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

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Principal Java Developer

Watertown

Okauchee Lake

Milwaukee

Waukesha

Delafield

Hartland

Hartford

Menomonee Falls

Brookfield

Sussex

New Berlin

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Muskego

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Pewaukee

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Principal Java Developer Jobs

Baxter

Exact Sciences

Onsite

Hybrid

This is where your work makes a difference.At Baxter, we believe every person—regardless of who they are or where they are from—deserves a chance to live a healthy life. It was our founding belief in 1931 and continues to be our guiding principle. We are redefining healthcare delivery to make a greater impact today, tomorrow, and beyond.Our Baxter colleagues are united by our Mission to Save and Sustain Lives. Together, our community is driven by a culture of courage, trust, and collaboration. Every individual is empowered to take ownership and make a meaningful impact. We strive for efficient and effective operations, and we hold each other accountable for delivering exceptional results.Here, you will find more than just a job—you will find purpose and pride. <h2>Your Role at Baxter:</h2>Join Baxter Healthcare Corporation as a Principal Software Engineer- Android Development in Milwaukee, where you will play a pivotal role in transforming healthcare solutions. This is a ground breaking opportunity to apply your software engineering expertise to develop modern medical products that save and sustain lives. You will be part of an ambitious team dedicated to developing world-class software in the Android environment for medical devices.<h2>What You&#39;ll Do</h2><ul><li>Apply and demonstrate strong software engineering expertise to build and develop robust software architectures. Influence the processes and methodologies the team uses to develop quality software.</li><li>Develop software components in an Android environment that will be deployed in medical products, using architectural patterns, strong object-oriented principles, unit testing, and automated testing tools.</li><li>Own and control software implementation, ensuring that software is built in a modular fashion, testable, reusable, and maintainable.</li><li>Participate in the formal documentation processes for requirements generation, software architecture, and detailed builds.</li><li>Analyze and understand product requirements, deriving software requirements.</li><li>Identify key product-level technical risks and assist project managers in developing mitigation and recovery plans.</li><li>Review work products and ensure the quality of deliverables.</li><li>Provide input to test strategies at both product and module levels.</li><li>Drive the application of principles of SDLC and methodologies like Lean/Agile/XP, Software and Product Security, Scalability, Documentation Practices, refactoring, and testing techniques.</li><li>Own and drive continuous improvement activities by identifying and appropriately advancing process and product quality gaps.</li></ul><h2>What You&#39;ll Bring</h2><ul><li>Bachelor’s/Master’s degree in Computer Science or related fieldwith 5&#43; years in software engineering and 2&#43; years developing Android applications</li><li>Proficiency in Java/Kotlin, with additional familiarity in JavaScript/TypeScript and C&#43;&#43; for embedded/firmware</li><li>Hands‑on experience with Android SDK, NDK, Android Studio, and strong understanding of Android architecture, components, security, and best practices</li><li>Background in regulated industries preferred, especially medical devices with exposure to IEC 62304 and quality/regulatory collaboration</li><li>Strong software architecture, design patterns, SOLID principles, TDD, and CI/CD familiarity</li><li>Experience working in Agile environments using tools like Azure DevOps or Jira, and version control systems such as Git or SVN</li><li>Proven track record of delivering technical solutions, solving complex problems, and working effectively with cross‑functional and multisite teams</li><li>Excellent communication, leadership, and collaboration skills, with a proactive mindset and willingness to mentor and drive team success</li></ul>Join us at Baxter and contribute to a team pushing the boundaries of healthcare technology. The team is dedicated to making a real difference in patients&#39; lives every day. Be part of something outstanding!Baxter is committed to supporting the needs for flexibility in the workplace. We do so through our flexible workplace policy which includes a required minimum number of days a week onsite. This policy provides the benefits of connecting and collaborating in-person in support of our Mission. The flexible workplace policy is subject to local laws and legal requirements. At its discretion, Baxter may decide to adjust, suspend, or discontinue as business needs change. We understand compensation is an important factor as you consider the next step in your career. At Baxter, we are committed to equitable pay for all employees, and we strive to be more transparent with our pay practices. The estimated base salary for this position is $112,000- $154,000 annually. The estimated range is meant to reflect an anticipated salary range for the position. We may pay more or less than of the anticipated range based upon market data and other factors, all of which are subject to change. Individual pay is based on upon location, skills and expertise, experience, and other relevant factors. This position may also be eligible for discretionary bonuses. For questions about this, our pay philosophy, and available benefits, please speak to the recruiter if you decide to apply and are selected for an interview.Applicants must be authorized to work for any employer in the U.S. We are unable to sponsor or take over sponsorship of an employment visa at this time.#LI-TV1US Benefits at Baxter (except for Puerto Rico)This is where your well-being matters. Baxter offers comprehensive compensation and benefits packages for eligible roles. Our health and well-being benefits include medical and dental coverage that start on day one, as well as insurance coverage for basic life, accident, short-term and long-term disability, and business travel accident insurance. Financial and retirement benefits include the Employee Stock Purchase Plan (ESPP), with the ability to purchase company stock at a discount, and the 401(k) Retirement Savings Plan (RSP), with options for employee contributions and company matching. We also offer Flexible Spending Accounts, educational assistance programs, and time-off benefits such as paid holidays, paid time off ranging from 20 to 35 days based on length of service, family and medical leaves of absence, and paid parental leave. Additional benefits include commuting benefits, the Employee Discount Program, the Employee Assistance Program (EAP), and childcare benefits. Join us and enjoy the competitive compensation and benefits we offer to our employees. For additional information regarding Baxter US Benefits, please speak with your recruiter or visit our Benefits site: <a href="https://www.baxter.com/careers/benefits" target="_blank">Benefits | Baxter</a>Equal Employment OpportunityBaxter is an equal opportunity employer. Baxter evaluates qualified applicants without regard to race, color, religion, gender, national origin, age, sexual orientation, gender identity or expression, protected veteran status, disability/handicap status or any other legally protected characteristic.<a href="https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12ScreenRdr.pdf" target="_blank">Know Your Rights: Workplace Discrimination is Illegal</a>Reasonable Accommodations Baxter is committed to working with and providing reasonable accommodations to individuals with disabilities globally. If, because of a medical condition or disability, you need a reasonable accommodation for any part of the application or interview process, please click on the <a target="_blank" href="https://forms.microsoft.com/Pages/ResponsePage.aspx?id&#61;Nd3GyB-HME-FrGU185glFONjsWP56EBPkq0TvnZuTOFUQk8wUzgwWENFVU5YOFdEOTFEM0pTN0VOVy4u">link</a> here and let us know the nature of your request along with your contact information.Recruitment Fraud Notice Baxter has discovered incidents of employment scams, where fraudulent parties pose as Baxter employees, recruiters, or other agents, and engage with online job seekers in an attempt to steal personal and/or financial information. To learn how you can protect yourself, review our <a target="_blank" href="https://jobs.baxter.com/how-to-apply#fraud-notice">Recruitment Fraud Notice</a>.

Principal Software Engineer- Android Development

Principal Software Engineer

5+ years software engineering; 2+ years Android development; Java/Kotlin; Android SDK/NDK; Agile/Lean/XP; CI/CD; cross-functional collaboration; regulated industries experience preferred.

Help us change livesAt Exact Sciences, we’re helping change how the world prevents, detects and guides treatment for cancer. We give patients and clinicians the clarity needed to make confident decisions when they matter most. Join our team to find a purpose-driven career, an inclusive culture, and robust benefits to support your life while you’re working to help others.Position Overview<div>The Principal Software Engineer is a senior Individual Contributor and cross-cutting technical authority within our product-led IT Software Engineering team, focused on Digital Engineering and Integrations. This team owns the customer-facing portals that serve patients, providers, and payers, along with the integrations that power them. Reporting directly to the Senior Director of Software Engineering, this role is less about managing work and more about elevating it, serving as a thought partner to Engineering Leaders, shaping architecture decisions, and raising the bar for how we build across all squads. </div><div> </div><div>We are looking for someone who has operated at true enterprise scale and knows what it takes to make complex systems reliable, secure, and built to last. This person will challenge technical assumptions, champion non-functional requirements like performance, availability, and observability as first-class concerns, help ensure our engineering decisions support a consistent and scalable UX design system, and guide the team through meaningful architectural evolution, including scaling our platforms for international growth and applying modern team design principles to clarify ownership, reduce dependencies, and reduce friction across our portfolio. </div><div> </div><div>Just as important as the technical depth is how this person shows up. The ideal candidate is a deep collaborator, someone who earns trust by embedding with teams, listens before they lead, and drives meaningful change by bringing people along with them. This role requires working onsite in Madison, WI at least three days per week.</div>Essential DutiesInclude, but are not limited to, the following:<ul><li>Apply expert knowledge, skills, and practices to diverse programs and complex initiatives demonstrating creativity and mastery of specialized techniques, processes, procedures. Exercise independent judgment in methods, techniques, and evaluation criteria for obtaining results.</li><li>Troubleshoot, debug, and diagnose issues of high complexity for major software platforms.</li><li>Provide guidance to engineers and technical expertise and coaching to product team.</li><li>Design lasting platforms in collaboration with product teams on large scale business or technology project(s).</li><li>Drive the quality of platforms and organizational practices that impact and influence the department’s delivery and approach.</li><li>Contribute, interpret, and communicate enterprise, technical, project, and operational strategies, taking into account company dynamics.</li><li>Build successful internal partnerships with IT leadership, peers, SMEs, stakeholders, and decision-makers. Manage vendor and external partnerships.</li><li>Work on projects of high complexity with multiple business units, ongoing acquisition integration activity, or large cross-functional program implementations.</li><li>Exercise independent judgment in methods, techniques and evaluation criteria that affect schedules, operations, and functional activities.</li><li>Ability to work nights and/or weekends, as needed.</li><li>Uphold company mission and values through accountability, innovation, integrity, quality, and teamwork.</li><li>Support and comply with the company’s Quality Management System policies and procedures.</li><li>Maintain regular and reliable attendance.</li><li>Ability to act with an inclusion mindset and model these behaviors for the organization.</li></ul>Minimum Qualifications<ul><li>Bachelor’s Degree in Data Science, Computer Science, Information Systems, Mathematics, or Engineering; or High School Diploma/General Education Degree and 12 years of relevant experience as outlined in the essential duties in lieu of Bachelor’s Degree.</li><li>Expert in 1 or more object-oriented programming languages.</li><li>RESTful web services, Relational Databases (Postgres, SQL Server), and ORM technologies (JPA2, Hibernate, Entities Framework). </li><li>Designing and developing apps that access and or utilize cloud-based frameworks (e.g., Azure, Amazon AWS Services/SDKs, etc.).</li><li>Agile development tools; including, but not limited to, JIRA, Confluence repository.</li><li> Programming languages such as C, C&#43;&#43;, Java, JavaScript, Python, SQL, PL/SQL, .NET, Google Web Toolkit.</li><li>Demonstrated ability to perform the essential duties of the position with or without accommodation.</li></ul>Preferred Qualifications<ul><li>Demonstrated experience assessing and designing systems for international scale, including data residency, localization, latency, and regulatory variance across multiple regions. </li><li>Experience defining and championing non-functional requirements (NFRs) such as performance, scalability, availability, observability, and security as first-class engineering concerns across multiple teams. </li><li>Experience leading or contributing to team design and domain ownership efforts, including service decomposition and establishing clear boundaries in complex enterprise environments. </li><li>Expertise with integration architecture patterns including HL7, FHIR, middleware technologies, and event-driven platforms such as Kafka. </li><li>Familiarity with UX design systems and the engineering practices that support consistent, scalable user experiences in a product-led organization. </li><li>Experience in healthcare, life sciences or other internationally regulated industries. </li></ul>#LI-AJ1Salary Range:$153,000.00 - $259,000.00 The annual base salary shown is for this position located in US - WI - Madison on a full-time basis. In addition, this position is bonus eligible.Exact Sciences is proud to offer an employee experience that includes paid time off (including days for vacation, holidays, volunteering, and personal time), paid leave for parents and caregivers, a retirement savings plan, wellness support, and health benefits including medical, prescription drug, dental, and vision coverage. Learn more about our <a href="https://careers.exactsciences.com/benefits" target="_blank">benefits</a>.Our success relies on the experiences and perspectives of a diverse team, and Exact Sciences fosters a culture where all employees can develop personally and professionally with a sense of respect and belonging. If you require an accommodation, please contact us <a href="mailto:neo&#64;exactsciences.com?subject&#61;Exact%20Sciences%20Recruiting" target="_blank">here</a>.Not ready to apply? Join our <a href="http://exactsciences.wd1.myworkdayjobs.com/en-US/Exact_Sciences/introduceYourself" target="_blank">Talent Community</a> to stay updated on the latest news and opportunities at Exact Sciences.We are an equal employment opportunity employer. All qualified applicants will receive consideration for employment without regard to disability, protected veteran status, and any other status protected by applicable local, state, or federal law.To view the Right to Work, E-Verify Employer, and Pay Transparency notices and Federal, Federal Contractor, and State employment law posters, visit our <a href="https://exactsciences.box.com/s/gj6pxvld7g6rnhvum3cttfdevppp34s2" target="_blank">compliance hub</a>. The documents summarize important details of the law and provide key points that you have a right to know.

Senior individual contributor with expertise in OO languages, REST/DB, cloud, Agile, and enterprise-scale digital engineering.

Job Description<div>We are FIS. Our technology powers the world’s economy and our teams bring innovation to life. We champion diversity to deliver the best products and solutions for our colleagues, clients and communities. If you’re ready to start learning, growing and making an impact with a career in fintech, we’d like to know: Are you FIS?</div><div><div><div><div><div><div><div><div><div>NOTE: 1: This position is hybrid (3 days onsite) in our FIS Office locations in Milwaukee (WI) &amp; Atlanta (GA).2: Current of future Sponsorship is not available for this position.About the Team:The Commercial &amp; BPaaS organization at FIS is a mission‑critical technology and services division that powers some of the largest financial institutions, government agencies, and commercial enterprises across North America. Our teams deliver high‑scale, high‑reliability platforms that support card manufacturing and personalization, item processing, back‑office banking operations, workforce automation, and next‑generation Business Process‑as‑a‑Service (BPaaS) solutions—serving more than 3,000 clients, including many of the top issuers and financial institutions in the industry.Bringing together engineering, product, delivery, and commercialization functions, the Commercial &amp; BPaaS group is designed to accelerate innovation while operating complex, high‑volume systems that process billions of transactions and items annually. What you will be doing<ul><li>As Principal SRE - define meaningful SLIs, SLOs for owned services; tracks error budgets and burn rates.</li><li>Advanced scripting, CI/CD, container orchestration (Docker/Kubernetes).</li><li>Forecasts capacity for owned services; plans for growth.</li><li>Automates recurring workflows; maintains CI/CD pipelines.</li><li>Owns on-call for services; troubleshoots incidents independently.</li><li>Writes blameless postmortems; tracks follow-up actions.</li><li>Decision-making, conflict resolution, mentoring juniors.</li><li>Collaborate with development, QA, DevOps, and product teams to align on reliability goals and incident response processes.</li><li>Conduct capacity planning, performance tuning, and resource optimization.</li><li>Collaborate with security teams to implement best practices and ensure compliance.</li><li>Manage deployment pipelines and configuration management for consistent and reliable app deployments.</li></ul>What you bring:15&#43; years of experience in SRE, Software engineering and architecture in public cloud environments. Performance and Reliability – Must Haves<ul><li>Strong Knowledge in Performance Monitoring Tools like Dynatrace, Splunk and ability to create Dashboards, Views and Alerts.</li><li>Pattern Analysis and Correlation skillset.</li><li>Experience in middleware and ancillary technologies as per business need.</li><li>Experience with relational databases, and/or NoSQL databases.</li><li>Experience in SDLC and Agile Methodologies (Code Reviews, automated test cases etc).</li><li>Experience in Capacity Planning and Demand Forecasting.</li></ul>Programming Skills and SRE Foundation<ul><li>Knowledge in OS, Network, Middleware, Database, SSL, Load Balancer.</li><li>Must have knowledge in scripting language (Unix Shell, Windows Scripting, Python, Java, .NET…).</li><li>Knowledge in DevOPS (CI/CD), Perf Engg. will be nice to have for SRE role.</li><li>To have a knowledge in End-to-End Application Topology.</li><li>Knowledge in Cloud and Container Technologies.</li></ul>Automation &amp; Scalability<ul><li>Hands on with at least one of  (Unix/Windows Scripting, Python, Java, C&#43;&#43;, C#).</li><li>Ability to Automate repetitive tasks - (Scripting, RPA, Power Automate, UiPath etc.).</li><li>Ability to implement AI models in Problem Solving and reduce MTTR.</li><li>Experience with relational databases, and/or NoSQL databases.</li><li>Strong Experience in Development and Implementation of Monitoring Tools like Dynatrace, Splunk and ability to create Dashboards, Views and Alerts.</li><li>Ability to identify and eliminate TOILs.</li></ul>Product Delivery CI/CD &amp; DevOps<ul><li>Experience with Virtualization / Containerization in a production environment  (e.g. Kubernetes, etc.).</li><li>Knowledge in DevOPS (CI/CD) and relevant tools (e.g. Jenkins).</li><li>Knowledge of configuration management systems like Ansible, Chef or Puppet.</li></ul>Observability<ul><li>Strong Problem-Solving Skills.</li><li>Pattern Analysis and Correlation skillset.</li><li>Strong Knowledge in Tools like Dynatrace, Splunk and ability to create Dashboards, Views and Alerts.</li><li>Experience in Reliability and Performance Engineering and Tools.</li></ul>Soft Skills<ul><li>Engineering Mindset with End to End view and provide solutions.</li><li>Passion for problem solving with strong analytical capabilities.</li><li>Strong and Assertive Communication.</li><li>Good Leadership skills.</li><li>To be more proactive than reactive.</li><li>Passion for Continuous Improvement.</li></ul>Platform Maturity &amp; Continuous Improvement<ul><li>Banking / Payments Product Domain Knowledge.</li><li>Experience in Fintech working in Fintech Companies with rich Domain Experience.</li><li>Experience in middleware and ancillary technologies as per business need</li><li>Experience with Virtualization / Containerization in a production environment  (e.g. Nomad, Mesos, Kubernetes, etc.).</li><li>Knowledge in OS, Network, Middleware, Database, SSL, Load Balancer.</li><li>Experience in driving and implementing SRE Principals.</li></ul>What we offer you:At FIS, we hire the best. In return, you receive exceptional benefits including:<ul><li>Opportunities to innovate in fintech</li><li>Tools for personal and professional growth</li><li>Inclusive and diverse work environment</li><li>Resources to invest in your community</li><li>Competitive salary and benefits</li></ul>NOTE: 1: This position is hybrid (3 days onsite) in our FIS Office locations in Milwaukee (WI) &amp; Atlanta (GA).2: Current of future Sponsorship is not available for this position.</div></div></div></div></div></div></div></div></div> Privacy StatementFIS is committed to protecting the privacy and security of all personal information that we process in order to provide services to our clients. For specific information on how FIS protects personal information online, please see the <a target="_blank" href="http://www.fisglobal.com/privacy">Online Privacy Notice</a>.EEOC StatementFIS is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, marital status, genetic information, national origin, disability, veteran status, and other protected characteristics. The EEO is the Law poster is <a target="_blank" href="https://www.eeoc.gov/sites/default/files/migrated_files/employers/eeoc_self_print_poster.pdf">available here</a> supplement document <a target="_blank" href="http://www.dol.gov/ofccp/regs/compliance/posters/pdf/OFCCP_EEO_Supplement_Final_JRF_QA_508c.pdf">available here</a> For positions located in the US, the following conditions apply. If you are made a conditional offer of employment, you will be required to undergo a drug test. ADA Disclaimer: In developing this job description care was taken to include all competencies needed to successfully perform in this position. However, for Americans with Disabilities Act (ADA) purposes, the essential functions of the job may or may not have been described for purposes of ADA reasonable accommodation. All reasonable accommodation requests will be reviewed and evaluated on a case-by-case basis.Sourcing ModelRecruitment at FIS works primarily on a direct sourcing model; a relatively small portion of our hiring is through recruitment agencies. FIS does not accept resumes from recruitment agencies which are not on the preferred supplier list and is not responsible for any related fees for resumes submitted to job postings, our employees, or any other part of our company.#pridepass

Engineer Principal, Software (SRE)

Principal Software Engineer (SRE)

15+ years in SRE and software engineering in public cloud; strong monitoring, CI/CD, scripting; Kubernetes; familiarity with Dynatrace/Splunk; Jenkins; containers.

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