Core Java Developer

About the role:

We're looking for a Staff Software Engineer who will work across teams to design and implement robust solutions, mentor other engineers, and drive technical excellence. If you care about building and running reliable software systems in production, you'll like working at One2N.

You'll primarily work with our enterprise customers on One-to-N kind problems, where you:

• Design, build and scale reliable software systems that handle real-world production demands
• Solve technical challenges around performance bottlenecks and system scaling
• Build and scale platforms for high throughput and low latency

Key responsibilities:

• Lead end-to-end architecture and design for large-scale systems and technical initiatives
• Create and maintain technical documentation through Architecture Design Records (ADR) and Request For Comments (RFC)
• Participate in architecture reviews and help teams make better technical decisions
• Drive improvements in system reliability, performance, and scalability
• Tackle complex technical challenges, especially around bottlenecks and scaling
• Mentor engineers through 1:1s, code reviews, and technical guidance
• Design high-throughput, low-latency systems that can scale
• Contribute to shared libraries, internal SDKs, and developer tooling to improve engineering efficiency

About you:

• 9+ years of professional programming experience with JVM languages (Java/Scala/Kotlin)
• Lead by example with high-quality, maintainable, and testable code and good architecture decisions
• Strong experience with:
• REST API design and implementation
• Spring Boot framework
• Database schema modeling
• Test-Driven Development (TDD)
• Domain Driven Design
• Experience in building microservices architectures
• Strong testing skills with Unit and Integration testing. Good to have experience with Contract-driven tests.
• Ability to build reusable libraries/SDKs
• Brainstorm with product and business teams to prioritize the backlog
• Experience with Kafka for event-driven architectures to build auto-scaling data processing pipelines
• Exposure to AWS architecture, particularly with EKS and S3
• Understanding architecture implications for cost, security, and performance

Leadership & collaboration:

• Track record of mentoring and coaching engineers
• Strong written and verbal communication skills
• Ability to influence without authority

About the company:

At Xenspire Technologies Pvt. Ltd., we are building People-First AI products—AI that augments human decision-making, reduces cognitive load, and earns trust through transparency, control, and reliability.

As a Lead Engineer in the Founding Engineering Team, youʼll help set the technical direction and build the core systems that everything else will run on—product architecture, engineering standards, and AI-first capabilities embedded into real workflows. This is a challenging environment: short feedback loops, meaningful ownership, and problems that donʼt come with a playbook.

If you like shipping fast, thinking deeply, and building systems that scale from day one, youʼll fit right in.

What Youʼll Do:

• Build and own core systems (web + backend + data) from scratch—designed to scale.
• Develop People-First AI capabilities: copilots, semantic search, automated workflows, and decision support—designed with guardrails, explainability, and human-in-the-loop controls.
• Drive architecture decisions: APIs, database design, eventing, caching, security basics, observability, and performance.
• Convert ambiguous business needs into clean product experiences with strong engineering discipline.
• Establish engineering standards: code quality, reviews, CI/CD, testing strategy, release readiness.
• Mentor engineers through example—this is a hands-on role, not a coordination role.
• Partner closely with founders/product/design; make trade-offs and ship outcomes, not just output.

What Weʼre Looking For:

• 2-4 years building production-grade software, ideally in product companies or high-growth startups.
• Strong expertise in Backend: Python/Java, APIs, scalability patterns Databases: PostgreSQL/MySQL + one NoSQL/search system (Elastic/OpenSearch/Vector DB is a plus)
• Proven experience building platforms/products from zero 1, then stabilizing for scale.
• Practical AI experience (not just demos): LLM integrations, prompt/tooling patterns, evaluation, safety/guardrails RAG/semantic search, embeddings, vector stores, reranking, data pipelines
• High ownership mindset; comfortable with ambiguity, tight timelines, and strong accountability.
• Strong communication—clear docs, crisp decisions, visible trade-offs.
• Experience working on SAAS Products or SAAS platforms

Nice to Have:

• Multi-tenant SaaS experience, RBAC, audit logs, and security-first design patterns.
• Cloud familiarity: AWS/GCP/Azure, containers, basic infra-as-code, observability tooling.
• Experience shipping AI features with measurable quality (latency, accuracy, cost, adoption)

Job Description: We are seeking a talented Java Full Stack Developer to join our team.

We are solving complex technical problems in the financial industry and need talented software engineers to join our mission and be a part of a global software development team. As a Java Full Stack Developer, you will be responsible for designing, developing, and maintaining enterprise applications using Java and Angular.

You will collaborate with cross-functional teams to define, design, and ship new features, and you will work closely with Architects to ensure the technical feasibility of designs and implement them accordingly.

Required Skills: 

• Exp. - 5 to 9 years. 
• Experience in Core Java 8 and above, Spring (including Core, WebMvc, Batch, Cloud etc). 
• Extensive experience in developing enterprise-scale n-tier applications for financial domain. Should possess good architectural knowledge and be aware of enterprise application design patterns. 
• Should be able to analyze, design, develop and test complex, low-latency client-facing applications. 
• Develop user interfaces for modern web applications using Angular. 
• Experience with HTML5, CSS3, and JavaScript. 
• Good development experience with RDBMS, preferably DB2/Sybase databases. 
• Good knowledge of multi-threading and high-volume server-side development. 
• Basic working knowledge of Unix/Linux. 
• Excellent problem solving and coding skills in Java. 
• Strong interpersonal, communication and analytical skills. 
• Should be able to express their design ideas and thoughts. 

Good to have Skills: 

• Prior experience in investment banking / capital markets. 
• Experience with cloud platforms such as AWS, Azure, or Google Cloud Platform. 
• Knowledge of DevOps practices and CI/CD pipelines. 
• Familiarity with Agile methodologies. 
• Contributions to open-source projects. 
• Relevant certifications (e.g., Angular, Java). 

We have openings for Fullstack / Backend / Frontend Developers who can write reliable, scalable, testable and maintainable code.

At Everest, we innovate at the intersection of design and engineering to produce outstanding products. The work we do is meaningful and challenging - which makes it interesting. Imagine each line of your code, making the world a better place. We work on five workdays weeks, and overtime is a rarity. If clean architecture, TDD, DDD, DevOps, Microservices, Micro-frontends, scalable systems resonate with you, please apply.

To see the quality of our code, you can checkout some of our open source projects: https://github.com/everest-engineering

If you want to know more about our culture:

https://github.com/everest-engineering/manifesto

Some videos that can help:

https://www.youtube.com/watch?v=A7y9RpqXAdA;

https://youtu.be/PPjyP1WPOn8" target="_blank">https://youtu.be/PPjyP1WPOn8

• Passion to own and create amazing product.
• Should be able to clearly understand the customer's problem.
• Should be a collaborative problem solver.
• Should be able a team player.
• Should be open to learn from others and teach others.
• Should be a good problem solver.
• Should be able to take feedback and improve continuously.
• Should commit to inclusion, equity & diversity.
• Should maintain integrity at work

• Familiarity with Agile methodologies and clean code.

• Design and/or contribute to client-side and server-side architecture.

• Well versed with fundamentals of REST.

• Build the front-end of applications through appealing visual design.

• Knowledge of one or more front-end languages and libraries (e.g. HTML / CSS, JavaScript, XML, jQuery, Typescript) JavaScript frameworks (e.g. Angular, React, Redux, Vue.js)

• Knowledge of one or more back-end languages (e.g. C#, Java, Python, Go, Node.js and frameworks like SpringBoot, .NET Core) 

• Well versed with fundamentals of database design.

• Familiarity with databases - RDBMS like MySQL, Postgres & NoSQL like MongoDB, DynamoDB.

• Well versed with one or more cloud platforms like - AWS, Azure, GCP.

• Familiar with Infrastructure as Code - CloudFormation & Terraform & deployment tools like Docker, Kubernetes.

• Familiarity with CI/CD tools like Jenkins, CircleCI, Github Actions..

• Unit testing tools like Junit, Mockito, Chai, Mocha, Jest

We are seeking a highly skilled and experienced Full Stack Developer to join our dynamic team. As a Full Stack Developer, you will be responsible for designing, developing, and implementing software solutions across the entire application stack. You will collaborate with cross-functional teams, including product managers, designers, and other developers, to deliver high-quality, scalable, and maintainable software products.

Responsibilities :

1) Design and develop robust, scalable, and efficient software applications, APIs, and web services using modern technologies.

2) Collaborate with product managers, designers, and other developers to understand project requirements, user stories, and technical specifications.

3) Write clean, maintainable, and well-documented code following best practices and coding standards.

4) Perform thorough testing and debugging to ensure software quality and reliability.

5) Optimize application performance and implement security measures.

6) Stay up-to-date with industry trends and emerging technologies, and continuously improve technical skills.

7) Participate in code reviews to provide and receive constructive feedback.

8) Collaborate with team members to identify and resolve technical issues and bugs.

9) Work in an agile development environment, actively participating in sprint planning, stand-ups, and retrospectives.

10) Contribute to the continuous improvement of development processes and tools.

Requirements :

1) Bachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent work experience).

2) Proven experience as a Full Stack Developer or similar role, with a strong portfolio of completed projects.

3) Proficiency in front-end technologies such as HTML, CSS, JavaScript, and modern frameworks like React, Angular, or Vue.js.

4) Strong knowledge of back-end technologies such as Node.js, Python, Ruby, or Java.

5) Experience with databases and ORM frameworks (e.g., MySQL, PostgreSQL, MongoDB, SQLAlchemy, Hibernate).

6) Familiarity with cloud platforms (e.g., AWS, Azure, Google Cloud) and serverless architecture.

7) Knowledge of version control systems (e.g., Git) and collaboration tools (e.g., Jira, Trello).

8) Solid understanding of software development principles, design patterns, and best practices.

9) Excellent problem-solving skills and the ability to analyze and resolve complex technical issues.

10) Strong communication skills and the ability to work effectively in a team environment.

Preferred Qualifications :

1) Experience with containerization technologies (e.g., Docker, Kubernetes).

2) Familiarity with DevOps practices and CI/CD pipelines.

3) Experience with Agile/Scrum methodologies.

We are looking for a strong Java Developer with experience in fintech domain enterprise-grade world class data aggregation, reconciliation, and reporting product. This is an opportunity to discover a large range of business cases as well as design, develop and implement solutions that results solving complex problems. As a Java Sr developer you will design and develop technology-based business solutions that caters to current and future Product requirements.

Must have:
• 4-8 years of relevant experience in designing & developing and architecting systems/software for large business environments (Java, J2EE).
• Strong design and coding skills in Enterprise Java, Hibernate, Spring, Spring Boot, REST web services, JMS (ActiveMQ), XML, JSON.
• Must have good experience in Unix/Oracle/SQL.
• Experience in any communication framework (MQ) is an added advantage.
• Experience in Agile Development, Scrum, and Iterative approaches
• Participate in requirement gathering JAD sessions and support documentation
• Work with Product Management to resolve or raise queries and get query resolution on areas which are unclear, ambiguous and which need more information
• Develop high quality code as per standards, tiered coding, business layer coding, interface development and service development as needed
• Ability to solve complex software system issues.

Experience in One of below will be added advantage-
• Activiti BPM
• DROOLS Rules Engine
• Integrations with authentication protocols and Frameworks oAuth/ SAML/ LDAP/ Kerberos
• Experience with multiple integration technologies / frameworks.

EZOPS offers clients an integrated data management platform to resolve data quality, automation, and reporting challenges across the data lifecycle. The platform empowers users to transform data, setup and configure reconciliation rules, gain insights into root cause of breaks using machine learning algorithms, seamlessly setup rules via a UI for automated break remediation using BOTS and to create reports and dashboards with low I.T involvement. EZOPS has 5 global offices (San Francisco, NYC, NJ, Dublin, and Noida) and its clients include some of the largest global financial institutions.

Details:

• Should have Experience of Java/J2EE Developer
• Must have Full Stack Development experience.
• Must have  SQL Knowledge and a good understanding of Procedures.
• Need 4 or 6 Years of Experience Candidates. 
• Should be from a Product Based Company or should have 1 Year of Prior Experience in Product Based Companies.