Java Developer

JOB DESCRIPTION

Experience: 3-8 years

Wissen Technology is now hiring for a Java Developer - Mumbai with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting. 

Required Skills:

• Exp. - 3-8 years
• Experience in Core Java and Spring Boot.
• Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns.
• Should have the ability to analyze, design, develop and test complex, low-latency client- facing applications.
• Good development experience with RDBMS.
• Good knowledge of multi-threading and high-performance server-side development.
• Basic working knowledge of Unix/Linux.
• Excellent problem solving and coding skills.
• Strong interpersonal, communication and analytical skills.
• Should have the ability to express their design ideas and thoughts

Java Lead 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. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting. About Wissen Technology: Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen has successfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals. Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’. Our team consists of 1200+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world. Wissen Technology offers an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation. We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider. Experience: 8–13 years in Java development. Domain Expertise: Background in product-based companies, investment banking experience preferred. Leadership: Proven ability to lead teams of 3–4 members. Technical Depth: Hands-on with complex systems and distributed architectures. Soft Skills: Strong analytical thinking, problem-solving, and excellent communication. Process Knowledge: Expertise in end-to-end SDLC and Agile methodologies. Tech Stack ● Languages & Frameworks: Core Java, J2EE, Spring Boot, Spring Framework. ● Architecture: RESTful APIs, Microservices. ● Persistence: Hibernate/JPA. ● Databases: Postgres, MySQL (or similar). ● Tools: Maven/Gradle, CI/CD pipelines. ● Cloud: AWS/Azure (nice to have). 

Role: Sr. Azure Data Engineer

Experience: 8–10 Years

Work Timings: 1:30 PM – 10:30 PM IST

Location: Bellandur Bengaluru (Work from Office)

Company: Chevron

Employment Type: 6- 12 months Contract

Role Overview

We are seeking an experienced Senior Data Engineer to design and deliver scalable cloud data solutions on Azure. The ideal candidate will have strong expertise in Databricks, PySpark, and modern data architectures, with exposure to energy domain standards like OSDU.

Key Responsibilities

• Architect and design robust Azure-based data solutions using Databricks, ADLS, and PaaS services
• Define and implement scalable data Lakehouse architectures aligned with OSDU standards
• Build and manage end-to-end data pipelines for batch and real-time processing using PySpark
• Establish data governance frameworks including metadata, lineage, security, and access control
• Implement DevOps best practices (CI/CD, Azure Pipelines, GitHub, automated deployments)
• Collaborate with stakeholders to translate business needs into technical solutions
• Develop and maintain architecture documentation, solution patterns, and standards
• Provide technical leadership and mentorship to engineering teams
• Optimize solutions for performance, cost, reliability, and security
• Ensure alignment with enterprise architecture and compliance standards
• Drive adoption of modular and reusable cloud data components

Required Skills & Qualifications

Core Technical Skills

• Azure Databricks, Apache Spark (PySpark), Delta Lake, Unity Catalog
• Azure Data Lake Storage (ADLS), Azure Data Factory, Synapse Analytics
• Strong experience in Python-based data engineering
• Data pipeline development (batch + real-time)

Architecture & Advanced Skills

• Data Lakehouse architecture and distributed systems
• Microservices, APIs, and integration frameworks
• OSDU (Open Subsurface Data Universe) or similar energy data models

DevOps & Tools

• CI/CD tools: Azure Pipelines, GitHub Actions
• Infrastructure as Code: Terraform or similar

Other Skills

• Data governance, security, compliance, and cost optimization
• Strong analytical and problem-solving skills
• Excellent communication and stakeholder management

As a Senior Principal Engineer, you’ll lead a team of engineers through challenging development projects. Come join a highly collaborative team of skilled engineers with a passion for quality. 

What You’ll do:

• Work in an agile environment, orchestrating a group mostly comprised of skilled PHP engineers of various levels to complete User Stories authored by professional Product Managers
• Architect highly scalable/transaction heavy web/API applications
• Work with 1-2 Frontend resources (in addition to backend PHP) through projects in React, Angular (maintenance), MooTools/Jquery (deprecation), Socket.io and serverside NodeJS
• Work with Product and QA Managers in multiple grooming sessions and sprint planning for your team
• Collaborate/coordinate with other Engineering Managers and Leads
• Work with QA and Application Support teams to triage bugs
• Work with DevOps to automate deployment and monitoring of applications
• Design and develop Restful APIs using frameworks with design patterns
• Design JSON payloads and various payload contexts
• Convert complex business rules and workflows from User Story requirements into SalesForce type CRM applications and client facing web portals
• Work with monolithic legacy codebases, along with design patterns in newer repositories
• Work with large database schemas of 500+ tables 
• Write complex queries. Efficiently joining upwards of 20 tables, some containing +10m rows. In T-SQL or Doctrine ORM
• Integrate 3rd party platforms via APIs and callbacks
• Write Unit tests and documentation 

What You Have:

• 10+ years professional experience developing APIs & web based applications in PHP as an individual contributor
• Prior experience working with organized development teams (5+ member pods)
• Prefer hands-on experience using MS SQL Server, CosmosDB, but other relational databases/NoSQL ok (MySQL, Postgres, MongoDB)
• Professional experience using open source PHP frameworks. Symfony3+ preferred (Laravel, CodeIgniter - ok) 
• Experience scaling in LAMP, but also leveraging Redis, RabbitMQ, Elastic Search (ELK), SupervisorD, Socket.io, centralized Session stores
• Prefer experience designing fault tolerant architecture on cloud deployments (loadbalancing, clustering, reducing/eliminating single points of failure, etc)
• Understand branching, merging, pull requests and conflict resolution in Git (Bitbucket or Github)
• Experienced in leveraging issue tracking systems and wikis for documentation (Jira/Confluence)
• Comfortable on CentOS Linux, command line, SSH, SFTP, SCP…
• Full stack is a plus (JavaScript, CSS, HTML, React/Angular/Vue)
• Able to onboard self and others while working entirely remotely in EST
• Experience in Azure PaaS and IaaS
• Experience crafting architecture diagrams in Visio or LucidChart
• Problem solving skills and a proactive work style
• Strong interpersonal & communication skills

At F5, we strive to bring a better digital world to life. Our teams empower organizations across the globe to create, secure, and run applications that enhance how we experience our evolving digital world. We are passionate about cybersecurity, from protecting consumers from fraud to enabling companies to focus on innovation. 
 

Everything we do centers around people. That means we obsess over how to make the lives of our customers, and their customers, better. And it means we prioritize a diverse F5 community where each individual can thrive.

• Design, coding, enhancements, and bug fixing in DNS and related areas.

• Bring up new ideas to improve the day-to-day challenges in the design/functionality.

• Should be able to provide technical direction to the ongoing and future projects in the team.

• Keep the product vulnerability free by uplifting/fixing the open issues.

• Build tools and infrastructure to improve these F5’s components and features. 

• Set an example of software design and development innovation and excellence. 

• Research, investigate and define new areas of technology to enhance existing or new products directions

• Evaluate performance of products to fine-tune, and refactor the design as per the requirements to scale up.

• Must have worked in security and related areas.

• Document software designs via functional specifications and other design documents

• Conduct presentations internal and external, mentoring the team members

• May participate in the hiring and onboarding process

• Collaborate with team members and technical leads

• Responsible for upholding F5’s Business Code of Ethics and for promptly reporting violations of the Code or other company policies.

Knowledge, Skills and Abilities: 

Essential 

• Deep understanding of data structures & algorithm. 

• Expert in C, C++ with hands-on experience

• Fair understanding of scripting languages Python and JavaScript

• Expertise in Linux user-level programming and exposure to Linux networking stack.

• Good understanding on TCP/IP concepts.

• Proven experience with security standards.

• Excellent analytical and problem-solving skills. 

• Good understanding of Network security and DNS modules

• Excellent Understanding of networking technologies and OS internals.

• Prior experience in leading and delivering project/programs involving multiple teams.

• Prior experience of leading and mentoring senior engineers to deliver critical projects.

Nice-to-have 

• Prior experience developing DNS and related modules is a Plus.

• Good understanding of network protocols like TCP, UDP, HTTP, SSL, DNS, FTP etc. 

• Experience with CI/CD (git, pipeline etc.). 

Qualifications

• Requires a minimum of 15+ years of related experience with a Bachelor of Engineering in ECE/Computers or similar years’ experience with ME/MTech in ECE/Computers.

• Excellent organizational agility and interpersonal skills throughout the organization.

• Ability to work flexible hours for better collaboration with international teams.

F5 Inc. is an equal opportunity employer and strongly supports diversity in the workplace. The Job Description is intended to be a general representation of the responsibilities and requirements of the job. However, the description may not be all-inclusive, and responsibilities and requirements are subject to change.

• Design the architecture of new services to deliver timely communication from server to
• client and server to server, while still functioning alongside existing server components
• Describe and implement the communications across multiple network layers, considering
• performance, reliability, and flexibility with respect to the underlying infrastructure
• Enhance and expand the ORM layer of the studio’s in-house web framework
• Craft software solutions for supporting flexibility in resource allocation, from compute to storage
• Consult with technical operations on appropriate Kubernetes-based infrastructure design
• Design for performance, and measure the effects
• Review your colleagues’ code, and learn from their reviews as well
• Identify, document, and communicate best practices for the engineers who use the fruits of your labour
• Requirements:
• 7+ years professional work experience
• BS or MS degree in Computer Science or a related technical field
• Must be proactive, self-directed, detailed and organized
• Proficient in PHP, C++, or Go
• Knowledge of relational databases and SQL, preferably MySQL
• Experience with in-memory NoSQL databases, such as Redis
• Ability to debug issues within custom code quickly
• Passion for developing scalable and maintainable software systems

• Minimum 1-year experience is mandatory
• Proven Software Development Skills in Laravel Framework and Core PHP
• Good knowledge and experience in OOPS concepts and Core PHP
• Good Database designing skills in MySQL
• Experience in known APIs like Google, Facebook, etc.
• Knowledge of JavaScript, JQuery, JASON, AngularJS will help
• Passion for Software Development and Coding
• Good Knowledge and Experience in WordPress will help.