor and support production services. Develop and maintain REST APIs for content management retrieval and... 
    Contract work
    Temporary work

    US Tech Solutions

    Saint Louis, MO
    7 days ago