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Software Engineer Ii Backend Jobs (NOW HIRING)

They are seeking a Backend Software Engineer II to build robust frameworks and features, collaborate with various teams, and contribute to the development of scalable systems that enhance user ...

We are looking for inquisitive, well-rounded Backend engineers to join our Core, Monetization, and ... This role will need to be in the office for in-person collaboration 1-2 times every 6-months and ...

WHOOP is a company focused on health and fitness technology, and they are seeking a Software Engineer II to develop scalable and reliable backend services. The role involves building and optimizing ...

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Software Engineer Ii Backend information

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$60.5K

$147.7K

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How much do software engineer ii backend jobs pay per year?

As of Jul 26, 2026, the average yearly pay for software engineer ii backend in the United States is $147,662.00, according to ZipRecruiter salary data. Most workers in this role earn between $124,000.00 and $172,000.00 per year, depending on experience, location, and employer.

What is a Software Engineer II Backend job?

A Software Engineer II Backend is a mid-level engineering role focused on building and maintaining server-side applications, databases, and APIs. They work with programming languages like Java, Python, or Node.js to develop scalable and efficient backend systems. Responsibilities often include optimizing performance, debugging issues, and collaborating with frontend developers and other teams. This role requires a strong understanding of data structures, algorithms, and cloud services.

What are the key skills and qualifications needed to thrive in the Software Engineer Ii Backend position, and why are they important?

A Software Engineer II Backend typically requires solid proficiency in programming languages like Java, Python, or Node.js, experience with database technologies, and a bachelor’s degree in computer science or related fields. Familiarity with version control systems (such as Git), cloud services, and CI/CD pipelines is often expected; certifications in cloud platforms like AWS or Google Cloud can be beneficial. Strong problem-solving abilities, teamwork, and effective communication skills help individuals excel in collaborative, fast-paced environments. These competencies ensure the delivery of robust, scalable backend solutions, contributing to high-performing software teams and successful project outcomes.

What are the typical projects and collaborations involved in a Software Engineer II Backend role?

As a Software Engineer II Backend, you’ll work on building and maintaining server-side applications, API development, database management, and optimizing performance for scalable systems. Collaboration is common with frontend developers, product managers, QA engineers, and DevOps teams to deliver complete features and resolve issues. Project work often involves participating in code reviews, designing system architecture, and contributing to sprint planning and troubleshooting sessions. This dynamic environment offers opportunities to learn from experienced colleagues and further develop your technical expertise.

More about Software Engineer Ii Backend jobs
What states have the most Software Engineer Ii Backend jobs? States with the most job openings for Software Engineer Ii Backend jobs include:
Infographic showing various Software Engineer Ii Backend job openings in the United States as of July 2026, with employment types broken down into 1% Locum Tenens, 1% As Needed, 91% Full Time, 2% Part Time, and 5% Contract. Highlights an 79% Physical, 4% Hybrid, and 17% Remote job distribution, with an average salary of $147,662 per year, or $71 per hour.
Software Engineer II (Backend, Healthcare)

Software Engineer II (Backend, Healthcare)

WHOOP

Boston, MA • On-site

Full-time

Posted 9 days ago


Job description

Job Summary:
WHOOP is on a mission to unlock human performance and healthspan through wearable technology. As a Software Engineer II (Backend) in the Healthcare group, you will develop and maintain backend services that drive health outcomes and connect users to data science algorithms, while collaborating with cross-functional teams.
Responsibilities:
• Contribute to engineering efforts within a cross-functional team, collaborating with designers, product managers, other engineers, and our Digital Health team to refine and advance the WHOOP platform.
• Develop and maintain robust backend services using Java, Kafka, Postgres, and other AWS technologies, ensuring stability and performance.
• Contribute to the ideation, technical design, and implementation of new features and platforms, transforming complex requirements into reliable, scalable solutions
• Work on scaling challenges that span multiple systems and demand high availability and reliability.
• Write clean, testable, and maintainable code, while participating in code reviews and documentation practices.
Qualifications:
Required:
• Professional experience in backend development, with a strong foundation in object-oriented programming, API design, and relational databases (RESTful APIs, Postgres)
• Familiarity with asynchronous processing systems (Kafka, SQS)
• Experience writing automated tests and documenting code for a variety of audiences
• A passion for approaching large-scale problems guided by data-driven insights and a commitment to agile, iterative development
• A proactive, collaborative team player, eager to take on new challenges, continuously learn, and adapt in a fast-paced, data-informed environment
Company:
WHOOP provides wearable fitness technology and a subscription platform that tracks physiological data for health and performance insights. Founded in 2012, the company is headquartered in Boston, USA, with a team of 501-1000 employees. The company is currently Late Stage.

Whoop logo

About Whoop

Sourced by ZipRecruiter

At WHOOP, we're on a mission to unlock human performance. WHOOP empowers users (Olympians, Professional Athletes, Fitness Enthusiasts, etc) to perform at a higher level through a deeper understanding of their bodies and daily lives.

Industry

Fitness and sports centers

Company size

501 - 1,000 Employees

Headquarters location

Boston, MA, US

Year founded

2012