Database Developer at Wissen Technology · Mumbai · 6 - 12 years · Profitable · Posted 22 Sep 2025

We are looking for an experienced DB2 developer/DBA who has worked in a critical application
with large sized Database. The role requires the candidate to understand the landscape of the
application and the data including its topology across the Online Data store and the Data
Warehousing counter parts. The challenges we strive to solve include scalability/performance
related to dealing with very large data sets and multiple data sources.
The role involves collaborating with global team members and provides a unique opportunity to
network with a diverse group of people.
The candidate who fills this role of a Database developer in our team will be involved in building
and creating solutions from the requirements stage through deployment. A successful candidate
is self-motivated, innovative, thinks outside the box, has excellent communication skills and can
work with clients and stakeholders from both the business and technology with
ease.
Required Skills:
Expertise in writing complex data retrieval queries, stored procs and performance tuning
Experience in migrating large scale database from Sybase to a new tech stack
Expertise in relational DB: Sybase, AZURE SQL Server, DB2 and nosgl databases
Strong knowledge in Linux Shell Scripting
Working knowledge of Python programming
Working knowledge of Informatica
Good knowledge of Autosys or any such scheduling tool
Detail oriented, ability to turn deliverables around quickly with high degree of accuracy Strong
analytical skills, ability to interpret business requirements and produce functional and technical
design documents
Good time management skills - ability to prioritize and multi-task, handling multiple efforts at
once
Strong desire to understand and learn domain.
Desired Skills:
Experience in Sybase, AZURE SQL Server, DB2
Experience in migrating relational database to modern tech stack
Experience in a financial services/banking industry

About Wissen Technology
About
The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains.
With offices in US, India, UK, Australia, Mexico, and Canada, we offer 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.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to Work®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
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The recruiter has not been active on this job recently. You may apply but please expect a delayed response.
10+ years of experience in Data Architecture, Data Engineering, or Data Platforms
• Strong expertise in IBM DB2 / On-Prem Relational Databases
• Strong expertise in PostgreSQL
• Hands-on experience with the Azure Data Ecosystem, including:
▪ Azure Data Factory (ADF)
▪ Azure Data Lake Storage Gen2 (ADLS Gen2)
▪ Azure Databricks / Synapse Analytics
▪ Azure Event Hub / Service Bus
▪ Azure Functions
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- 3+ years in a technical leadership role
- Strong expertise in Python and SQL
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- Solid understanding of database design and performance tuning
- Experience with Azure cloud services (AWS familiarity preferred)
- Working knowledge of ML/AI integration in enterprise systems
- Experience in client-facing or consulting environments preferred
- Experience with Databricks or modern data platforms
- Exposure to ETL tools such as Talend
- Experience with BI tools (e.g., Power BI)
- Exposure to regulated domains such as Pharma, Healthcare
The recruiter has not been active on this job recently. You may apply but please expect a delayed response.
Role: Oracle DBA – GoldenGate & Database Migration
Location: Bangalore / Hyderabad
Experience: 8–15 years
Key Responsibilities:
- Manage Oracle databases in production and non-production environments.
- Strong hands-on experience with Oracle GoldenGate for replication, CDC, and data synchronization.
- Lead/support database migration, upgrade, and transformation projects.
- Perform database performance tuning, backup/recovery, troubleshooting, and high availability activities.
- Work on migration planning, execution, validation, and post-migration support.
- Collaborate with application, infrastructure, and cloud teams for end-to-end migration activities.
Must-Have Skills:
- 8–15 years of strong Oracle DBA experience.
- Hands-on expertise in Oracle GoldenGate.
- Proven experience in DB migration projects.
- Strong knowledge of Oracle RAC, Data Guard, RMAN, performance tuning, and troubleshooting.
- Good understanding of Unix/Linux and SQL/PLSQL.
- Excellent communication and stakeholder-management skills.
Location: Bangalore / Hyderabad
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Job Title: Remote AS400 Professional (7+ years of experience)
We're seeking an experienced AS400 professional to join our team remotely! The ideal candidate will have a strong background in IBM iSeries (AS400) systems, including system administration, database management, and application development.
Key Responsibilities:
- System administration, configuration, and security
- Application development using RPG, Java, PHP, C++, .NET, and SQL
- Integration with other platforms, such as ERP, CRM, and SCM systems
- Troubleshooting and resolving technical issues
- Collaborating with stakeholders, including business users, IT teams, and management
Required Skills:
- 7+ years of experience with AS400 systems
- Proficiency in RPG, CL, COBOL, or other programming languages
- Strong analytical and problem-solving skills
- Excellent communication and teamwork skills
Nice to Have:
- Experience with system upgrades and migrations
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Role Descriptions: Azure data engineer
SN Required Information Details
1 Role** Azure Cosmos DB Developer
2 Required Technical Skill Set** Primary - PySpark Azure Cosmos DB
Secondary -Python, Microsoft Fabric
3 No of Requirements** 4
4 Desired Experience Range** 8 to 12
5 Location of Requirement Pune
Desired Competencies (Technical/Behavioral Competency)
Must-Have**
1. Deep hands-on experience with Python,Pyspark,Spark batch,notebook in Azure
2. Experience in Cosmos DB – including data modeling, indexing, partitioning, consistency levels, and performance tuning.
3. Strong understanding of Cosmos DB APIs (Core SQL API, MongoDB API, etc.) and integration patterns.
4. Proficiency in query optimization and troubleshooting Cosmos DB performance issues.
5. Experience in data processing using PySpark and Python.
6. Familiarity with Microsoft Fabric for data engineering and analytics workflows.
7. Proficient using source code management tools such as Git or GitHub
8. Experience with Test Driven Development and / or Behavior Driven Development.
Good-to-Have 1. Exposure to data governance tools like Azure Purview.
2. Familiar with various design patterns
3. Familiar with Azure: SQL Managed Instance, Cosmos DB, Storage Services, Azure Functions
4. Global project experience, and excellent communication skills, verbal and written, and soft skills in agile projects
SN Responsibility of / Expectations from the Role
1 Design and implement scalable and high-performance solutions using Azure Cosmos DB.
2 Develop data ingestion and transformation pipelines using PySpark and Azure Data Factory.
3 Optimize Cosmos DB performance through indexing, partitioning, and query tuning.
4 Collaborate with architects and data engineers to ensure best practices in data modeling and cloud architecture.
5 Implement and maintain CI/CD pipelines for automated deployments and testing.
6 Troubleshoot and resolve technical issues related to Cosmos DB and data pipelines.
Desirable Skills:
Keyword:
Skills: Digital : Python~Digital : Databricks~Digital : PySpark~Microsoft Fabric~MySQL
Experience Required: 8-10.
Key Responsibilities
Design, develop, and maintain scalable applications using .NET Framework / .NET Core
Work with databases using MS SQL Server, Entity Framework, and Dapper
Build and consume RESTful APIs using ASP.NET MVC / Web API
Collaborate with front-end teams using HTML, CSS, JavaScript, Angular/React
Implement cloud solutions using Microsoft Azure (App Services, Azure SQL, Web Jobs, Automation)
Conduct code reviews and mentor junior developers
Ensure application performance, security, and scalability
Follow best practices for coding, testing, and deployment
Required Skills
Strong experience in C#, .NET Framework, .NET Core
Hands-on experience with MS SQL Server
Expertise in ASP.NET MVC, Web API
Proficiency in Entity Framework / Dapper
Experience with Git or similar version control systems
Front-end experience with Angular
Experience in project leadership or team handling
Strong Senior Developer – PL/SQL, SQL & ETL (Microsoft SSIS) Profile
2
Mandatory (Experience 1) – Must have minimum 5+ years of strong hands-on experience in PL/SQL and SQL development, including complex stored procedures, functions, queries, joins, data manipulation, and query/performance optimization.
3
Mandatory (Experience 2) – Must have strong hands-on experience in ETL development using Microsoft SSIS, including building, maintaining, optimizing, and troubleshooting SSIS packages for large-volume data movement and transformation.
4
Mandatory (Experience 3) – Must have solid experience working with Data Warehousing concepts and architectures, including data models, fact/dimension structures, ETL data flows, and enterprise reporting/data warehouse environments.
5
Mandatory (Experience 4) – Must have experience managing batch jobs, scheduling, and data pipelines, ensuring timely and reliable execution of enterprise ETL workflows.
6
Mandatory (Experience 5) – Must have hands-on experience in production support for SSIS/ETL and data warehouse jobs, including monitoring job execution, troubleshooting failures, performing root cause analysis, and implementing preventive fixes.
7
Mandatory (Experience 6) – Must have experience with data quality, validation, and troubleshooting, including identifying and resolving data discrepancies/issues affecting downstream reports, dashboards, and analytics.
8
Mandatory (Experience 7) – Must have experience with unit, integration, and regression testing of SQL, PL/SQL, and ETL components, along with strong documentation of technical designs, data mappings, data flows, and deployment processes.
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Perform database performance tuning, optimization, and troubleshooting.
Write and optimize complex SQL queries, stored procedures, and scripts.
Ensure database availability, reliability, backup, recovery, and security compliance.
Support production incidents, root cause analysis, and ongoing operational improvements.
Collaborate with application, infrastructure, and support teams to resolve database-related issues.
Required Skills
5 to 10 years of hands-on experience in Database Administration.
Strong experience with Couchbase, PostgreSQL, and/or Oracle databases.
Expertise in performance tuning, query optimization, indexing, and SQL development (Complex Queries, Stored Procedures, Scripts)
Experience with database monitoring, backup, recovery, and maintenance activities.
Production Support, Troubleshooting & RCA
Strong analytical and troubleshooting skills.
Nice to Have
Experience with cloud platforms such as AWS, Azure, or GCP.
Exposure to database automation and scripting
Job Title: Remote AS400 / IBM i Professional
Experience: 6+ Years
Work Mode: Remote
Job Summary
We are looking for an experienced AS400 / IBM i Professional with 6+ years of hands-on experience in IBM iSeries (AS400) environments. The ideal candidate should have strong knowledge of system administration, database management, application development, security, troubleshooting, and platform integration.
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- 6+ years of experience working with AS400 / IBM i / iSeries systems.
- Strong hands-on experience in AS400 system administration and application support.
- Proficiency in one or more of the following:
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- COBOL
- Other AS400 programming languages.
- Strong knowledge of DB2 for i / DB2-400 and SQL.
- Experience with AS400 troubleshooting, debugging, and production support.
- Understanding of IBM i system architecture, jobs, libraries, objects, and subsystems.
- Experience with application and system integrations.
- Strong analytical and problem-solving capabilities.
- Excellent communication and teamwork skills.
Nice-to-Have Skills
- Experience with AS400 / IBM i system upgrades and migrations.
- Knowledge of IBM i security, user access management, and compliance.
- Experience with ERP, CRM, or SCM integrations.
- Knowledge of enterprise security and compliance standards.
- Familiarity with industry-specific regulations such as HIPAA and PCI-DSS.
- Exposure to modern technologies such as Java, PHP, C++, .NET, or related integration technologies.
- Experience working in Agile or other structured development environments.
Qualifications
● 3-8 years experience in Cloud Database Administration
● Proficient in PostgreSQL database management, including installation, configuration, and performance tuning.
● Experience with Amazon RDS or Cloud SQL and managing databases in cloud environments.
● Proficient in PostgreSQL/MySQL database management, including installation, configuration, and performance tuning.
● Proven experience as a Database Administrator with a focus on
PostgreSQL/MySQL.
● In-depth knowledge of database design, implementation, and management for both PostgreSQL/MySQL environments.
● Familiarity with database security, backup procedures, and performance tuning for both systems.
● Strong analytical and problem-solving skills.
● Excellent communication and collaboration abilities.
● Relevant certifications (e.g., PostgreSQL Certified Professional, MySQLDatabase Administrator) are a plus.
Skills:
● Expertise in PostgreSQL/MySQL database management systems.
● SQL programming and query optimization for both databases.
● Data modeling and database design for PostgreSQL/MySQL.
● Backup and recovery procedures for both environments.
● Performance tuning and optimization for PostgreSQL/MySQL.
● Security protocols and measures for PostgreSQL/MySQL.
● Capacity planning and scalability for both systems.






