Senior Back End Developer

Job Title : Backend Engineer (AI-First | FinTech/Crypto)

Experience : 3 to 6 Years

Location : Gurugram (Sector 49)

Working Hours : 10:00 AM – 6:00 PM

Work Mode : On-site | 6 Days Working

Employment Type : Full-time

Role Overview :

This is not a typical ticket-based engineering role. You will take end-to-end ownership of systems—designing architecture, building scalable solutions, and solving real-world performance challenges.

We operate in an AI-first engineering environment, leveraging advanced tools and automation workflows to build high-performance distributed systems.

Mandatory Skills :

Java/Spring Boot or Node.js, System Design (HLD/LLD), Distributed Systems, Event-Driven Architecture (Kafka/RabbitMQ), Low-Latency APIs, PostgreSQL/MongoDB, CI/CD, Docker/Kubernetes, AI-assisted development (Copilot/Cursor/Claude)

Key Responsibilities :

• Design and build scalable backend systems (Java/Spring Boot, Node.js, or similar).
• Architect and implement event-driven systems (Kafka, RabbitMQ, pub/sub).
• Develop secure and reliable financial systems with strong data integrity.
• Solve scalability and performance challenges in fintech/crypto environments.
• Own features end-to-end: design → development → deployment → monitoring.
• Work with real-time data pipelines (WebSockets, streaming, event sourcing).
• Define service contracts and optimize system architecture.

AI-First Engineering (Must-Have Mindset) :

You will :

• Use tools like GitHub Copilot, Cursor, and Claude in daily development
• Follow spec-driven development using structured instructions
• Review, validate, and ship AI-generated code with strong engineering judgment

Core Requirements :

• 3+ years of backend development experience.
• Strong expertise in Java (Spring Boot) or Node.js.
• Solid understanding of System Design (HLD/LLD, Distributed Systems).
• Experience with event-driven architectures (Kafka, RabbitMQ, async pipelines).
• Hands-on experience building low-latency, high-throughput systems.
• Strong database knowledge (PostgreSQL, MongoDB, etc.).
• Understanding of security, performance optimization, and reliability.
• Experience with CI/CD, Git, Docker, Kubernetes.
• Exposure to React / React Native is a plus.

Good to Have (Differentiators) :

• Experience in FinTech / Crypto / Web3 / Blockchain.
• Built systems for trading, payments, or real-time financial data.
• Experience with AI agents, automation pipelines, or agent-based systems.
• Exposure to parallel AI workflows (coding / testing / refactoring).
• Contributions to open source or technical blogs.
• Experience handling production-scale systems.

• Develop, test, and maintain server-side applications using Node.js and related technologies.
• Design and implement RESTful APIs and microservices architecture to support frontend functionality.
• Collaborate with cross-functional teams to understand business needs and translate them into technical solutions.
• Optimize application performance, ensuring scalability and reliability.
• Conduct code reviews, mentor junior developers, and ensure adherence to best practices.
• Stay updated with emerging backend technologies and methodologies to improve development processes.

Mandatory

• SaaS experience of 2 years with total development experience of 4 years
• Must have worked in a smaller company of less than 100
• Should have built solutions/softwares end to end and not just as a part of bigger team
• Should see themselves going deeper into the same role even 5 years down the line
• Should have knowledge on Node.js, MongoDB, and AWS
• Strong understanding of asynchronous programming, event-driven architecture, and Node.js design patterns.
• Proficiency in working with databases such as PostgreSQL, MongoDB, or MySQL.
• Experience with API development, including RESTful services and microservices.
• Familiarity with cloud platforms such as AWS, Azure, or Google Cloud.
• Strong problem-solving skills and the ability to debug complex server-side issues.

Essential

• Proficiency with version control systems like Git.
• Experience with CI/CD pipelines and deployment automation.
• Knowledge of system design and scalable architecture.
• Understanding of security best practices and implementing secure APIs.

Good to Have

• Experience with GraphQL and related backend technologies.
• Knowledge of containerization and orchestration tools like Docker and Kubernetes.
• Familiarity with message brokers like RabbitMQ or Kafka.
• Experience with platforms like Shopify, BigCommerce, or other e-commerce technologies.
• Exposure to frontend technologies such as React for better cross-functional collaboration.

Job Summary: We are looking for a skilled SQL Developer to join our team. The ideal candidate will have a strong understanding of database management systems, experience in writing complex SQL queries, and a solid understanding of data structures and algorithms. The SQL Developer will be responsible for designing, developing, and maintaining SQL databases, ensuring their performance, availability, and security.

Key Responsibilities:

• Design, develop, and optimize SQL databases, tables, views, stored procedures, and triggers.
• Develop efficient and complex SQL queries for data extraction, transformation, and loading (ETL).
• Create and maintain database schema designs, data models, and ER diagrams.
• Analyze and optimize complex SQL queries for better performance.
• Implement indexing strategies, query optimization techniques, and other performance tuning practices.
• Ensure data integrity and security by designing and implementing database constraints, data validation rules, and security policies.
• Work with software developers, data analysts, and system administrators to integrate SQL databases with other applications and systems.
• Collaborate with business stakeholders to understand data requirements and provide solutions.
• Document database designs, stored procedures, and other database-related activities.
• Maintain accurate records of database changes, optimizations, and configurations.

Eligibility Criteria:

• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• 3 to 5 years of experience as an SQL Developer or in a similar role.
• Proven experience in database design, development, and management.
• Experience with SQL Server, MySQL, PostgreSQL, or other relational database management systems.
• Proficiency in writing complex SQL queries, stored procedures, functions, and triggers.
• Strong understanding of indexing, query optimization, and performance tuning.
• Familiarity with database security best practices.
• Strong analytical and problem-solving skills.
• Excellent communication and collaboration abilities.
• Attention to detail and commitment to quality.
• Ability to work independently and in a team environment.
• Experience with cloud-based databases (e.g., AWS RDS, Azure SQL Database).
• Experience with NoSQL databases.

What We Offer:

·        Competitive salary and performance based incentives.

·        Comprehensive benefits package, including health

·        Opportunities for professional growth and career advancement.

·        A collaborative and innovative work environment.

• Should have knowledge in Core PHP and object-oriented programming.
• You will be responsible in developing applications using Laravel/ wordpress/ Codeignitor - preffered (Laravel)
• Responsible for Developing High-Quality Web Applications, Admin dashboards and PHP Scripts, APIs.
• Should be able to Develop, record and maintain cutting edge web-based php applications on portal plus permiium service platforms
• Need to Identify and fix bugs that are found within code.
• Strong knowledge to Interact with SQL databases.
• Must be Creative problem-solving skills with a focus on delivering business value quickly
• Knowledge of MySQL and ability to write/ Maintain complex queries.
• Understanding of object-oriented PHP programming, Jquery and Javascript
• Should have good communication skills

Responsibilities

• Produce clean, efficient code based on specifications
• Integrate software components and third-party programs
• Verify and deploy programs and systems
• Troubleshoot, debug and upgrade existing software
• Gather and evaluate user feedback
• Recommend and execute improvements
• Create technical documentation for reference and reporting

Requirements and skills

• 1-3 Years of Proven experience as a Backend Developer
• Tech Stack:

• AWS- Lambda, ECS, RDS Arora, RDS PostgreSQL, DynamoDB, S3, SQS, APIG, Cloud Front
• NodeJS
• Typescript(optional)

• Familiarity with Agile development methodologies
• Experience with software design and development in a test-driven environment
• Ability to learn new languages and technologies
• Excellent communication skills
• Resourcefulness and troubleshooting aptitude
• Attention to detail

You will be building efficient, scalable & high performance microservices and applications which will power the network of thousands of retailers across the country and at the same time improve the efficiency and visibility of information flow in our supply chain systems.

Your core responsibilities:

• Create elegant, efficient and maintainable software to support and extend our current products.
• Solve complex architectural challenges when implementing new features.
• Integrate with databases, file systems, cloud services when delivering scalable solutions.
• Troubleshoot and fix reported customer issues, delivering software patches as needed.
• Assisting in making design decisions based on performance, scalability, security, and future expansion.
• Communicating and collaborating with management, product, QA teams.

What will help you thrive in this role?

• Degree in Computer Science, similar technical field of study or equivalent practical experience.
• 5+ years of experience as a Backend Engineer.
• Proficiency in web development using any of the languages: PHP, Python, Java, NodeJS or Golang.
• Should possess a solid grasp of object-oriented programming, system architecture & design, databases, development, and testing methodologies.
• Good in Design (HLD and LLD).
• Good in Database schema design.
• Good to have experience with AWS or Google Cloud or Azure and serverless architecture.
• Excellent verbal communication skills.
• Track record of delivering successful products as an engineer.
• Experience with large applications of some scale will be a plus.
• Ability to deep dive, understand & improve the legacy code.
• Domain knowledge of supply chain & retail industry is a plus.

Whom you will be sharing your work day with? 

• We are in the forefront of disrupting traditional retail & supply chain industry by building distributed systems
• We are hardcore open source lovers and believe in the strength of open source community.
• We believe technology can change the way information is consumed.
• We use a data driven approach to build new products and features.
• Build new tech solutions to improve business processes and enable our various departments to help service our teams better.
• We embrace and enable DevOps culture within the organisation.

And yes! We do have new furry friends coming to our office everyday.

Work Perks

• Hybrid work environment with flexibility to work from anywhere. 
• A great salary, commensurate with experience.
• Unlimited vacation policy which means Paid Vacations.
• A relaxed & flexible working atmosphere.
• Weekly parties (Unofficial).
• Paid outings to remote work locations and industry events/conferences.
• Paid Health Insurance for you and your loved ones.

Role Description :

- Good Understanding of Java 8 with proven hands-on skills
- Experience in Spring Framework - Spring Boot, Spring Data, Spring REST
- Experience in Spring Reactive
- Experience in Git, Gradle / Maven
- Practitioner of clean code and SOLID principles
- Able to test drive features
- Can debug code at ease and ensure quality code is produced
- Knowledge of design patterns
- Comfortable with agile practices, user stories and task breakdown
- Understands REST principles and Micro services
- Experienced with technologies such as
- Required Java, Spring Boot
- Good to have Maven, GIT, Swagger, PCF, Rabbit MQ
- Good API skills technology such as Rest Webservice
- Good foundation in data structures, algorithms and OO Design with rock solid programming skills
- Experienced on creating unit test using JUnit, Mockito or PowerMock
- Experienced on mark up language such as JSON and YML
- Experienced on using Quality and Security scan tools such as Sonar, Fortify and WebInspect
- Experienced on agile methodology