Java Developer

About the Role

LeadSquared is looking for a Backend Heavy Engineer with strong expertise in Java backend development and hands-on experience working with chatbots / conversational systems.

The ideal candidate should have a strong foundation in backend engineering, distributed systems and API development, along with exposure to building or integrating chatbot, conversational AI or messaging-based solutions.

Key Responsibilities

• Design, develop and maintain scalable backend services and APIs using Java.
• Build high-performance, reliable and secure microservices-based applications.
• Develop and integrate chatbot / conversational platforms with backend systems.
• Work on chatbot workflows, conversation flows, APIs, integrations and business logic.
• Integrate backend services with LLM/AI-powered conversational systems, where required.
• Build RESTful APIs and integrations with internal and third-party platforms.
• Work with databases, caching, queues and distributed systems to support scalable applications.
• Troubleshoot performance, reliability and production issues.
• Collaborate with Product, AI/ML, Frontend and Engineering teams to deliver end-to-end solutions.
• Participate in architecture discussions, code reviews and technical design.
• Write clean, maintainable and well-tested production-grade code.

Must-Have Skills

• 4–6 years of strong backend development experience.
• Strong hands-on experience with Java, Spring Boot and REST APIs.
• Good understanding of Microservices architecture.
• Experience with SQL databases such as MySQL/PostgreSQL.
• Good understanding of data structures, algorithms and object-oriented programming.
• Hands-on experience with chatbots, conversational applications, chatbot frameworks or messaging platforms.
• Experience integrating chatbot systems with backend APIs/services.
• Understanding of asynchronous processing, queues and event-driven architecture.
• Good understanding of Git, CI/CD and production deployment practices.

Good to Have

• Experience with Generative AI / LLM-based chatbots.
• Exposure to RAG, embeddings, prompt engineering or LLM APIs.
• Experience with Kafka, Redis, Elasticsearch or similar technologies.
• Cloud experience with AWS/Azure/GCP.
• Experience with Docker/Kubernetes.
• Experience building customer-facing SaaS products.
• Exposure to CRM, MarTech, SalesTech or enterprise platforms.

Ideal Candidate

We are looking for someone who is backend-first and Java-heavy, but has also worked on chatbot/conversational use cases. The candidate should be comfortable owning backend services end-to-end and collaborating with AI/ML teams to build scalable conversational experiences.

Ideal profile:

Java + Spring Boot + Microservices + Strong Backend Engineering + Chatbot/Conversational AI Experience.

Job Role Solution Architect

Experience 15+ years

Notice period Immediate

Location - Bangalore

Note: OMS & Retail domain Experience is mandatory

Introduction

We are looking for an experienced Solution Architect with strong hands-on expertise in Java and Microservices architecture.

Responsibilities include:

- Design and define end-to-end solution architecture for enterprise applications using Java and Microservices.

- Lead architecture discussions, technical design reviews, and solution blueprints.

- Drive microservices-based application design, including service decomposition, API contracts, and integration patterns.

- Define and govern RESTful API standards and service-to-service communication.

- Work closely with product owners, business stakeholders, and development teams to translate business requirements into technical solutions.

- Provide technical leadership and mentorship to development teams.

- Ensure solutions meet non-functional requirements such as scalability, performance, availability, and security.

- Review code, architecture artifacts, and ensure adherence to best practices.

- Support DevOps, CI/CD strategy, and cloud-native adoption.

- Identify technical risks and propose mitigation strategies.

Primary Skills :

- 10+ years of proven experience in the industry, with at least 3 years as an Architect or similar role designing and developing enterprise-scale applications.

- Bachelors in engineering / technology (4 year) or master's in computer applications (2 year)

- Must possess at least 6+ years of Software development experience.

- Expert knowledge in at least one object-oriented programming language like Java, one backend framework like Spring Boot / Node JS, one UI framework like React JS / Angular JS and RDBMS or NoSQL database.

- Excellent knowledge of front-end programming languages, such as HTML, CSS, JavaScript, and AngularJS, with the ability to render server-side and client-side content.

- Helps identify newer practices and adoption of existing ones. Ensure that the code quality is maintained via own and/or peer code reviews.

- Can lead the team in delivery of backend and user interface code. Ensure that the DevOps tasks are

executed well.

- Ensure that the software has the correct level of logging & monitoring in Production and LLEs.

- Exceptional problem-solving skills.

- Excellent written and verbal communication. Must understand the client’s business requirements and translate them into software requirements. Has a view of the deliverable timeline and escalates when needed.

- Ability to articulate technical designs & develop documentation, flowcharts, layouts, diagrams, charts etc.

- Experience in implementing OMS products for retail customers will be an added advantage.

- Ability to do estimation for the given requirements.

- Ability to lead technical discussions with clients.

- Must be able to do quick proofs of concepts and demos based on client requirements.

- Provide timely feedback on the performance of team members.

- Conduct interviews & provide feedback to achieve hiring objectives.

- Contributes to organization building functions such as hiring, training, mentoring, team building.

Secondary Skills :

- Experience with Docker and Kubernetes for containerized deployments.

- Exposure to Cloud platforms such as AWS, Azure, or GCP.

- Knowledge of CI/CD pipelines (Jenkins, GitHub Actions, GitLab CI, etc.).

- Experience with Kafka / RabbitMQ or other messaging systems.

- Good understanding of SQL and NoSQL databases.

Basic knowledge of:

- Application security (OAuth2, JWT, TLS)

- Logging & monitoring (ELK, Prometheus, Grafana, CloudWatch, etc.)

Position: Backend Engineer

Location: Ascendion office - Kadubeesanahalli, Bengaluru

Work mode: Hybrid (3 days/week)

Experience Range: 6 - 9 years

Key Responsibilities:

Design, develop, and maintain backend applications using Java and Spring Boot

Build high-performance RESTful APIs and microservices

Work with NoSQL databases for scalable data handling

Contribute to cloud-based development and deployments on AWS/Azure

Implement and manage CI/CD pipelines for automated delivery

Collaborate closely with DevOps, QA, and Product teams

Participate in code reviews, debugging, and performance optimization

Ensure clean, maintainable, and well-documented code

Support production and ensure application stability

Required Skills & Qualifications:

Strong hands-on experience in Core Java

Solid experience with Spring Boot and microservices architecture

Working knowledge of NoSQL databases (MongoDB, Cassandra, DynamoDB, etc.)

Basic exposure to Golang (ability to read/write simple services)

Experience with cloud platforms such as AWS and/or Azure

Familiarity with CI/CD tools (Jenkins, GitHub Actions, GitLab CI, Azure DevOps)

Good understanding of REST APIs, JSON, and HTTP protocols

Proficiency with version control systems like Git

We are looking for a focussed, energetic and motivated Senior Java Developer. You must have sufficient experience in Java Development, Spring, Spring Boot, AWS and SQS, S3. You will be challenged with complex and robust product development.

As a Senior Java Developer, you will be the most senior developer within the company working alongside other Java Developers, the Engineering Manager, and the CTO.

Senior Java Developer requirements

Solid development experience using Java, Springboot, SQS, S3 and Microservices

Experience working in Swing Java framework

Revises, updates, refactors, and debugs code

Write clear, concise and efficient code and ensure it is fully tested

Service and develop features using Java with AWS, JUnit, SQL and Spring framework

You have a good knowledge of Cloud technologies (ideally AWS)

Participate in peer coding reviews and work in a collaborative, agile environment

Demonstrate technical knowledge and expertise with a clear understanding on the products' technical composition

Senior Java Developer responsibilities

7-9 yrs minimum work experience

Excellent analytical, troubleshooting, and communication skills

Excellent attention to detail and time-management skills

Serves as an expert on developed applications

Ability to adapt and learn new product/technology is key

Collaborates with internal teams to produce software design and architecture

Knowledge of Agile frameworks (i.e. Scrum) and has worked with Jira or Spira

Attend daily stand-up meetings alongside the Scrum Master

A self-starter, hardworking and committed individual

Work UK hours - ideally 9.00am - 6pm with the expectation to work out of ours when needed

Job Description :

- We are a Fintech Company based in Pune, a B2B Trade Digitization platform for SMEs and Corporates to collaborate and work with Financial Institutions to raise short term fundings for payables and receivables financing.

- We are thus well placed to help Corporates and their Supply Chains to meet their GST needs.

Technologies :

- The platform is built using a polygot technology stack 

- Platform Backend : JVM 

- Web Layer : ReactJS and related ecosystem, HTML, Javascript, CSS, Bootstrap 

- API & Business Layer : Kotlin and functional programming 

- Client Apps and Customer Integrations: Kotlin, Jersey ReST Framework, home grown optimized HTTP and SQL libraries 

- Mobile Apps: Android, iOS 

- Database : MySQL - JVM - Hibernate & Exposed as ORM library - Python - SQLAlchemy as ORM library 

- Build Tools : Gradle, Shell Scripting, AWS Code Build, Jenkins

- Ops Automation : Ansible, Terraform 

- Servers : Ubuntu Linux 

- Version Control : GIT 

- Test Automation : Python - unittest, pyhamcrest, freshen, nose. JVM - Junit, Kotlin Test 

- Cloud Providers : Amazon AWS, Linode

Requirements :

- We are a self organized engineering team with a passion for programming and solving business problems for our customers.

- We are looking to add 2 members in our team having hands on technical experience of 2-6 years.

- We encourage our team to continuously learn new technologies and apply the learnings in the day to day work even if the new technologies are not adpopted.

- We strive to continuously improve our DevOps practices and expertise to form a solid backbone for the product, customer relationships and sales teams which enables them to add new customers every week to our financing network.

As an engineering team member, you will :

- Work collaboratively with product, customer support and DevOps team to build, enhance, maintain, deploy and operate our systems. 

- Continuously automate operational processes to improve efficiencies and productivity and enhance customer experience 

- Work closely with the architect to continuously refactor the system architecture and design to meet the changing landscape triggered by technology changes and business growth 

- Work with the DevOps team to build and maintain tools for deployment, monitoring and operations. 

- Ensure that development processes and deliverables always adhere to the mandates laid down for various certifications (PCI and ISO 27001 in particular)

Skills required :

- Pre-requisites : Competent in Java, database, HTML, Javascript, CSS 

- Should be passionate about technology and ready to deep dive into programming 

- Should have sound expertise of writing testable code and appreciate defect free coding 

- Should be willing to handle Ops automation and production support 

- Should be able to reason/argue/discuss/suggest solutions and alternatives

- Should be able to decipher the core problem to be solved during discussions with product team and/or customers 

- Should have good communication skills and experience working in teams

- Knowledge of Python will be an added advantage

- Experience of working in financial domain will help but not a necessity

• Have at least 3 years work experience in Java 8 or higher / J2EE Java development.

• Have experience of agile systems development methodologies such as SCRUM
• Experience in designing the solution and implementation.
• Is a communicative, positive, outgoing and driven team player.
• Solution-oriented, see opportunities and proactively proposing new solutions, speak and write fluently in English.
• Good to have certifications in Java, Spring etc.
• Experience in Java 8.

• Experience in Spring Boot and other spring framework like Spring data, AOP etc.
• Experience in MongoDB/ Kafka / RabbitMQ etc.
• Experience in REST API
• Have worked on microservices
• Should have worked on minimum 2- 3 projects
• Experience in writing effective Unit test case for better coverage.
• Experience in writing good quality code by following code quality tools likes SonarQube etc.