Senior Backend Engineer - Payroll - EST

Mosaic.tech; United States; On-site; USD 170,000 - 220,000; Full time

Benefits offered by this job

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Job summary

HiBob is expanding its payroll product with a senior backend engineer who will own the design, development, testing, and deployment of backend services in a modern microservices setup. You will work with product managers and frontend engineers to deliver scalable APIs and customer-facing features for thousands of users.

Ideal candidates have 6+ years in backend engineering, strong relational database experience, and proficiency with AWS.

Qualifications

• 6+ years of professional backend software engineering experience.
• Experience building customer-facing SaaS products from inception to launch with thousands of users.
• Experience with relational databases like PostgreSQL, MySQL, etc.
• Excellent knowledge of software design and scalable architecture.
• Experience with testing methodologies – unit-testing, TDD, mocking, etc.
• Experience with AWS or an equivalent cloud platform.

Responsibilities

• Design, develop, and maintain highly scalable back-end systems for the Payroll product using a modern microservices architecture.
• Collaborate with product managers, front-end engineers, and other stakeholders to implement new features and ensure alignment with the overall product roadmap.
• Write clean, maintainable, and efficient code in Kotlin, Scala, or Java (or be eager to learn Kotlin).
• Build and optimize APIs to support seamless integrations across our platform.
• Participate in code reviews and provide constructive feedback to team members.
• Take ownership of the full development cycle, including technical design, implementation, testing, deployment, and monitoring.
• Work in a continuous delivery environment with automated QA processes to ensure robust and reliable releases.

Skills

Backend development

Relational databases

Testing & TDD

AWS / cloud platforms

Code reviews

SaaS product development

Team collaboration

Microservices architecture

Security & quality

Tools

PostgreSQL

MySQL

Kotlin/Java/Scala

Job description

It’s an exciting time to join HiBob. Salesforce is leading a $166 million investment in the company, supporting our vision to bring trusted people context into the AI-powered enterprise. As we accelerate our product, technology, AI, and innovation roadmap, you’ll have the opportunity to help shape what comes next.

As a Senior Backend Engineer on the team, you’ll have a key role in developing our Payroll product and its unique features, working closely with our Product team. You are passionate about software engineering and building a product end-to-end. You will be responsible for owning the dev cycle from the technical design, through coding and testing, to deployment and monitoring. We work in a true continuous delivery environment with fully automated QA processes on a microservices architecture, deploying to production dozens of times every day.

As an agentic AI company, we’re building intelligent software that takes action to help customers get work done—and embracing AI in how we build it.

Base salary for this role ranges from $170,000 - $220,000 per year plus benefits and stock options (ISOs).

Candidates must be physically located in the Eastern Time Zone to ensure sufficient working-hour overlap with our team in Europe and Israel.

• Physically located in the Eastern Time Zone---we cannot consider applicants outside EDT at this time.
• Hands-on experience using AI coding tools to develop, test, and debug backend software, with the judgment to validate generated code for quality, security, and maintainability.
• 6+ years of professional experience as a software engineer, strongly emphasizing backend development.
• Experience building customer-facing SaaS products from inception to launch with thousands of users.
• Experience collaborating with product managers, exercising sound judgment on when to advocate strongly, and confidently navigating trade-offs and negotiations.
• Experience with relational databases like PostgreSQL, MySQL, etc.
• Excellent knowledge of software design and scalable architecture.
• Experience with testing methodologies - unit-testing, TDD, mocking, etc.
• Experience with AWS or an equivalent cloud platform.
• Independent, fast learner, and excited about learning new technologies.
• Proactive team player with a desire to impact our team, our product, and our customers.

The following is a big plus:

• Experience with Kotlin, Java, or Scala.
• Experience developing a payroll/payments/HR product.

• Design, develop, and maintain highly scalable back-end systems for our Payroll product using a modern microservices architecture.
• Collaborate with product managers, front-end engineers, and other stakeholders to implement new features and ensure alignment with the overall product roadmap.
• Write clean, maintainable, and efficient code in Kotlin, Scala, or Java (or be eager to learn Kotlin).
• Build and optimize APIs to support seamless integrations across our platform.
• Participate in code reviews and provide constructive feedback to team members.
• Take ownership of the full development cycle, including technical design, implementation, testing, deployment, and monitoring.
• Work in a continuous delivery environment with automated QA processes to ensure robust and reliable releases.