- Must be from good companies and have been working on high Scale of Traffic.
- Proficiency in engineering practices and writing high quality code, with expertise Go Langauge
- Experience building microservices.
- Strong knowledge of data structures, algorithms, and designing for performance
- Good knowledge of cloud technologies like AWS/Google Cloud/Azure Proficient with RDBMS

About Datamatics Global Services Limited
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About OOLIO
Founded in 2019, Oolio has rapidly grown into Australia’s largest hospitality tech provider, trusted by industry giants like Star Casinos. Our innovative solutions empower businesses to streamline operations, enhance guest experiences, and drive revenue growth.
With a global footprint, we’ve established offices in the UK, US, and New Zealand, delivering cutting-edge technology to some of the world’s most dynamic hospitality brands. At Oolio, we’re not just building software - we’re shaping the future of hospitality with innovation, agility, and a passion for excellence.
As a leading hospitality technology company, we deliver solutions that help restaurants, cafes, and food service businesses streamline operations, integrate ordering and payments, and enhance customer experiences. Our platform is built on modern cloud-native technologies and follows an event-driven architecture, enabling high scalability and reliability.
Responsibilities
- Design, develop, and maintain scalable and high-performance web and mobile applications.
- Work across the stack with Go, React and Node.js.
- Working understanding of React Native is a plus.
- Architect and optimize APIs and microservices to ensure reliability, scalability, and security.
- Deploy, monitor, and manage cloud infrastructure using Kubernetes and AWS.
- Collaborate with product managers, designers, and other engineers to build seamless user experiences.
- Conduct code reviews, mentor junior developers, and promote best practices in software development.
- Continuously improve system performance, observability, and developer productivity.
- Troubleshoot and resolve production issues, ensuring uptime and reliability.
Requirements
- 6+ years of experience as a Backend Engineer, working on production-grade applications.
- Strong proficiency in Golang (5+ yrs) for back-end development. Experience with React Native is a plus.
- Experience with Reactjs or Nodejs is a plus.
- Solid understanding of microservices architecture and API development.
- Experience with Kubernetes, Docker, and cloud platforms (AWS) - 4+ yrs.
- Knowledge of databases (SQL and NoSQL) such as PostgreSQL and DynamoDB.
- Familiarity with CI/CD pipelines and DevOps practices.
- Strong problem-solving and analytical skills.
- Built offline-first applications.
- Excellent communication and teamwork abilities.
Nice-to-Have
- Experience in the POS or payments industry.
- Knowledge of GraphQL and gRPC.
- Familiarity with event-driven architecture (Kafka, RabbitMQ, etc.).
- Exposure to performance tuning and high-traffic system optimizations.
What We Offer
- Competitive salary and benefits package.
- Hybrid work model with flexibility.
- Opportunity to work on cutting-edge technology in a fast-growing industry.
- A collaborative and dynamic work environment with a talented global team.
- Career growth opportunities and ongoing learning support.
Job Title: Golang Developer
Location: Kolkata
Job Type: Full-time
Working Days: 5 Days (Rotational off)
About the Role:
We are seeking a skilled Golang Developer with experience in Golang, Node.js, WebSocket
communication, and API development. In this role, you will work closely with our development
team to design, develop, and maintain high-performance backend systems and real-time
applications.
Key Responsibilities:
Design, build, and maintain efficient, reusable, and reliable Golang code.
Develop scalable APIs and microservices.
Integrate and build real-time communication using WebSocket protocols.
Collaborate with frontend developers and other team members to establish objectives
and design more functional, cohesive systems.
Write clean, maintainable, and well-documented code.
Optimize applications for maximum performance, scalability, and security.
Participate in code reviews, contribute to team knowledge, and continuously improve
development processes.
Troubleshoot, debug, and upgrade existing systems.
Occasionally work with Node.js services and modules when needed.
Required Skills and Qualifications:
Min 3+ years of experience in backend development with Golang.
Solid understanding of Node.js and JavaScript/TypeScript.
Hands-on experience with WebSocket integration and real-time applications.
Strong knowledge of RESTful APIs, API design principles, and API documentation. Experience with relational and NoSQL databases (e.g., MySQL, PostgreSQL, MongoDB).
Good understanding of concurrent programming and microservices architecture.
Familiarity with cloud platforms (AWS, GCP, Azure) is a plus.
Knowledge of containerization tools like Docker and Kubernetes is a plus.
Strong problem-solving skills, attention to detail, and a proactive attitude.
- 4+ years exp with solid backend/engineering experience.
- Knowledge of data structures and an eye for architecture.
- Solid CS fundamentals, fluent in multi-threaded and asynchronous programming, a strong inclination for architecting at scale.
- Excellent technical design, problem-solving, debugging, and communication skills.
- Rapid prototyping worked on distributed systems at scale.
- Basic knowledge of SQL as well as NoSQL databases.
- Proficient in Golang, it's design, and concurrency patterns.
Requirement:
- Bachelor’s Degree or equivalent degree in computer science.
- Min 1 year of experience in Backend Development.
- Experience in Golang is a must.
- Experience in creating and dealing with REST API and socket technology.
- Working Knowledge of RabbitMQ and Kafka.
- Knowledge of both SQL and NoSQL databases, along with Redis and elastic search.
- Working knowledge of network communication, TCP, UDP, HTTP, etc
Roles and Responsibilities:
- Participate in the entire application lifecycle, focusing on coding and debugging.
- Write clean code to develop functional web applications.
- Troubleshoot and debug applications.
- Perform UI tests to optimize performance.
- Manage cutting-edge technologies to improve legacy applications.
- Collaborate with Front-end developers to integrate user-facing elements with server-side logic.
- Gather and address technical and design requirements.
- Provide training and support to internal teams.
- Build reusable code and libraries for future use.
- Liaise with developers, designers, and system administrators to identify new features.
- Follow emerging technologies.
- Optimizing multiple producers and multiple consumer systems.
- Develop a Fault-tolerant application design.
Primary Responsibilities
- Design, architect and develop advanced software solutions in a cross functional Agile team supporting multiple projects and initiatives
- Collaborate with product owners and/or the business on requirements definition, development of functional specifications, and design
- Collaborate on or lead development of technical design and specifications as required
- Code, test and document new applications as well as changes to existing system functionality and ensure successful completion
- Take on leadership roles as needed
Skills & Requirements
- Bachelor’s Degree required, preferably in Computer Science or related field
- 3+ years of software development experience using GoLang/Java programming language
- Experience with cloud technologies (AWS/Azure/GCP/Pivotal Cloud Foundry/any private cloud) and containerization is required
- Experience with a micro-services architecture is a plus
- Excellent communication, collaboration, reporting, analytical and problem solving skills
- Experience with PostgreSQL or other Relational Databases
- Test-driven development mindset and a focus on quality, scalability and performance
- Strong programming fundamentals and ability to produce high quality code
- Solid understanding of Agile (SCRUM) Development Process required
Primary Responsibilities
- Design, architect and develop advanced software solutions in a cross functional Agile team supporting multiple projects and initiatives
- Collaborate with product owners and/or the business on requirements definition, development of functional specifications, and design
- Collaborate on or lead development of technical design and specifications as required
- Code, test and document new applications as well as changes to existing system functionality and ensure successful completion
- Take on leadership roles as needed
Skills & Requirements
- Bachelor’s Degree required, preferably in Computer Science or related field
- 3+ years of software development experience using GoLang/Java programming language
- Experience with cloud technologies (AWS/Azure/GCP/Pivotal Cloud Foundry/any private cloud) and containerization is required
- Experience with a micro-services architecture is a plus
- Excellent communication, collaboration, reporting, analytical and problem solving skills
- Experience with PostgreSQL or other Relational Databases
- Test-driven development mindset and a focus on quality, scalability and performance
- Strong programming fundamentals and ability to produce high quality code
- Solid understanding of Agile (SCRUM) Development Process required

• Architecture: Knowledge of data structures and an eye for architecture.
• Strong coding/debugging abilities: You have advanced knowledge of at least one
programming language, and are happy to learn more. Either Go or Java
• Distributed Systems: Experience building distributed systems at scale.
• Fast learner:
• A team player:
• Design and business acumen
Basic Qualifications
• 8 years of experience profeciency in Java or Go language and in handling large data systems
• Proficiency in Spark and related big data handling architectures• Proficiency in SQL
Job Description
Paytm is looking for hands-on technologists, who will be responsible for architecting & designing new age mobile & web 3.0 products at Paytm.
Key Responsibilities
Incumbent will be architecting our futuristic mobile & web 3.0 products and choose the best
technologies, components and subsystems on different server side tech.
Driving innovations in the product constantly to remain ahead of the curve.
Serve as a thought leader and mentor on technical, architectural, design and related issues.
Proactively identify architectural weaknesses and recommend appropriate solutions.
Balance short-term versus long-term actions, strategic versus tactical requirements, while
continuing to move forward towards the strategic vision.
Collaborate with cross functional teams to solve complex problems and building products
spanning across multiple teams to deliver end-to-end products & features.
Estimates efforts, identify risks, devises and meets project schedules.
Provide functional, design, and code reviews in related areas of expertise with-in team and
cross-team.
Mentor / coach engineers to facilitate their development and provide technical leadership to
them.
Skills required
MS or BS/B.Tech in computer science or equivalent experience from top college.
3+ years of strong software design/development experience in building massively large scale
distributed internet systems and products.
Hands-on experience in Advanced Java/ Node.JS/other backend JavaScript
frameworks, MySQL/NoSQL, golang, etc.
Excellent data structure & algorithm and problem solving skills.
Experience and knowledge of open source tools & frameworks, broader cutting edge
technologies around server side development.
Should be an active contributor to developer communities like Stackoverflow, Topcoder, Github,
Google Developer Groups (GDGs).
Superior organization, communication, interpersonal and leadership skills.
Must be a proven performer and team player that enjoy challenging assignments in a high-
energy, fast growing and start-up workplace.
Must be a self-starter who can work well with minimal guidance and in fluid environment.







