Senior Database Administrator (DBA)

Description :

Key Responsibilities :

Primary Database Expertise :

1. One resource should have PostgreSQL as their primary database expertise.

2. One resource should have MySQL as their primary database expertise.

3. One resource should have either PostgreSQL or MySQL as their primary database expertise.

Secondary Database Skills :

- Proficiency in other databases such as MongoDB, MSSQL, ElasticSearch, Oracle, and Redis is a plus.

- Hands-on experience with databases in cloud environments, including GCP, AWS, or Azure, is a must.

- Familiarity with database migrations on GCP, AWS, or Azure cloud platforms is advantageous.

Qualifications and Skills :

- Minimum of 4 years of hands-on experience with MySQL, PostgreSQL, and MSSQL databases.

- Strong logical thinking skills to analyze and solve complex database-related issues.

- Excellent communication and articulation abilities, with the capacity to interact effectively with both technical and non-technical stakeholders.

- Proficiency in handling customer calls and addressing their database-related queries and concerns.

- Experience in one of the following primary databases : PostgreSQL, MySQL.

- Knowledge of secondary databases like MongoDB, MSSQL, ElasticSearch, Oracle, and Redis is a plus.

- Prior experience with database administration in GCP, AWS, or Azure cloud environments.

- Familiarity with database migration processes on cloud platforms is a beneficial skill.

This role offers an opportunity to work with diverse database technologies and cloud platforms, making it an ideal position for a skilled Senior DBA who enjoys a dynamic and challenging environment. If you have a strong database background and are looking to take your career to the next level, we encourage you to apply.

Senior Database Administrator (DBA)

Database Reliability & Performance  •  Senior Individual Contributor

• Experience: 6–9 years in production database administration / engineering
• Level: Senior Individual Contributor (hands-on)
• Function: Data Platform — reliability, performance, and governance across relational and distributed SQL & NoSQL DBs.

About the Role

We are hiring a Senior Database Administrator to own the health, performance, and reliability of the data layer behind a high-scale, multi-tenant platform. Our environment spans several independent PostgreSQL database instances, a cache-first read tier, change-data-capture pipeline, analytics and archival stores. Should be capable of implementing NoSQL stores (Cassandra / ScyllaDB) & MySQL  end to end as we scale.

This is a hands-on senior IC role for someone who has run demanding production databases and wants full ownership: partitioning and maintenance, performance tuning, monitoring, uptime, disaster recovery, and the security and data-governance documentation that keeps a regulated, multi-tenant platform audit-ready. You will work closely with, and take direction from, engineering leadership — translating priorities into a well-run, well-documented data platform.

What You'll Own

PostgreSQL Depth

• Administer multiple production PostgreSQL instances (v16+), including schema/DDL review, migrations, and release coordination.
• Design and maintain table partitioning strategies (range/hash/time-based) and automate partition lifecycle — creation, retention windows, and safe drops.
• Own query and instance performance tuning: EXPLAIN/ANALYZE, indexing strategy, autovacuum/bloat management, connection pooling (e.g. PgBouncer), and parameter-group tuning.
• Execute zero-downtime schema changes using expand–migrate–contract / blue-green patterns; assess lock impact and avoid long ACCESS EXCLUSIVE locks on hot tables.
• Manage replica topology (writer/reader endpoints), replication lag, and read-scaling as load grows.
• Partner with app teams on migration tooling (e.g. Flyway) and paired forward/rollback scripts; enforce idempotent, reviewed, tested DDL.

NoSQL & Scale

• Data-model, deploy, and operate distributed NoSQL clusters — Cassandra and/or ScyllaDB — including partition/clustering key design, compaction strategy, repair, and node operations (bootstrap, decommission, scale-out).
• Lead the planned migration of high-volume payload tables from partitioned PostgreSQL to Cassandra/ScyllaDB: capacity planning, dual-write/backfill design, cutover, and validation.
• Tune distributed-store read/write paths, consistency levels, and cluster sizing for predictable latency at scale.
• Support the cache-first architecture (Redis) and change-data-capture / streaming pipelines (e.g. Kafka) that move data to analytics and cold-archival stores.

Operations, Reliability & DR

• Own database uptime and SLOs; build and maintain monitoring, alerting, and dashboards for the key signals (latency, replication lag, CPU/IO, connections, vacuum lag, error rates).
• Define and regularly test backup and disaster-recovery strategy — RPO/RTO targets, point-in-time recovery, restore drills, and cross-AZ / future multi-region readiness.
• Drive incident response for database-related issues: triage, mitigation, root-cause analysis, and follow-up actions.
• Write and maintain runbooks (partition maintenance, failover, archival, DR, migration procedures) and participate in an on-call rotation for the data layer.
• Establish production-change discipline: pre-flight and post-deploy verification, rollback criteria, and backup verification before destructive operations.

Security, Governance & Documentation

• Implement and maintain database access control — least-privilege roles, schema-scoped permissions, and row-level security (RLS) for multi-tenant isolation.
• Own data-governance documentation: PII maps, per-table retention policies, audit-readiness, and the controls behind privacy-regulation compliance (e.g. GDPR / DPDP-style erasure and legal-hold workflows).
• Author and maintain architecture decision records (ADRs), schema documentation, and monitoring/runbook docs so the data platform is legible to the wider team.
• Uphold encryption-at-rest/in-transit posture and safe handling of sensitive columns; keep the data layer aligned with the platform's compliance requirements.

Coding & Automation Bar (Required)

This role is automation-first, not click-ops. The right candidate treats repetitive database work as something to script away and can drop into application code when a problem demands it.

• Strong scripting in Python and Bash for automation of maintenance, backups, partition management, backfills, and health checks.
• Comfortable with infrastructure-as-code (e.g. Terraform) and configuration management (e.g. Ansible) for reproducible database infrastructure.
• Solid SQL and PL/pgSQL; able to read and debug application-layer database code and, worst case, write or patch application code (e.g. Python/Node/Java) to unblock a fix.
• Fluent with Git-based workflows, code review, and CI for database migrations and tooling.

Required Qualifications

• 6–9 years operating relational databases in demanding production environments, with deep PostgreSQL expertise (internals, partitioning, replication, performance tuning).
• Hands-on experience running at least one distributed NoSQL store in production — Cassandra or ScyllaDB strongly preferred (other wide-column/distributed stores considered).
• Proven ownership of backup/DR, monitoring, and incident response for production databases.
• Strong scripting/automation background (Python, Bash) and experience with IaC.
• Experience with managed cloud databases (AWS RDS or equivalent) and understanding of instance/parameter-group tuning, replicas, and failover.
• Experience designing for multi-tenancy and data isolation at scale.
• Clear written communication — able to produce runbooks, ADRs, and governance docs a team can rely on.

Nice to Have

• Experience migrating workloads from PostgreSQL to Cassandra/ScyllaDB (or similar relational-to-distributed migrations).
• Familiarity with Redis as a cache tier and with CDC / streaming pipelines (e.g. Kafka, Debezium).
• Exposure to Flyway (or Liquibase), pgTAP or similar schema testing, and PgBouncer.
• Working knowledge of privacy regulations (GDPR, India DPDP) and audit/compliance processes.

How You Work

• Ownership mindset — takes a directive and runs it to done, with sound judgment on trade-offs.
• Reliability-first and detail-oriented; disciplined about verification, rollback, and documentation.
• Collaborative in a high-performing engineering team; communicates clearly with developers and leadership.
• Pragmatic and scale-aware — designs for where the platform is going, not just where it is.

Key Responsibilities

Administer, monitor, and support database platforms including Couchbase, PostgreSQL, and Oracle.

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

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.

We are looking for a Database Engineer (PostgreSQL) with 1-5 years of experience to manage, optimize, and maintain PostgreSQL databases. The ideal candidate will have expertise in PostgreSQL, SQL Optimization, Database Design, Performance Tuning, Data Migration, and Backup & Recovery.

Responsibilities:

• Design, develop, and maintain PostgreSQL databases.
• Optimize SQL queries and improve database performance.
• Perform database design, indexing, and schema management.
• Execute data migration, backup, recovery, and disaster recovery activities.
• Monitor database health and troubleshoot performance issues.
• Collaborate with development teams to ensure scalable database solutions.

Requirements:

• 1-5 years of PostgreSQL database experience.
• Strong SQL and performance tuning skills.
• Knowledge of database backup, recovery, and migration processes.

Mactores is the agent-native AWS modernization firm. Most modernization work doesn't ship, it stalls in pilots, slips a year, or lands at three times the budget. We exist to ship it: production systems running, legacy retired, outcomes measured. Our delivery is built on Aedeon, the agent platform built by Mactores' founders' sister company, which absorbs the repetitive 60–70% of engagement work, discovery, dependency mapping, validation, test generation, that traditional consulting bills human hours against. Forward-deployed engineers own the rest: architecture, judgment, and cutover, on dates we commit to in the contract.

We are seeking an experienced Senior Database Developer to lead and support Oracle to PostgreSQL/Aurora PostgreSQL migration initiatives. The role involves deep hands-on work across SQL refactoring, schema conversion, DMS operations, performance tuning, and post–go-live stabilization. The candidate will work closely with application teams, cloud engineers, and stakeholders to ensure a smooth, performant, and compliant migration.

What you will do?

• Refactor and convert Oracle SQL, PL/SQL, and database objects to PostgreSQL-compatible SQL/PLpgSQL.
• Analyze and remediate AWS SCT (Schema Conversion Tool) findings and limitations.
• Manage and maintain Flyway migration codebase (versioned scripts, repeatable migrations, rollbacks).
• Identify, troubleshoot, and fix database-related application bugs.
• Perform query optimization for PostgreSQL (execution plans, indexing strategies, query rewrites).
• Support and monitor AWS DMS during full load and CDC phases.
• Diagnose and resolve DMS data and performance issues.
• Perform data validation and reconciliation between Oracle and PostgreSQL.
• Collaborate with application teams to align SQL behavior and performance expectations.

What are we looking for?

• Bachelor's degree in Computer Science or a related field.
• 5+ years of experience as an Oracle/PostgreSQL DBA and database developer.
• Strong experience with Oracle Database and PostgreSQL / Aurora PostgreSQL.
• Hands-on expertise in Oracle to PostgreSQL migration.
• Advanced SQL and query performance tuning skills.
• Experience with AWS SCT and AWS DMS.
• Knowledge of Flyway/Liquibase or similar schema migration tools.
• PostgreSQL internals: indexing, statistics, execution plans.
• AWS services: RDS/Aurora, CloudWatch, IAM (preferred).

You will be preferred if:

• Familiarity with automation and configuration management tools, such as Ansible, Chef, or Puppet.
• Familiarity with IAAC tools such as Terraform, CloudFormation.
• Familiarity with CI/CD implementation tools like Liquibase/Flyway.
• AWS Certified Database – Specialty.
• AWS Certified Solutions Architect.

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

CTC: Up to ₹24 LPA

Applicants must read the JD and understand the JD throughly

Job Title: Database & DevOps Engineer

Location: Chennai, Tamil Nadu (On-site/Hybrid)

Experience: 2+ years -

Job Summary

We are looking for a skilled Database & DevOps Engineer with 2+ years of hands-on experience in database administration, cloud infrastructure, CI/CD pipelines, automation, and AI application deployment. The role involves managing database and infrastructure environments, automating deployments, supporting AI/LLM workloads, and ensuring high availability, security, performance, and scalability.

Key Responsibilities

Database Management

• Install, configure, monitor, and maintain SQL and NoSQL databases.

• Manage database backup, recovery, replication, and disaster recovery.

• Optimise performance through indexing, query tuning, and monitoring.

• Ensure database security, integrity, and availability.

• Troubleshoot database issues and provide timely resolutions.

DevOps, Infrastructure & AI Operations

• Design, implement, and maintain CI/CD pipelines.

• Automate infrastructure provisioning using Infrastructure as Code tools.

• Deploy and manage applications across cloud and on-premises environments.

• Configure and maintain containerised applications using Docker and Kubernetes.

• Deploy and support AI/ML, LLM, RAG, and agentic AI applications.

• Configure and manage GPU-enabled infrastructure for AI workloads.

• Support model serving, vector databases, and AI application APIs.

• Monitor application, infrastructure, and AI-service performance, including availability, latency, resource utilization, and failures.

• Maintain Linux servers and automate routine operational tasks.

• Implement secure management of credentials, secrets, model endpoints, and data access.

• Collaborate with development and AI teams to streamline deployment and release processes.

Mandatory Skills

• 2+ years of hands-on experience in Database Administration and DevOps.

• Strong knowledge of MySQL, PostgreSQL, Microsoft SQL Server, and MongoDB.

• Experience with database backup, restoration, replication, indexing, query optimization, and performance monitoring.

• Hands-on experience with Git and CI/CD tools such as Jenkins, GitLab CI/CD, or Azure DevOps.

• Experience with Docker and Kubernetes.

• Experience with AWS, Azure, or GCP.

• Knowledge of Terraform and Ansible.

• Strong Linux administration and shell-scripting skills.

• Experience with Prometheus, Grafana, ELK Stack, or Nagios.

• Working knowledge of networking, security, SSL/TLS, and load balancing.

• Understanding of LLMs, RAG, embeddings, vector databases, and agentic AI architecture.

• Experience deploying Python-based AI/ML services and APIs.

• Familiarity with model-serving tools such as llama.cpp, vLLM, Ollama, Hugging Face, or equivalent.

• Knowledge of GPU-enabled environments, NVIDIA drivers, CUDA, and containerized AI deployment.

• Understanding of AI/LLM observability, model versioning, security, scaling, and rollback.

• Strong troubleshooting, analytical, and problem-solving skills.

Preferred Qualifications

• Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related discipline.

• Cloud, DevOps, Linux, database, or Kubernetes certifications are an advantage.

Technical Stack

• Databases: MySQL, PostgreSQL, Microsoft SQL Server, MongoDB and vector databases

• Cloud: AWS, Azure, GCP.

• CI/CD: Jenkins, GitLab CI/CD, Azure DevOps

• Containers and IaC: Docker, Kubernetes, Terraform, Ansible

• Monitoring: Prometheus, Grafana, ELK Stack, Nagios

• AI Infrastructure: Python APIs, LLM serving, RAG, embeddings, vector search, GPU/CUDA

• Operating Systems: Linux—Ubuntu, CentOS, Red Hat

Soft Skills

• Excellent communication and collaboration skills.

• Strong ownership and accountability.

• Ability to work effectively in a fast-paced Agile environment.

• Proactive approach to troubleshooting and continuous improvement.

• Ability to manage multiple priorities and deliver on time.

Job Description — L2/L3 Oracle DBA and Oracle Apps DBA 

Experience: 5–10 years of relevant experience​

Support coverage: Dubai customer business hours and on-call support as required 

Role Overview 

We are seeking an experienced Oracle DBA and Oracle Apps DBA to support 

customer Oracle Database and Oracle E-Business Suite (EBS) environments. The role 

involves L2 incident resolution, L3 troubleshooting, performance tuning, patching, 

upgrades, and maintaining database and application availability. 

Key Responsibilities 

Oracle Database Administration 

∙Install, configure, administer, and maintain Oracle databases across 

production and non-production environments. 

∙Monitor database health, availability, performance, storage, and capacity. 

∙Troubleshoot database incidents, connectivity failures, locking, blocking, and 

resource issues. 

∙Analyse AWR and ASH reports, SQL execution plans, and database wait 

events to resolve performance problems. 

∙Configure and manage RMAN backups; perform recovery and restore 

validation. 

∙Administer Oracle RAC, ASM, Grid Infrastructure, and Data Guard 

environments. 

∙Perform database patching, upgrades, migrations, and refreshes through 

approved change procedures. 

∙Manage database users, roles, privileges, auditing, and security controls. 

∙Execute disaster recovery drills, Data Guard switchovers, and failovers. 

∙Automate routine administration and monitoring using shell scripts and SQL. 

Oracle Applications DBA 

∙Administer Oracle E-Business Suite R12.2 application and database tiers. 

∙Monitor and troubleshoot concurrent managers, concurrent requests, 

Workflow Mailer, application services, and login issues. 

∙Perform EBS online patching using ADOP and manage the associated 

patching lifecycle. 

∙Clone and refresh EBS environments using supported tools, including Rapid 

Clone. 

∙Maintain application configuration using AutoConfig and context files. 

∙Administer EBS-related WebLogic Server, Oracle HTTP Server, and Forms 

services. 

∙Troubleshoot application-tier performance and coordinate with functional 

and development teams. 

∙Support EBS upgrades, technology-stack patches, certificate renewals, and 

integration-related incidents. 

∙Maintain operational procedures for application startup, shutdown, backup, 

recovery, and maintenance. 

L2/L3 Support and Customer Operations 

∙Own incidents and service requests within agreed SLAs. 

∙Provide L2 troubleshooting and escalate complex issues with complete 

diagnostic evidence. 

∙Lead L3 investigation, root-cause analysis, and permanent corrective actions. 

∙Support major incidents, communicate progress, and document recovery 

actions. 

∙Raise and manage Oracle Support service requests. 

∙Prepare change plans, risk assessments, validation steps, and rollback 

procedures. 

∙Maintain runbooks, knowledge articles, configuration records, and shift 

handovers. 

∙Coordinate with customer teams and internal infrastructure, storage, 

network, and application teams. 

∙Mentor junior DBAs and identify opportunities to reduce recurring incidents. 

Required Skills and Experience 

∙Hands-on production experience administering Oracle Database, including 

Oracle 10g, 11g, 12c, 18c and 19c. 

∙Strong experience supporting Oracle EBS R12.2 as an Apps DBA. 

∙Practical knowledge of RAC, ASM, Data Guard, RMAN, Data Pump, and 

You'll own heterogeneous database migrations end to end for enterprise customers moving off Oracle and SQL Server onto PostgreSQL and Aurora PostgreSQL. That means running the AWS DMS and SCT toolchain, then doing the part the tools can't: rebuilding procedural business logic in PL/pgSQL when SCT flags a gap it can't close on its own. You ship the runbook, you run the cutover, you validate the result. 

What you'll do?

• Lead end-to-end database migration initiatives, including assessment, planning, schema conversion, execution, and post-migration validation.
• Design, configure, and manage AWS DMS and SCT environments while ensuring migration quality, performance, and reliability.
• Author comprehensive migration runbooks that define execution procedures, validation checkpoints, rollback plans, and operational readiness activities.
• Perform database migration assessments, dependency analysis, compatibility reviews, and migration strategy recommendations.
• Collaborate with infrastructure, application, security, and platform teams to ensure successful migration outcomes.
• Drive migration testing activities, including functional validation, performance testing, failover testing, and production readiness reviews.
• Provide technical leadership and guidance to migration teams while ensuring adherence to AWS migration best practices and governance standards.
• Lead conversion and refactoring of procedural database code — Oracle PL/SQL (packages, procedures, functions, triggers, cursors) and SQL Server T-SQL (stored procedures, functions, triggers) — into PostgreSQL/Aurora PostgreSQL PL/pgSQL, resolving semantic and behavioral differences identified by SCT.

What we're looking for?

• 8–12 years of professional experience in database architecture and migration delivery
• Hands-on expertise in AWS Database Migration Service (DMS) and AWS Schema Conversion Tool (SCT) for enterprise-scale database migrations
• Deep proficiency in Oracle, SQL Server, PostgreSQL, and Aurora PostgreSQL environments, including migration planning, execution, and optimization
• Proven background in delivering heterogeneous database migrations across on-premises, cloud, and AWS environments
• Knowledge of production database operations, including backup and restore strategies, parameter tuning, performance optimization, and failover testing
• Skills in authoring and executing migration runbooks, validation plans, cutover procedures, rollback strategies, and post-migration stabilization activities
• Strong understanding of AWS database services, migration best practices, and integration with broader cloud migration programs
• Experience engaging directly with enterprise customers, architecture teams, and migration stakeholders to drive successful delivery outcomes
• Strong hands-on experience converting Oracle PL/SQL and SQL Server T-SQL business logic to PL/pgSQL, including handling of exception handling models, cursor semantics, autonomous transactions, sequences/identity columns, implicit data type conversions, and proprietary built-in packages/functions with no native PostgreSQL equivalent
• Ability to identify and remediate SCT action items and manual conversion gaps in procedural code (e.g., DBMS_* packages, UTL_* utilities, SQL Server system procedures, dynamic SQL, and nested/recursive procedure calls) and validate converted logic through functional and regression testing.

You'll be preferred if you

• Have tuned production database performance, backup and restore strategy, and failover testing in high-stakes environments.
• Have led migration teams or mentored engineers through complex conversions.
• Bring experience with broader AWS cloud migration programs beyond the database layer.