Explore 3 fullstack developer jobs from 3 hiring companies in Oconomowoc, WI, US. Filter by remote, salary, experience, and company, then open any listing to apply.

fullstack-developer

Fullstack Developer

Watertown

Okauchee Lake

Milwaukee

Waukesha

Delafield

Hartland

Hartford

Menomonee Falls

Brookfield

Sussex

New Berlin

Germantown

Muskego

Whitewater

Pewaukee

West Allis

Wauwatosa

Richfield

Mequon

Fullstack Developer Jobs

Fiserv

IAT Insurance Group

Zendesk

Hybrid

Onsite

<h2>Job Description</h2>About the RoleWe&#39;re building a real-time voice AI product for live, natural conversations. This is a chance to work on a product where engineering quality is felt immediately by users. Every improvement to latency, reliability, and conversation flow makes the experience faster, smoother, and more human. We&#39;re looking for a Senior Full Stack Engineer who can own product features end to end, while bringing strong backend engineering fundamentals. This is a full stack role, but the center of gravity is backend: real-time systems, integrations, performance, and reliability.What You&#39;ll Work On• Build and improve the backend systems that power real-time voice conversations• Develop integrations for telephony, real-time audio, and external AI services• Ship product features across our voice platform, including user-facing web experiences where needed• Improve platform reliability, observability, and performance• Work on real-time interaction challenges like interruptions, responsiveness, turn-taking, and conversation flow• Collaborate closely with product and design to build voice experiences that feel polished and intuitiveWhy This Role Is Exciting• Real user impact: your work directly shapes how every conversation feels• Interesting technical problems: low-latency systems, real-time interaction, and AI-powered workflows• Broad ownership: you&#39;ll contribute across product, platform, and infrastructure• Strong opportunity: voice AI is still early, and you&#39;ll help define what great products in this space look likeWe&#39;d Love to Hear From You If You• Have 3&#43; years of experience building production software• Are a strong backend engineer first, with solid fundamentals in APIs, async systems, integrations, and system design• Have experience building and owning product features end to end• Have worked with real-time or event-driven systems such as WebSockets, WebRTC, streaming, or low-latency APIs• Care about product quality and enjoy solving user-facing problems• Are excited about voice AI, conversational products, or real-time systemsNice to Have• Experience with React and TypeScript• Experience building frontend product experiences• Experience with Python and async backend architectures• Experience with telephony, WebRTC, SIP, or audio/video systems• Experience with LLMs, speech systems, or conversational AI• Experience debugging performance or reliability issues in productionTech StackPython, FastAPI, React, TypeScript, WebRTC, Redis, MongoDB, and modern LLM / speechinfrastructure.The US annualized base salary range for this position is $145,000.00-$217,000.00. This position may also be eligible for bonus, benefits, or related incentives. While this range reflects the minimum and maximum value for new hire salaries for the position across all US locations, the offer for the successful candidate for this position will be based on job related capabilities, applicable experience, and other factors such as work location. Please note that the compensation details listed in US role postings reflect the base salary only (or OTE for commissions based roles), and do not include bonus, benefits, or related incentives.The intelligent heart of customer experienceZendesk software was built to bring a sense of calm to the chaotic world of customer service. Today we power billions of conversations with brands you know and love.<a target="_blank" href="http://www.zendesk.com/company/careers/?utm_source&#61;other&amp;utm_medium&#61;organic&amp;utm_campaign&#61;job-description_Global_2025Q3">Zendesk</a> believes in offering our people a fulfilling and inclusive experience. Our hybrid way of working, enables us to purposefully come together in person, at one of our many Zendesk offices around the world, to connect, collaborate and learn whilst also giving our people the flexibility to work remotely for part of the week.As part of our commitment to fairness and transparency, we inform all applicants that artificial intelligence (AI) or automated decision systems may be used to screen or evaluate applications for this position, in accordance with Company guidelines and applicable law.Zendesk is an equal opportunity employer, and we’re proud of our ongoing efforts to foster <a target="_blank" href="http://www.zendesk.com/diversity-inclusion/">global diversity, equity, &amp; inclusion</a> in the workplace. Individuals seeking employment and employees at Zendesk are considered without regard to race, color, religion, national origin, age, sex, gender, gender identity, gender expression, sexual orientation, marital status, medical condition, ancestry, disability, military or veteran status, or any other characteristic protected by applicable law. We are an AA/EEO/Veterans/Disabled employer. If you are based in the United States and would like more information about your EEO rights under the law, please <a target="_blank" href="https://www.eeoc.gov/sites/default/files/2022-10/EEOC_KnowYourRights_screen_reader_10_20.pdf">click here</a>. Zendesk endeavors to make reasonable accommodations for applicants with disabilities and disabled veterans pursuant to applicable federal and state law. If you are an individual with a disability and require a reasonable accommodation to submit this application, complete any pre-employment testing, or otherwise participate in the employee selection process, please send an e-mail to <a target="_blank" href="mailto:peopleandplaces&#64;zendesk.com">peopleandplaces&#64;zendesk.com</a> with your specific accommodation request.

Senior Fullstack Engineer, Solve

Senior Fullstack Engineer

3+ years of production software experience; backend-first with APIs, async systems, integrations, and real-time systems; ownership of features end-to-end; experience with real-time or event-driven tech such as WebSockets/WebRTC.

Calling all innovators - find your future at Fiserv.We&#39;re Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants and consumers to one another millions of times a day - quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we&#39;re involved. If you want to make an impact on a global scale, come make a difference at Fiserv.Job TitleSoftware Development Engineering - AdvisorTITLE:                                          Software Development Engineering - AdvisorEMPLOYER:                               Fiserv Solutions, LLCLOCATION:                                 Milwaukee, WI (and various unanticipated locations throughout the U.S. subject to authorization from management)DUTIES:                                      Develop customized solutions within the platform to support critical business functions and meet project objectives, client requirements, and company goals. Develop and customize store procedures, views, triggers and queries according to business needs. Gather requirements and perform feasibility study on requirements to provide scope and estimation. Provide detailed description of design specification diagrams, program flow, high level representations and architectural models based off requirements. Design and develop rich user interface and secure finance domain print and card applications. Integrate multiple software components and third-party services and programs to achieve end-to-end solutions. Perform verification, validation, and performance acceptance testing on the applications. Execute deployments by getting approvals from change management by creating change requests to include the deployment plan and execution plans. Perform annual review of DRPs and perform DR exercises. Mentor and oversee teammates and lead knowledge sharing sessions to share new ideas and new features of the product.REQUIREMENTS:                     Bachelor&#39;s degree in Computer Science, Information Technology, Engineering or a related field and 4 years in any job title involving Microsoft fullstack development experience. Alternatively, the employer will accept a Master’s degree in Computer Science, Information Technology, Engineering or a related field and 2 years in any job title involving Microsoft fullstack development experience. Prior experience must include 2 years in the following: programming and designing business applications; providing estimation and scheduling for assignments; working with .Net MVC and Microsoft SQL; and working with .Net and Object-Oriented programming.TRAVEL:                                     None<div>TO APPLY:                                 Select “Apply” on this page and follow the prompts to attach resume and submit. JOB CODE:                                 CR539#P3M</div>It is unlawful to discriminate against a prospective employee due to the individual&#39;s status as a veteran.Our commitment to Equal Opportunity:Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law. If you have a disability and require a reasonable accommodation in completing a job application or otherwise participating in the overall hiring process, please contact <a href="mailto:AskHR.US&#64;fiserv.com" target="_blank">AskHR.US&#64;fiserv.com</a>. Please note our AskHR representatives do not have visibility to your application status. Current associates who require a workplace accommodation should refer to Fiserv’s Disability Accommodation Policy for additional information.Note to agencies:Fiserv does not accept resume submissions from agencies outside of existing agreements. Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.Warning about fake job posts:Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.

Software Development Engineering - Advisor

Software Development Engineering

Bachelor’s degree in CS/IT/Engineering with 4 years in Microsoft fullstack development or Master’s with 2 years; experience with .NET MVC, Microsoft SQL, and OO programming.

Iatinsurancegroup

At IAT Insurance Group (IAT), interns are valued members of our organization. Our internship program aims to provide meaningful, thought-provoking work to each candidate that joins the team.Our internship program matches qualified students with the opportunity to participate in real world situations, obtain industry knowledge, receive on-the-job training, and gain career enhancing technical skills that will foster professional growth. Furthermore, our internships are designed to provide each participant the opportunity to network with subject matter experts within the industry as you work to build your professional skills.At IAT, we believe that our diverse backgrounds, life experiences and perspectives help us make better decisions and ultimately be more successful. That&#39;s why we&#39;re making an active effort to not only recognize the importance of diversity and inclusion for our growth, but to also root a culture that encourages and embraces unique perspectives. We believe that when employees feel comfortable enough to come to work and express themselves, innovation, and productivity flourish. The bottom line is, we want all employees at IAT to feel like they belong.<div></div><div>Job Description</div><div>We’re seeking self-motivated individuals with a strong passion for software development to join our Application Delivery Internship Program. IAT Insurance Group has multiple openings for Full Stack Developer interns in our Naperville, IL or Milwaukee, WI locations.  The anticipated start date for this internship is May 26th, 2026. Please note, IAT works on a hybrid schedule, working from the office Monday through Wednesday with the option of working remotely Thursday and Friday.</div><div></div><div>Interns will gain hands-on experience working across the full software development lifecycle, contributing to AI initiatives that support our technology goals. This opportunity is ideal for students who have:<ul><li>Completed software development projects</li><li>Exposure to AI concepts and tools</li><li>A drive to solve real-world problems through technology</li><li>Strong collaboration and debugging skills</li></ul></div><div></div><div>Responsibilities:</div><ul><li><div>Collaborate with experienced software developers as part of a high-energy development team.</div></li><li>Think creatively and propose innovative solutions to technical challenges.</li><li>Contribute to real-world tasks including designing, coding, testing, documenting, and supporting software products—mirroring the responsibilities of a full-time developer.</li><li>Perform additional duties as needed to support project goals and team success.</li></ul><div></div><div>Qualifications:</div><ul><li><div>Rising Junior or Rising Senior</div></li><li>Analytical thinking skills.</li><li>Problem Solver.</li><li>Strong Communication skills both with Technical and non-technical resources.</li><li>Willingness to learn.</li><li>Ability to work independently.</li><li>To qualify, applicants must be authorized to work in the United States and must not require VISA sponsorship, now or in the future, for employment purposes.</li></ul>All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.  We maintain a drug-free workplace and participate in E-Verify.&nbsp;IAT Insurance Group is the largest private, family-owned property and casualty insurer in the U.S. Insurance Answers Together® is how we define IAT, in letter and in spirit. We work together to provide solutions for people and businesses. We collaborate internally and with our partners to provide the best possible insurance and surety options for our customers.At IAT, we’re committed to driving and building an open and supportive culture for all. Our employees propel IAT forward – driving innovation, stable partnerships and growth. That’s why we continue to build an engaging workplace culture to attract and retain the best talent.We offer comprehensive benefits like:<ul><li>26 PTO Days (Entry Level) &#43; 12 Company Holidays &#61; 38 Paid Days Off</li><li>7% 401(k) Company Match and additional Profit Sharing</li><li>Hybrid work environment</li><li>Numerous training and development opportunities to assist you in furthering your career</li><li>Healthcare and Wellness Programs</li><li>Opportunity to earn performance-based bonuses</li><li>College Loan Assistance Support Plan</li><li>Educational Assistance Program</li><li>Mentorship Program</li><li>Dress for Your Day Policy</li></ul>All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.  We maintain a drug-free workplace and participate in E-Verify.

Application Delivery Intern

Rising junior or senior; analytical, problem-solving, strong communication; eager to learn; able to work independently; authorized to work in the United States without visa sponsorship.

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Fullstack Developer Jobs in Oconomowoc, WI, US

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