Oracle Functional

Job Title : Senior Java Developer (Telecom Domain)

Experience : 6 to 10 Years

Location : Nagpur, Maharashtra

Job Summary :

We are looking for a Senior Java Developer with strong experience in the Telecom domain to design and develop enterprise messaging applications.

The ideal candidate should have hands-on expertise in Java, Kannel SMS Gateway, SMPP protocol, and telecom messaging platforms, along with experience building scalable REST APIs and microservices.

Mandatory Skills :

Java 8/11/17, Spring Boot, Spring Framework, Hibernate/JPA, REST APIs, Microservices, Kannel SMS Gateway, SMPP Protocol, Telecom Messaging Platforms, SMSC Integration, SQL, Linux, Git, CI/CD, Telecom Domain Experience.

Key Responsibilities :

• Design, develop, and maintain Java-based enterprise applications.
• Develop and integrate SMS solutions using Kannel SMS Gateway and SMPP.
• Build REST APIs and Microservices using Spring Boot.
• Integrate with SMSCs and telecom messaging platforms.
• Optimize application performance, reliability, and scalability.
• Troubleshoot production issues and collaborate with cross-functional teams.
• Perform code reviews and mentor junior developers.

Required Skills :

• 6 to 10 years of Java development experience.
• Strong expertise in Java 8/11/17, Spring Boot, Spring MVC, Hibernate/JPA.
• Hands-on experience with Kannel SMS Gateway and SMPP protocol.
• Experience with Telecom SMSCs and messaging platforms.
• REST APIs, Microservices, SQL (MySQL/PostgreSQL/Oracle).
• Linux/Unix, Git, CI/CD pipelines.
• Strong debugging and problem-solving skills.

Preferred Skills :

• Kafka, RabbitMQ, or ActiveMQ.
• Docker & Kubernetes.
• AWS, Azure, or GCP.
• Redis and monitoring tools (Grafana, Prometheus, ELK).
• Experience with Agile/Scrum.

Mandatory Requirement :

Candidates must have prior Telecom industry experience with hands-on working knowledge of SMPP, SMSC, and Kannel SMS Gateway. Profiles without Telecom messaging experience will not be considered.

Shift timings : Afternoon

Job Summary

We are seeking an experienced Senior Java Developer with strong expertise in legacy system migration, server management, and deployment. The candidate will be responsible for maintaining, enhancing, and migrating an existing Java/JSF (PrimeFaces), EJB, REST API, and SQL Server-based application to a modern Spring Boot architecture. The role involves ensuring smooth production deployments, troubleshooting server issues, and optimizing the existing infrastructure.

Key Responsibilities

● Maintain & Enhance the existing Java, JSF (PrimeFaces), EJB, REST API, andSQL Server application.

● Migrate the legacy system to Spring Boot while ensuring minimal downtime.

● Manage deployments using Ansible, GlassFish/Payara, and deployer.sh scripts.

● Optimize and troubleshoot server performance (Apache, Payara, GlassFish).

● Handle XML file generation, email integrations, and REST API maintenance.

● Database management (SQL Server) including query optimization and schema updates.

● Collaborate with teams to ensure smooth transitions during migration.

● Automate CI/CD pipelines using Maven, Ansible, and shell scripts.

● Document migration steps, deployment processes, and system architecture.

Required Skills & Qualifications

● 8+ years of hands-on experience with Java, JSF (PrimeFaces), EJB, and REST APIs.

● Strong expertise in Spring Boot (migration experience from legacy Java is a must).

● Experience with Payara/GlassFish server management and deployment.

● Proficient in Apache, Ansible, and shell scripting (deployer.sh).

● Solid knowledge of SQL Server (queries, stored procedures, optimization).

● Familiarity with XML processing, email integrations, and Maven builds.

● Experience in production deployments, server troubleshooting, and performance tuning.

● Ability to work independently and lead migration efforts.

Preferred Skills

● Knowledge of microservices architecture (helpful for modernization).

● Familiarity with cloud platforms (AWS/Azure) is a plus.

JOB DETAILS:

* Job Title: Lead I - Software Engineering-Kotlin, Java, Spring Boot, Aws

* Industry: Global digital transformation solutions provide

* Salary: Best in Industry

* Experience: 5 -7 years

* Location: Trivandrum, Thiruvananthapuram

Role Proficiency:

Act creatively to develop applications and select appropriate technical options optimizing application development maintenance and performance by employing design patterns and reusing proven solutions account for others' developmental activities

Skill Examples:

1. Explain and communicate the design / development to the customer
2. Perform and evaluate test results against product specifications
3. Break down complex problems into logical components
4. Develop user interfaces business software components
5. Use data models
6. Estimate time and effort required for developing / debugging features / components
7. Perform and evaluate test in the customer or target environment
8. Make quick decisions on technical/project related challenges
9. Manage a Team mentor and handle people related issues in team
10.  Maintain high motivation levels and positive dynamics in the team.
11.  Interface with other teams’ designers and other parallel practices
12.  Set goals for self and team. Provide feedback to team members
13.  Create and articulate impactful technical presentations
14.  Follow high level of business etiquette in emails and other business communication
15.  Drive conference calls with customers addressing customer questions
16.   Proactively ask for and offer help
17.  Ability to work under pressure determine dependencies risks facilitate planning; handling multiple tasks.
18.  Build confidence with customers by meeting the deliverables on time with quality.
19.  Estimate time and effort resources required for developing / debugging features / components
20.  Make on appropriate utilization of Software / Hardware’s.
21.  Strong analytical and problem-solving abilities

Knowledge Examples:

•     Appropriate software programs / modules

1. Functional and technical designing
2. Programming languages – proficient in multiple skill clusters
3. DBMS
4. Operating Systems and software platforms
5. Software Development Life Cycle
6. Agile – Scrum or Kanban Methods
7. Integrated development environment (IDE)
8. Rapid application development (RAD)
9. Modelling technology and languages
10. Interface definition languages (IDL)
11. Knowledge of customer domain and deep understanding of sub domain where problem is solved

Additional Comments:

We are seeking an experienced Senior Backend Engineer with strong expertise in Kotlin and Java to join our dynamic engineering team.

The ideal candidate will have a deep understanding of backend frameworks, cloud technologies, and scalable microservices architectures, with a passion for clean code, resilience, and system observability.

You will play a critical role in designing, developing, and maintaining core backend services that power our high-availability e-commerce and promotion platforms.

Key Responsibilities

Design, develop, and maintain backend services using Kotlin (JVM, Coroutines, Serialization) and Java.

Build robust microservices with Spring Boot and related Spring ecosystem components (Spring Cloud, Spring Security, Spring Kafka, Spring Data).

Implement efficient serialization/deserialization using Jackson and Kotlin Serialization. Develop, maintain, and execute automated tests using JUnit 5, Mockk, and ArchUnit to ensure code quality.

Work with Kafka Streams (Avro), Oracle SQL (JDBC, JPA), DynamoDB, and Redis for data storage and caching needs. Deploy and manage services in AWS environment leveraging DynamoDB, Lambdas, and IAM.

Implement CI/CD pipelines with GitLab CI to automate build, test, and deployment processes.

Containerize applications using Docker and integrate monitoring using Datadog for tracing, metrics, and dashboards.

Define and maintain infrastructure as code using Terraform for services including GitLab, Datadog, Kafka, and Optimizely.

Develop and maintain RESTful APIs with OpenAPI (Swagger) and JSON API standards.

Apply resilience patterns using Resilience4j to build fault-tolerant systems.

Adhere to architectural and design principles such as Domain-Driven Design (DDD), Object-Oriented Programming (OOP), and Contract Testing (Pact).

Collaborate with cross-functional teams in an Agile Scrum environment to deliver high-quality features.

Utilize feature flagging tools like Optimizely to enable controlled rollouts.

Mandatory Skills & Technologies Languages:

Kotlin (JVM, Coroutines, Serialization),

Java Frameworks: Spring Boot (Spring Cloud, Spring Security, Spring Kafka, Spring Data)

Serialization: Jackson, Kotlin Serialization

Testing: JUnit 5, Mockk, ArchUnit

Data: Kafka (Avro) Streams Oracle SQL (JDBC, JPA) DynamoDB (NoSQL) Redis (Caching)

Cloud: AWS (DynamoDB, Lambda, IAM)

CI/CD: GitLab CI Containers: Docker

Monitoring & Observability: Datadog (Tracing, Metrics, Dashboards, Monitors)

Infrastructure as Code: Terraform (GitLab, Datadog, Kafka, Optimizely)

API: OpenAPI (Swagger), REST API, JSON API

Resilience: Resilience4j

Architecture & Practices: Domain-Driven Design (DDD) Object-Oriented Programming (OOP) Contract Testing (Pact) Feature Flags (Optimizely)

Platforms: E-Commerce Platform (CommerceTools), Promotion Engine (Talon.One)

Methodologies: Scrum, Agile

Skills: Kotlin, Java, Spring Boot, Aws

Must-Haves

Kotlin (JVM, Coroutines, Serialization), Java, Spring Boot (Spring Cloud, Spring Security, Spring Kafka, Spring Data), AWS (DynamoDB, Lambda, IAM), Microservices Architecture

******

Notice period - 0 to 15 days only

Job stability is mandatory

Location: Trivandrum

Virtual Weekend Interview on 7th Feb 2026 - Saturday

• Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent experience)
• Proven 2 to 12 years of professional experience in Node.js development
• Strong proficiency in JavaScript, including ES6+ syntax
• Expertise in designing and developing RESTful APIs and microservices architecture
• Experience with popular Node.js frameworks such as Express.js, Nest.js, or Hapi.js
• Experience in modern front-end technologies (e.g., HTML, CSS, JavaScript frameworks like React, Angular, or Vue.js)
• Solid understanding of asynchronous programming, event-driven architecture, and design patterns
• Extensive knowledge of database systems, both SQL and NoSQL (e.g., MongoDB, PostgreSQL, MySQL)
• Experience with cloud platforms such as AWS, Azure, or Google Cloud Platform
• Familiarity with containerization technologies (e.g., Docker, Kubernetes)

Context for the Candidates:

Blockchain engineers are tasked with building secure, scalable, and high-performance decentralized applications. This discussion focuses on how to utilize key technologies—Node.js, Rust, Go, TypeScript, Ethers.js, viem, and Hardhat—in smart contract and blockchain system development, while addressing the practical challenges that arise in such projects.

Key Discussion Points:

• How do you integrate Node.js, Rust, Go, and TypeScript in blockchain-backed applications?

• Discuss the trade-offs between using Rust or Go for performance-critical blockchain services.

• What are the key challenges in ensuring the security and scalability of smart contracts using tools like Ethers.js, viem, and Hardhat?

• How do you approach testing, debugging, and deploying smart contracts in a decentralized environment?

• Share best practices for gas optimization, contract upgradability, and backend scalability.

Evaluation Criteria:

1. Technical Knowledge:

• Strong knowledge of Node.js, Rust, Go, and TypeScript with practical experience in blockchain development.

• Proficiency in Ethers.js, viem, Hardhat, and smart contract lifecycle (development, testing, deployment).

• Understanding of security best practices, performance optimizations, and scalability in decentralized systems.

2. Problem-Solving and Integration Skills:

• How candidates approach integrating smart contract solutions with backend services using Node.js, Rust, Go, and TypeScript.

• Solutions proposed for common challenges in blockchain projects such as gas fees, security vulnerabilities, and system bottlenecks.

3. Experience and Expertise:

• Minimum of 2 years of IT experience, including hands-on development with the specified technologies.

• Practical knowledge of blockchain architecture, consensus mechanisms, and decentralized application deployment.

4. Innovation and Critical Thinking:

• Candidates’ ability to think creatively about system architecture, proposing scalable and secure solutions for blockchain-based applications.

• Discussion on the future potential of blockchain technology and how the tech stack can evolve.

5. Communication and Team Collaboration:

• Clear articulation of technical challenges and how to address them in a team setting.

• Ability to lead or contribute to discussions in a way that encourages collaboration and team-driven problem-solving.

We are on a mission to enable businesses to build agile and accountable technology teams that can deliver results in a secure and scalable way. You will be working in one such technology team for our clients across the world.

• Collaborate with front-end and back-end developers and designers to build website following client requirements

• Create clear, simple, and reusable code

• Develop all server-side logic, including data storage to optimize website performance

• Identify programming bottlenecks and bugs and find fixes

• Test, update and validate web applications to be used on different web browsers

• Execute automated testing platforms and system tests

• BSc/BE/BTech in Computer Science, Engineering or a related field

• At least 2+ years of experience with JavaScript and Node.js

• Hands-on expertise in REST, MySQL/PostgreSQL, WebSocket, MongoDB, Redis, etc.

• Familiarity with Docker and AWS infrastructure

• Understanding of data security principles

• Proficiency in JavaScript, web stacks, libraries, and frameworks

• Strong analytical and problem-solving aptitude skills

JOB DUTIES & RESPONSIBILITIES:

• Lead and mentor developers thru coaching and sharing of knowledge
• Architecture design and Develop new functionality and critical business logic of software products
• Enhance existing applications and software products and design new product

SKILLS:

• Strong knowledge on software implementation best practices
• Strong knowledge of SQL Server and/or Oracle database including store procedure, trigger etc.
• Knowledge of security and vulnerability best practices to design secure web application
• Knowledge of web application architecture with horizontal and vertical scalability
• Experience of working with application with large dataset of millions or billions of row in database table
• Ability to adapt quickly to an existing, complex environment
• Ability to complete all phases of software development life cycle including analysis, design, development, testing and support
• Ability to develop large scale web/database applications
• Ability to work on multiple projects with multiple deadlines
• Ability to communicate clearly with business users and project manager
• Ability to innovate and provide functional applications with intuitive interfaces

 Job Description:                                           

Few words about Unify Technologies: Unify a Digital Engineering company. We help our clients by providing Digital Engineering Services to develop high-quality products. We have extensive experience in software product engineering and a successful track record of delivering on aggressive delivery plans without compromising on the quality in Cloud, Mobile, and Data practices.

If you are looking for a solid opportunity to put your Computer Science skills to test you are in the right place. We need some hard-core programming help to help enhance our Data management frameworks used to move data between platforms and systems seamlessly.

Employment Type: Full-Time

Position: Sr SDE - Senior Software Development Engineer (Java Back-End Development)

Project: Product-Apple’s Maps and Advertising Platforms

Experience: 4-8 Years

Key Skills: Java Programming + Spring Boot + REST / Java + SQL

Joining time: Immediate to 30 days

Work Location: Hyderabad - India

Education: Master’s/Bachelor’s degree in Computer Science, Statistics, Engineering or a related technical discipline will be preferred

Detailed Job Description: At UNIFY, great ideas have a way of becoming great products, services, and customer experiences very quickly. Bring passion and dedication to your job and there's no telling what you could accomplish. 

We are looking to hire extraordinary individuals with strong communication and interpersonal skills and ability to work effectively across multiple business and technical teams. As a part of this team, you will build cutting edge software service, one that is continually innovating and is proud of making a difference. 

You should be a self-starter, motivated, with exceptional interpersonal skills as well as a positive and flexible approach to problems. The applicant should have the ability to thrive in a fast-paced, tight deadline delivery timeline. As a part of this dynamic team, the applicant will help us build the product experience on a global scale. 

If you’ve responded positively to the above questions and want to work in a great, international team, that is passionate, creative, ambitious, open to knowledge-sharing, and loves to cooperate with each other - join us!

Key Qualifications:

• Minimum of 4 years experience implementing large-scale production systems

• Hands-on experience with design, development and productizing highly available, distributed and scalable transactional enterprise systems.

• Strong hands-on programming experience in Java/J2EE building middleware or backend applications.

• Strong development experience of microservices architecture in a highly distributed environment with web services, Spring, Spring Boot, Hibernate and SOA

• Experience with RDBMS like Oracle and NoSQL databases such as MongoDB, Couchbase, Elasticsearch

• Sharp troubleshooting skills and real-world systems deployment experience.

• Proven track record with rapid development cycles and demanding schedules

• Experience doing Software Development using Agile methodologies

• Understanding or experience working on Cloud technologies is a plus

Roles & Responsibilities:

• Design and implement web APIs.

• In this role, you will be involved in the end to end cycle of design, development and deployment of core services for mission-critical customer-facing applications. 

• Results-oriented and demonstrate a high degree of ownership and accountability.

• Experience handling distributed vendor resources

• Creative problem solver and excellent collaborator, who thrives in a fast-paced, innovative environment.

• Communicate quickly and effectively; vertically and horizontally through the organization.

• Influence others to get things done.

• Must possess excellent problem-solving & analytical skills.

• Handle ambiguity and solve problems despite uncertainties.

• Ability to lead large projects focusing on innovation, teamwork and results.

• Proven track record of achieving outstanding results in a professional career