Service Mapping

Introduction

About Us:

Mercari is a Japan-based C2C marketplace company founded in 2013 with the mission to “Create value in a global marketplace where anyone can buy & sell.” From being the first tech unicorn from Japan before its IPO in 2018 we have come a long way towards becoming a global player and continuously and diligently work towards our transformation journey with a strong focus on our mission.

Since its inception, Mercari Group has worked to grow its services, investing in both our people and technology. Over time Mercari has expanded from being the top player in the C2C marketplace in Japan to new geographies like the U.S. We have also successfully launched new businesses such as Merpay, which is a mobile payment service platform with a vision to create a society where anyone can realize their dreams through a new ecosystem centered not only on payment service but also on credit. Today, Mercari Group is made up of multiple subsidiary businesses including logistics, B2C platform, blockchain, and sports team management.

For our services to be utilized by people worldwide; however, there is still a mountain of work ahead of us. This endeavor naturally requires the capability of the best talent and minds, and that is exactly the reason for us to launch the India Center of Excellence. With your help, we will continue to take on the world stage and strive to grow into a successful global tech company.

Our Culture:

To achieve our mission at Mercari, our organization and each of our employees share the same values and perspectives. Our individual guidelines for action are defined by our four values: Go Bold, All for One, Be a Pro and Move Fast. Our organization is also shaped by our four foundations: Sustainability, Diversity & Inclusion, Trust & Openness, and Well-being for Performance. Regardless of how big Mercari gets, the culture will remain essential to achieving our mission and something we want to preserve throughout our organization. We invite you to read the Mercari Culture Doc which summarizes the behaviors and mindset shared by Mercari and its employees. We continue to build an environment where all of our members of diverse backgrounds are accepted and recognized, and where they can thrive while holding dear to Mercari’s culture.

Work Responsibilities

• Machine learning engineers working in the Recommendation domain develop the functions and services of the marketplace app Mercari through the development and maintenance of machine learning systems like Recommender systems while leveraging necessary infrastructure and companywide platform tools. 
• Mercari is actively applying advanced machine learning technology to provide a more convenient, safer, and more enjoyable marketplace. Machine learning engineers use the cloud and Kubernetes to operate and improve machine learning systems.

Bold Challenges

• We are looking for people who are interested in our services, mission, and values, and want to work where engineers can go bold, use the latest technology, make autonomous decisions, and take on challenges at a rapid pace.
• Develop and optimize machine learning algorithms and models to enhance recommendation system to improve discovery experience of users
• Collaborate with cross-functional teams and product stakeholders to gather requirements, design solutions, and implement features that improve user engagement
• Conduct data analysis and experimentation with large-scale data sets to identify patterns, trends, and insights that drive the refinement of recommendation algorithms
• Utilize machine learning frameworks and libraries to deploy scalable and efficient recommendation solutions.
• Monitor system performance and conduct A/B testing to evaluate the effectiveness of features.
• Continuously research and stay updated on advancements in AI/machine learning techniques and recommend innovative approaches to enhance recommendation capabilities.

Minimum Requirements:

• Over 5-9 years of professional experience in end-to-end development of large-scale ML systems in production
• Strong experience demonstrating development and delivery of end-to-end machine learning solutions starting from experimentation to deploying models, including backend engineering and MLOps, in large scale production systems.
• Experience using common machine learning frameworks (e.g., TensorFlow, PyTorch) and libraries (e.g., scikit-learn, NumPy, pandas)
• Deep understanding of machine learning and software engineering fundamentals
• Basic knowledge and skills related to monitoring system, logging, and common operations in production environment
• Communication skills to carry out projects in collaboration with multiple teams and stakeholders

Preferred skills:

• Experience developing Recommender systems utilizing large-scale data sets
• Basic knowledge of enterprise search systems and related stacks (e.g. ELK)
• Functional development and bug fixing skills necessary to improve system performance and reliability
• Experience with technology such as Docker and Kubernetes
• Experience with cloud platforms (AWS, GCP, Microsoft Azure, etc.)
• Microservice development and operation experience with Docker and Kubernetes
• Utilizing deep learning models/LLMs in production
• Experience in publications at top-tier peer-reviewed conferences or journals

Employment Status

Full-time

Office

Bangalore

Hybrid workstyle

• We believe in high performance and professionalism. We work from office for 2 days/week and work from home 3 days/week
• To build a strong & highly-engaged organization in India, we highly encourage everyone to work from our Bangalore office, especially during the initial office setup phase
• We will continue to review and update the policy to address future organizational needs

Work Hours

• Full flextime (no core time)

*Flexible to choose working hours other than team common meetings

Media

Owned Media

• Mercari Engineering Portal
• AI at Mercari portal
• Mercan - Introduces the people that make Mercari
• Mercari US Blog

Related Articles

• Development Platforms and Platformers: On Rising to the Global Standard Ken Wakasa, Mercari CTO | mercan
• “I'm Not a Talented Engineer” Insists the Member-Turned-Manager Revamping Our Internal CS Tool | mercan
• Personalize to globalize:How Mercari is reshaping their app, their company, and the world | mercan
• The Providers of the Safe and Secure Mercari Experience: The TnS Team, Introduced by Its Members! | mercan

Job Title: Full Stack Developer

Company: Just Gold LLC

Location: Remote

Experience: 1-5 years

Job Description:

We're seeking a highly skilled Full Stack Developer to join our team at Just Gold LLC. As a Full Stack Developer, you'll be responsible for designing, developing, and maintaining our web and mobile applications using a range of technologies, including Node.js, MongoDB, React Native, React.js, Next.js, Java, AWS, Tailwind CSS, HTML/CSS, and JavaScript.

Responsibilities:

- Develop high-quality, scalable, and maintainable code for our web and mobile applications

- Collaborate with cross-functional teams to identify and prioritize project requirements

- Design and implement new features, components, and functionality

- Troubleshoot and resolve technical issues

- Participate in code reviews and contribute to the improvement of the codebase

- Stay up-to-date with industry trends and emerging technologies

Required Technologies:

- Node.js

- MongoDB

- React Native

- React.js

- Next.js

- Java

- AWS

- Tailwind CSS

- HTML/CSS

- JavaScript

Requirements:

- 1-5 years of experience in full-stack development

- Strong proficiency in JavaScript and its ecosystem

- Experience with Node.js, MongoDB, and React.js

- Familiarity with React Native and Next.js

- Knowledge of Java and AWS

- Understanding of front-end development principles and best practices

- Experience with version control systems (e.g., Git)

- Excellent problem-solving skills and attention to detail

- Strong communication and collaboration skills

Nice to Have:

- Experience with agile development methodologies

- Familiarity with containerization (e.g., Docker)

- Knowledge of cloud-based services (e.g., AWS Lambda)

- Understanding of security best practices and compliance

What We Offer:

- Competitive salary and benefits package

- Opportunity to work on exciting projects with a talented team

- Flexible remote work arrangement

- Professional development opportunities

- Collaborative and dynamic work environment

• Professional experience in enterprise java software development using Spring MVC framework , RESTful  APIs and SOA
• Experience working in Cloud(AWS)
• Outstanding problem solving skills
• API Development experience
• Exposure to monitoring tools such as ELK, Splunk
• Experience with Selenium for UI automated tests written in Cucumber or Scala
•  Able to handle day-to-day challenges and owning the resolution of issues as they arise.

1. Experience in HTML, CSS and Bootstrap library is required.
2. Experience in Python Programming. Experience in Pandas and Numpy Libraries.
3. Experience with Django Framework & REST API.
4. Experience Flask, Microservices
5. Experience in FAST API would be added advantage.
6. Exposure in converting ML models to Microservices and exposing them as API
7.  GRPC development

• Review requirements, specifications, and technical design documents to provide timely and meaningful feedback
• Create detailed, comprehensive, and well-structured test plans and test cases
• Estimate, prioritize, plan and coordinate testing activities
• Design, develop and execute automation scripts using open source tools
• Identify, record, document thoroughly, and track bugs
• Perform thorough regression testing when bugs are resolved
• Develop and apply testing processes for new and existing products to meet client needs
• Liaise with internal teams (e.g. developers and product managers) to identify system requirements
• Monitor debugging process results
• Investigate the causes of non-conforming software and train users to implement solutions
• Track quality assurance metrics, like defect densities and open defect counts
• Stay up-to-date with new testing tools and test strategies

• Knowledge of the quality assurance and testing concepts, methodologies, metrics, automated testing frameworks, and documentation standards.
• Should have knowledge/experience in creating Test Plans, Test scripts, Test cases.
• Collaborate well with others. Ability to translate technical concepts into easy-to-understand terms.
• Preferred knowledge/understanding of different mobile operating systems (Android, iOS)
• Preferred knowledge/experience testing both front-end (GUI)and back-end (database query) applications                                                        
• Experience using Git / Github

• Developing front end website and application architecture.
• Designing user interactions on web pages.
• Developing back-end website and applications.
• Creating servers and databases for functionality.
• Ensuring cross-platform optimization for mobile phones.
• Ensuring responsiveness of applications.
• Working alongside graphic designers for web design features.
• Seeing through a project from conception to finished product.
• Designing and developing APIs.
• Meeting both technical and consumer needs.
• Staying abreast of developments in web applications and programming languages.