Fullstack Developer

Ascendion; Bengaluru; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Ascendion is seeking a Full Stack Developer to contribute across the end-to-end delivery lifecycle, spanning front-end (React.js/JavaScript) and back-end (Java/Spring, microservices). You will also support production incident analysis and remediation in a high-control financial environment.

You will design and build user-facing features using React.js, integrate UI with back-end services, and collaborate with globally distributed technology teams to ensure secure, high-quality delivery and

Qualifications

• Strong hands-on with Java/J2EE and microservices development.
• Proficient in React.js and modern JavaScript (ES6+).
• Experience with state management (Redux) and React hooks.
• Knowledge of RDBMS (Oracle/DB2) and enterprise integration patterns.
• Proficient with IDEs (IntelliJ/Eclipse), Maven, Git; strong unit testing (JUnit).
• Experience with Web Services / REST APIs and CI/CD practices.
• Familiar with security practices, code scanning tools, and banking policies.

Responsibilities

• Deliver new functionality across full stack from UI to service layers.
• Support production operations including root-cause analysis and remediation.
• Collaborate with stakeholders and global teams for high-quality delivery.
• Translate requirements into working software across front-end and back-end layers.
• Build reusable UI components and integrate with back-end services and messaging patterns.
• Maintain engineering hygiene including design updates and version control documentation.
• Prepare system test plans, support QA/UAT, and document implementation procedures.
• Provide post-implementation warranty support and performance optimization.

Skills

Java/J2EE

React.js

JavaScript (ES6+)

Redux

Spring Framework

Hibernate

MQ/JMS/Kafka

Maven

Git

JUnit

REST APIs

Unix/Shell scripting

CI/CD/DevOps

Tools

IntelliJ/Eclipse

Maven

Jenkins

Git

Kafka

Job description

The Full Stack Developer will contribute across the end-to-end delivery lifecycle, spanning front-end (React.js/JavaScript) and back-end (Java/Spring, microservices, integration), while also supporting production incident analysis and remediation. The role requires strong engineering discipline, ownership, and the ability to deliver change safely in a high-control financial environment.

Responsibilities:

• The role is responsible for delivering new functionality and enhancing existing capabilities across the full stack, from user-facing interfaces through to service and integration layers.
• The developer will also support production operations, including root-cause analysis, code remediation, performance tuning, and controlled release execution.
• This position requires consistent collaboration with business stakeholders, QA, and globally distributed technology teams, with a focus on high-quality delivery, test automation, secure coding, and compliance with bank policies (per role description).
• The developer will translate business requirements and functional specifications into working software, including understanding existing program logic and applying changes safely across both front-end and back-end layers.
• The role includes designing and building user-facing features using React.js and JavaScript, developing reusable components and front-end libraries, and integrating UI workflows with back-end services and messaging patterns.
• The position requires disciplined engineering hygiene, including estimates, design and program specification updates, and version control documentation, as well as awareness of code scan findings, cyber vulnerabilities, and dependency lifecycle management (per role description).
• The developer will build new programs and enhance existing functionality, coordinate code reviews with leads and SMEs, and execute thorough unit testing, including front-end component tests and back-end service tests.
• The role includes preparing and executing system test plans and scripts, providing technical support for QA and UAT, and producing implementation, back-out, and support handover documentation.
• The developer will support production implementations and provide post-implementation warranty support, including investigation and resolution of production issues and performance optimisation across the full technology stack (per role description).

Requirements:

• Candidates must demonstrate proven experience in Java/J2EE and microservices development, with strong hands-on capability in React.js and modern JavaScript (ES6+) for building component-based user interfaces.
• Experience should include state management patterns (e.g., Redux or equivalent), hooks, and building performant, reusable UI components.
• The role requires experience with at least one RDBMS such as Oracle or DB2, as well as enterprise integration and batch patterns, including Apache Camel and Spring Batch. Strong knowledge of the Spring Framework and Hibernate is required, along with messaging technologies such as MQ / JMS / Kafka to support reliable message transfer processes (per role description).
• Candidates should be proficient with common engineering toolchains including IntelliJ/Eclipse, Maven, and Git, and demonstrate disciplined unit testing practices using JUnit as well as front-end testing approaches (e.g., Jest and React Testing Library or equivalent).
• Experience with Web Services / REST APIs is required, including integrating React front ends with back-end services and handling API contracts responsibly.
• The role requires hands-on exposure to Unix / Shell scripting, performance tuning and response time optimisation, and familiarity with secure development practices including code scanning tools such as Black Duck and SonarQube (per role description).
• Candidates should also have an understanding of banking risk and compliance policies and prior experience building financial applications involving transaction processing, settlement, and accounting (per role description).
• Familiarity with modern front-end build and dependency tooling (e.g., npm/Yarn, Webpack or equivalent), and working knowledge of CI/CD and DevOps-aligned delivery practices are expected to support reliable delivery across environments.

Key Skills:

• This role requires strong full-stack development capability spanning React.js/JavaScript on the front end and Java/Spring on the back end, with the ability to debug issues across UI, API, integration, and data layers.
• Success in the position requires strong analysis and problem-solving skills, crisp written and verbal communication, and the ability to work independently with limited supervision while maintaining delivery discipline (per role description).
• The developer must demonstrate ownership of tasks and outcomes, operate effectively under pressure across multiple concurrent priorities, and work collaboratively in global team structures.
• A practical understanding of Waterfall and Agile delivery approaches is required, alongside an eagerness to learn and adapt to evolving technologies and platform expectations (per role description).
• Strong awareness of UI quality considerations, including usability and performance, is expected when implementing React-based interfaces.