


What you will be Doing
- You will abstract away complex data interactions with easy-to-use APIs that will power several mobile and web applications.
- You will also own, scale, and maintain the computational and storage infrastructure for the various micro-services and long-running jobs, designed and implemented by you and the team.
- We will look to you to make key decisions on the technology stack, architecture, networking, and security. We love working with bleeding-edge technology, especially if it improves the malleability, and simplicity of our deliverables.
What you need
- The ideal Backend Engineers are polyglots who are fluent in HTTP and core CS concepts such as algorithms, data structures, and programming paradigms, and always pick the right tools for the right job.
- They have a keen eye for common security vulnerabilities and how to act on them (example: DDOS attacks, SQL Injection etc.).
- They understand what it takes to work in a startup environment and know when to trade performance for simplicity.
- They fail fast, learn faster, and execute in time.
- Strong communication skills, get-things-done attitude, and empathy
- Strong sense of ownership, drive and obsessive attention to detail.
- Comfortable with iterative development practices and code reviews
- Previous experience as part of a product-oriented team is a plus
Technical Skillsets:
NodeJS + Javascript, GoLang, Typescript + Nodejs, Clojure/Haskell/F#/Scala (languages/environments)
Koa, Express, Play (frameworks)
Asynchronous Programming Frameworks (Akka, Nodejs, Tornado)
MongoDB, postgres, Bigtable, Dynamo (databases)
Apache Kafka, NATS, RabbitMQ, ZeroMQ (queues)
FunctionalProgramming, FRP (functional reactive)
microservices, multi-tenant, distributed-systems, distributed-computing, event-sourcing
Good to have Skillsets:
Clojure/Haskell/F#/Scala
Apache Kafka, NATS
FunctionalProgramming, FRP (functional reactive)
event-sourcing
Koa
Why you should consider this role seriously?
- We have an audacious vision of helping companies fight counterfeiting and managing their supply chain more efficiently
- We have built a product and solved problems for some of the largest brands in the country and tested platform at scale (With our tags present in over 50 Million products already). We have plans to grow 10x in the next 1 year
- Ownership of key problems. Fast-paced environment
- We are a well-balanced team of experienced entrepreneurs and are backed by top investors across India and the Silicon Valley (Venture Highway, Startup Buddy etc.)
- Competitive market salary
- Opportunity to work directly with the CEO, COO, CTO of the company
- A chance to interact with top-notch executives from multiple industries
- Open vacation policy (and we really mean it!)
- Open Pantry
- As a team, we love to travel :). An off-site every quarter
Planning to Apply? Consider this:
Make sure you go through this section very carefully before applying. Here are the most crucial aspects on which we evaluate on:
1: FIT: “We’re on a crusade for something greater than any one of us”!
We are a tight-knit team that works and plays together where ‘fit’ is the most important point that you need to keep in mind while evaluating us- we will be spending a majority of our time together, in office, on calls, even weekends (sometimes) so you’ll really need to assess whether this is the right place for YOU to be in. Are you able to relate to or feel passionate about the problems we’re solving?
2: INTENT: “You won’t just be working with us, you would be investing in us!”
‘Why’ do you want to work with us? Why an early stage startup? Why Original4Sure? We are an industrious team, working tirelessly to achieve our goals so the work hours will be long and with it will come with a steep learning curve. Joining an early stage startup also means you’ll be asked to take on new things with little guidance and you’ll have to figure stuff out on your own, and in doing so, help shape the future of the company. Does that sound scary, exciting, both?
3: CAPABILITY: “Get work done!”
As long as you are working as hard as you can and giving it your best all day, every day, we will get along just fine. No one ever built one of the most valuable businesses in the World without the core team having to make a few sacrifices along the journey. It could be lesser time spent with your family or loved ones or finding lesser time to do to watch TV shows! But that's a call you need to make.

About O4S
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Job Overview:
We are looking for a skilled Senior Backend Engineer to join our team. The ideal candidate will have a strong foundation in Java and Spring, with proven experience in building scalable microservices and backend systems. This role also requires familiarity with automation tools, Python development, and working knowledge of AI technologies.
Responsibilities:
- Design, develop, and maintain backend services and microservices.
- Build and integrate RESTful APIs across distributed systems.
- Ensure performance, scalability, and reliability of backend systems.
- Collaborate with cross-functional teams and participate in agile development.
- Deploy and maintain applications on AWS cloud infrastructure.
- Contribute to automation initiatives and AI/ML feature integration.
- Write clean, testable, and maintainable code following best practices.
- Participate in code reviews and technical discussions.
Required Skills:
- 4+ years of backend development experience.
- Strong proficiency in Java and Spring/Spring Boot frameworks.
- Solid understanding of microservices architecture.
- Experience with REST APIs, CI/CD, and debugging complex systems.
- Proficient in AWS services such as EC2, Lambda, S3.
- Strong analytical and problem-solving skills.
- Excellent communication in English (written and verbal).
Good to Have:
- Experience with automation tools like Workato or similar.
- Hands-on experience with Python development.
- Familiarity with AI/ML features or API integrations.
- Comfortable working with US-based teams (flexible hours).


Duration: 6 months with possible extension
Location: Remote
Notice Period: Immediate Joiner Preferred
Experience: 4-6 Years
Requirements:
- B Tech/M Tech in Computer Science or equivalent from a reputed college with a minimum of 4 – 6 years of experience in a Product Development Company
- Sound knowledge and application of algorithms and data structures with space and me complexities
- Strong design skills involving data modeling and low-level class design
- Good knowledge of object-oriented programming and design patterns
- Proficiency in Python, Java, and Golang
- Follow industry coding standards and be responsible for writing maintainable/scalable/efficient code to solve business problems
- Hands-on experience of working with Databases and the Linux/Unix platform
- Follow SDLC in an agile environment and collaborate with multiple cross-functional teams to drive deliveries
- Strong technical aptitude and good knowledge of CS fundamentals
What will you get to do here?
- Coming up with best practices to help the team achieve their technical tasks and continually thrive in improving the technology of the product/team.
- Driving the adoption of best practices & regular Participation in code reviews, design reviews, and architecture discussions.
- Experiment with new & relevant technologies and tools, and drive adoption while measuring yourself on the impact you can create.
- Implementation of long-term technology vision for your team.
- Creating architectures & designs for new solutions around existing/new areas
- Decide on technology & tool choices for your team & be responsible for them.
Desired Experience
3+ years
Job Description
What You’ll Do
- Design financial systems for scale. Measure, plan, iterate.
- Writing reusable, testable, and efficient code
- Design and implementation of low-latency, high-availability, and performant applications
- Setup and own the engineering architectures built around event sourcing, application sharding, database sharding, service communication mesh, etc.
- The tech: Go, Google Cloud Spanner, Kafka, Redis
What you bring to the table
- 3+ years of experience. Relevant experience is preferred.
- Knowledge of 2 common programming languages - Java & Node / Rust /Python & Go
- Comfortable in linux command line, AWS or GCP
- Strong unit test and debugging skills
- Great communication skills
Bonus if you have…
- Love building great products and engineering systems from scratch
- Are a Self-starter, Hustler and Curious to Learn
- Have an understanding of fundamental design principles behind a scalable application
- Thrive in an early-stage startup environment with less stability and more ambiguity
- Have an interest in financial products and/or cryptocurrency
Our new vision “Reimagining a better-shared world” and mission “Bringing human expertise to tech for delivering purposeful solutions that amplify value” is at the heart of our transformation approach, powered by cloud, platform mindset, and engagement. Our motto “Let’s make digital change happen” is our commitment to empower our clients to succeed in this digital world. While our values – integrity, teamwork, the pursuit of excellence, committed, customer-centric, and thought-leadership, defines our character and behavior.
This person MUST have:
Node JS, REST, Mongo DB
Experience:
Min 3 year experience


Job Description:
- Develop, test, and maintain applications to specified designs & standards in Laravel.
- Develop & implement modern web services using service-oriented architecture, RESTful APIs, and SOAP.
- Write and execute unit tests.
- Implement front-end interfaces & experiences with modern HTML/CSS/jQuery.
- Test, troubleshoot, and optimize application components for maximum speed, security, stability, and scalability.
Skills & Experience:
- 4+ years of experience in Laravel.
- Experience in Core PHP using MVC Architecture.
- Ability to write APIs including Restful APIs.
- Knowledge of database operations with MySQL/MariaDB, Stored procedures.
- Knowledge of front-end technologies (HTML5, CSS3, JavaScript, jQuery, etc.).
- Knowledge and experience of OOPS.
- Knowledge of engineering practices like CI-CD.
- Strong documentation, communication, and team collaboration skills.
- Working knowledge of Lumen (preferred).
- Must have full knowledge of latest version of Laravel & PHP
We are looking for a Software Engineer responsible for the development of backend APIs, services. Your primary focus will be the development of REST APIs and Unit-tests for code. You will be working alongside other engineers and developers working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and the creation of quality products are essential.
Responsibilities:
- Developing and maintaining all server-side network components.
- Ensuring optimal performance of the central database and responsiveness to front-end requests.
- Collaborating with front-end developers on the integration of elements.
- Developing high-performance applications by writing testable, reusable, and efficient code.
- Implementing effective security protocols, data protection measures, and storage solutions.
- Running diagnostic tests, repairing defects, and providing technical support.
- Documenting Node.js processes, including database schemas, as well as preparing reports.
- Recommending and implementing improvements to processes and technologies.
- Keeping informed of advancements in the field of Node.js development.
Requirements:
- Sound knowledge in web application development using Node, JavaScript.
- Designing and creating RESTful APIs.
- 3-4 years of experience in node and javascript.
- Experience with databases like Elasticsearch, Redis.
- Experience using best coding practices, design patterns.
- Must have very good analytical skills.
- Proficient understanding of code versioning tools such as Git.
- Familiarity with continuous integration.
- Basic Knowledge in JIRA.
- Good to have familiarity with Docker.
- Good to have knowledge in Kafka, WSO2 Siddhi.

What is the role?
You will be responsible for developing features on the application and integrations end to end. You will be working closely with the Technical Team to come up with high-quality, resilient, and highly performant applications.
Key Responsibilities
- Design and develop SaaS-based applications based on microservices architecture.
- Work on the core backend and ensure it meets the performance benchmarks.
- API and Integrations.
- Designing and developing APIs for the front end to consume.
- Constantly improve the architecture of the application by clearing the technical backlog.
- Meeting both technical and consumer needs.
- Staying abreast of developments in web applications and programming languages.
- Work on the front end with ReactJS is a plus point.
What are we looking for?
- An enthusiastic individual with the following skills. We are open to promising candidates who are passionate about their work and are team players.
- A subset of the below skills should be fine as long as you are good.🙂
- OAuth, API Integrations.
- Agnostic/Polyglot with multiple tech stacks.
- Worked on open source technologies – NodeJS, ReactJS, MySQL, NoSQL, MongoDB, CouchDB, DynamoDB, Clickhouse, Kafka
- Backend exposure – good knowledge of building and integrating APIs
- Efficient in building microservices in combining server & front-end.
- Knowledge of cloud architecture.
- Excellent knowledge and understanding skills on OAuth.
- Should have sound working experience with relational and columnar DB.
- Should be innovative and communicative in approach.
- Will be responsible for functional/technical track of a project.
Who will you work with?
You will closely work with the engineering team and support the Product Team of Compass.
What can you look for?
A wholesome opportunity in a fast-paced environment will enable you to juggle between concepts yet maintain the quality of content, interact, share your ideas, and have loads of learning while at work. Work with a team of highly talented young professionals and enjoy the benefits of being at Xoxoday.
We are
A fast-growing SaaS commerce company based in Bangalore with offices in Delhi, Mumbai, SF, Dubai, Singapore, and Dublin. We have three products in our portfolio: Plum, Empuls, and Compass. Xoxoday works with over 1000 global clients. We help our clients engage and motivate their employees, sales teams, channel partners, or consumers for better business results.
Way forward
We look forward to connecting with you. As you may take time to review this opportunity, we will wait for a reasonable time of around 3-5 days before we screen the collected applications and start lining up job discussions with the hiring manager. However, we assure you that we will attempt to maintain a reasonable time window for successfully closing this requirement. The candidates will be kept informed and updated on the feedback and application status.
About the Company
Based in California’s Silicon Valley, WebShar is focused on enabling innovative teams to bring their ideas to life. WebShar provides software development consulting services to innovative companies around the world. Through years of cutting edge technical expertise, the WebShar team utilizes their extensive knowledge of modern software development methodologies to help companies create innovative software solutions.
About the Job Role
Skills
Primary
- Java, J2EE, Spring MVC
- Hibernate or other ORM
- Web technology and security, REST framework
- Any one UI technology and ready to learn a new one.
- Database knowledge (MySQL, Oracle, Postgres)
- Unit testing frameworks
- Version Control (Eg., Git)
Good To Have
- Microservices architecture implementation using docker and kubernetes
- Web technologies like HTML, CSS and Javascript
- Python, Shell Scripting
Key Responsibilities
- Identify and analyze user requirements
- Prioritize, assign and execute tasks throughout the software development life cycle
- Document development phases
- Design database architecture
- Develop Java EE applications
- Write well-designed, efficient code
- Review, test and debug team members’ code
- Schedule product releases with internal teams
- Ensure our applications are secure and up-to-date
- Stay up-to-date on emerging technologies
Requirements
- 6 to 8 years of work experience as a Senior Java Developer or similar role
- Experience designing, building and testing Java EE applications
- In-depth knowledge of popular Java frameworks like Spring MVC
- Experience with Object-Oriented Design (OOD)
- Good delegation and time management skills
- Problem-solving abilities
- BSc in Computer Science, Engineering or relevant field




