Senior Backend Software Engineer

Top Hat is hiring for a Senior Backend Software Engineer on our Aktiv Platform team. This is a great opportunity to drive force behind the technical excellence of our ecosystem. You will operate with a high degree of autonomy, leading the delivery of complex features and ensuring the stability of our high-traffic systems. This role is designed for an engineer who is not only a master of their craft in Java and Spring Boot but also a dedicated mentor and a proactive problem-solver. You will: Independent Implementation: Lead the full software development lifecycle for complex features, including implementation, comprehensive testing, and debugging of robust code. Technical Leadership: Drive the technical delivery of projects, influencing architectural decisions and ensuring solutions are scalable, maintainable, and aligned with long-term business goals. Mentorship & Guidance: Actively mentor junior and intermediate engineers, providing constructive feedback through code reviews and documentation to support their professional growth. Operational Excellence: Proactively identify operational risks and control deficiencies. Drive discussions regarding system redundancy, disaster recovery, and service availability. Cross-Functional Collaboration: Partner closely with Frontend Engineers, Product Managers, and Designers to build cohesive, user-centric solutions. Process Innovation: Identify opportunities for automation and suggest UI improvements to enhance the overall user experience and internal delivery efficiency. You are: Expert Java Foundation: Extensive experience with Java and a deep understanding of core programming principles and best practices. Proven expertise in Spring Boot for building scalable microservices and experience managing data with MongoDB. Enterprise Experience: A track record of working on enterprise-level software systems that require high reliability and performance. Architectural Vision: Ability to design and implement forward-thinking architectures that balance short-term value with long-term sustainability. Quality Focused: Strong commitment to delivering testable, observable, and maintainable code. Preferred Experience: High-Traffic Systems: Experience designing and maintaining systems that handle high volumes of traffic and parallel connections. Open Source Passion: A demonstrated passion for contributing to or leveraging open-source technologies. UI/UX Awareness: A keen eye for user interface improvements and the ability to contribute to frontend-related technical discussions. Infrastructure & Cloud: Familiarity with cloud platforms (AWS/GCP) and containerization tools like Jenkins, Docker, or Kubernetes. Why team members love working at Top Hat: A noble mission that creates meaningful, fulfilling work A team that cares deeply for customers and for each other Flexible, remote first work environment Professional learning and development for all role levels An awesome and welcoming Toronto HQ Competitive health benefits that start on day one A management team focused on performance, growth, engagement and connection Our winning strategy and market potential Innovative PTO policy with lots of time and space for self-care Passionate customers that believe in us—and what we do A chance to work with new tech like generative AI—and see the customer impact

Lead the full software development lifecycle for complex backend features while ensuring the stability of high-traffic systems. Provide technical leadership and mentorship to junior engineers to drive architectural excellence and operational stability.

Requires expert-level proficiency in Java and Spring Boot with experience managing data using MongoDB. Candidates should have a proven track record of building scalable enterprise-level software and designing sustainable architectures.

• Health Benefits • Professional Learning And Development • Flexible Remote First Work Environment • Innovative PTO Policy

Identified from the job description. Confirm important requirements above.

• Java
• Spring Boot
• MongoDB
• Microservices
• System Architecture
• Technical Leadership
• Mentorship
• AWS
• GCP
• Docker
• Kubernetes
• Jenkins
• Software Development Lifecycle
• Unit Testing
• Debugging
• API Design
• Market Potential
• Cross-Functional Collaboration
• Control Deficiency Management
• Constructive Feedback
• Java (Programming Language)
• Amazon Web Services
• Automation
• Management
• Containerization
• Code Review
• Software Development Life Cycle
• Disaster Recovery
• Front End Design
• Scalability
• Innovation
• Problem Solving
• Operational Excellence
• Software Engineering
• Software Systems
• Testability
• User Interface (UI)
• User Experience (UX)
• Reliability
• Docker (Software)

• Software
• Technology
• Engineering
• Back End Software Engineer
• Software Developer / Engineer
• Software Developers

Minimum experience

5+ years

Posting language

English

Working hours

40 hours per week

Location requirements

Country, Canada