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Senior Backend Engineer - Ruby on Rails

Josys
Bangalore
5 - 8 Years

Posted on: 14/01/2026

Job Description

Description :

About JOSYS :


Josys, a dynamic B2B SaaS platform startup, has embarked on a mission to revolutionize IT operations globally, following an exceptional launch in Japan and securing $125 million in Series A and B funding.

Our platform enables businesses to conquer the complexities of work-from-anywhere setups, rapid digital transformation, and the proliferation of SaaS applications by simplifying, optimizing, and securing their IT operations.

With a presence in 9 countries, including Japan, India, and the USA, our cutting-edge product technology center is located in Bengaluru, India.

As we continue our rapid expansion, we aim to double our full-time employee headcount in 2024, enhancing our capacity to innovate and deliver.

Josys was spun off from RAKSUL, a celebrated Japanese unicorn and Forbes Startup of the Year 2018, which is renowned for driving transformation through three pioneering B2B e-commerce platforms.

About The Role :

We are looking for a skilled Senior Software Engineer with hands-on Ruby on Rails expertise to join our team.

The successful candidate will be responsible for developing and maintaining the back-end infrastructure of our B2B SaaS product.

The ideal candidate should have a strong understanding of software architecture, database design, and server-side programming languages.

Additionally, the candidate should have experience working with cloud-based infrastructure (AWS, preferably) and be able to develop highly scalable and secure systems.

Key Responsibilities :

- Collaborate with the development team, product managers, and designers to understand business requirements and contribute to technical specifications and software solutions.

- Assist in designing, developing, testing, and deploying back-end components of web applications.

- Work with front-end engineers to develop APIs that facilitate smooth data flow and system interoperability.

- Optimize code, conduct testing, and following best practices to ensure the reliability, performance, and security of the application.

- Learn and contribute to the development and maintenance of cloud-based infrastructure, preferably using AWS, ensuring scalability, high availability, and disaster recovery.

- Collaborate with cross-functional teams to ensure successful product launches and provide support when needed.

- Participate actively in Agile development practices, including sprint planning, stand-ups, and retrospectives.

- Contribute to the refinement of user stories, provide effort estimations, and prioritize tasks to ensure timely delivery.

- Participate in code reviews to maintain code quality, receive constructive feedback, and adhere to best practices.

- Stay updated with industry trends and emerging technologies, evaluating their potential benefits for the product and the development team.

- Actively contribute to continuous improvement initiatives by suggesting process enhancements and implementing approved changes.

Requirements / Qualifications :

- Candidate should have 5+ years of Ruby on Rails backend development experience.

- Strong IC (individual contributor) is required for the role, who can join any existing project and start contributing within a weeks time.

- Can build and integrate using REST APIs in rails.

- Has experience working on async processors like Sidekiq / Resque / ActiveJob / Shoryuken.

- Understands rails object oriented programming concepts.

- Familiarity with front-end technologies such as HTML, CSS, and JavaScript is a plus.

- Exposure to cloud-based infrastructure, preferably AWS services, and a strong desire to learn about scalable and secure system development.

- Effective problem-solving in ambiguous and complex technical scenarios.

- Strong computer science fundamentals and automation testing technologies.

- Focus on customer satisfaction and holistic user experience.

- Excellent communication, collaboration, and mentoring abilities.


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