Remote Mid Level Software Engineer Jobs in Wisconsin

Senior Software Engineer – Backend

Anywhere

Type: Permanent

Category: Engineer

Industry: Technology

Workplace Type: Remote

Reference ID: JN -052026-106925

Date Posted: 06/10/2026

Shortcut: http://careers.eliassen.com/IxJv6L

• Description

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Description:

Remote

Our client seeks a Senior Software Engineer focused on backend Java development to design, build, and maintain scalable, data-intensive systems that power core products. You will participate in all phases of product development including design, implementation, testing, deployment, and ongoing support. This is a full-time remote role.

This is a full-time, permanent opportunity, offering a competitive salary and comprehensive benefits package. Qualified applicants must be willing and able to work on a w2 basis.

Salary: $140,000 - $160,000/ yr. w2

Responsibilities:

• Own the full lifecycle of features from design through deployment and support.

• Design and build scalable, high-performance backend systems.

• Improve code architecture with a focus on performance, scalability, and maintainability.

• Write and review technical design documentation.

• Work with large, complex datasets and ensure data accuracy at scale.

• Collaborate closely with engineering teams to solve complex system challenges.

• Conduct thoughtful, high-quality code reviews.

• Mentor and support other engineers on the team.

• Contribute to improving engineering standards and team velocity.

Experience Requirements:

• 5–10+ years of backend software engineering experience, with strong expertise in Java.

• Deep knowledge of multi-threading and concurrency.

• Strong system design and distributed systems concepts.

• Experience with large-scale or high-volume data systems and data-intensive applications or pipelines.

• Proficiency with SQL and relational databases, including querying, schema design, and performance tuning.

• Demonstrated ability to build systems that operate at scale and high throughput.

• Ability to contribute effectively in a fast-paced, collaborative environment.

• Strong problem-solving, communication, and teamwork skills.

• Strongly preferred: experience with data-heavy or real-time systems, performance optimization, high-throughput applications, distributed systems, or event-driven architectures; exposure to time-series or industrial data environments.

Recruitment Transparency Notice

Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screening and hiring process. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team ( noreply@eliassen.com , 781-808-2924) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group’s use of these tools, including AI tools, as part of the application and hiring process.

Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.

W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.

If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:

· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.

· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.

If you have any indication of fraudulent activity, please contact fraud@eliassen.com .

About Eliassen Group:

Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients’ capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.

Eliassen is committed to building a diverse and inclusive team from a variety of backgrounds, perspectives, and skills. We are an Equal Opportunity and Affirmative Action Employer and all employment decisions are based on merit, performance, and business needs. Eliassen does not discriminate on the basis of race, color, gender identity or expression, sexual preference or orientation, sex (including pregnancy, childbirth, and related medical conditions), marital status, creed, religion, physical or mental disability, genetic information, military or veteran status, age, ancestry, national origin, citizenship status, prohibited criminal record inquiries of applicants and employees, or any other category protected by federal, state, or local laws.

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