8 Senior technologist Jobs and Work in Johannesburg Gauteng

Senior SQL Developer
DVT —Johannesburg, Gauteng
- Full-time
Quick Apply
Senior UX Designer, Creative
Publicis Groupe Holdings B.V —Johannesburg, Gauteng 2194
Quick Apply
2d
Senior Lawyer, Corporate/Commercial (Digital Legal Delivery)
Herbert Smith Freehills —Johannesburg, Gauteng
- Full-time
9d
Creative Content Hub Lead
iqbusiness South Africa —Johannesburg, Gauteng
9d
Senior Process Engineer (Gold)
DRA Global —Johannesburg, Gauteng
- Full-time
Quick Apply
Pre-Sales Tech Support Rep II
RELX —Johannesburg, Gauteng
- Full-time
Pre-Sales Tech Support Rep II
LexisNexis —Johannesburg, Gauteng
- Full-time

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Senior UX Designer, Creative
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A balance of analytical and creative thinking, comfort with both data and ambiguity. You’ll work closely with multidisciplinary teams, including strategists,…
Quick Apply
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Creative Designer
Control A (Pty) Ltd —Jet Park, Gauteng
5-8 years’ experience gained within an activations/experiential agency (those with a higher level of experience will also be considered).
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Senior SQL Developer

DVT -
Johannesburg, Gauteng

Quick Apply

Job Details

Full-time

Full Job Description

DVT is a leading global software development and data engineering company, delivering innovative technology solutions to some of the world's most respected brands. We pride ourselves on engineering excellence, agile delivery, and a people-first culture. Our teams work across industries, solving complex problems with cutting-edge technology. We are a community of passionate technologists who continuously push the boundaries of what's possible.

We are looking for a Senior SQL Developer to join our Data & Analytics Practice. In this client-facing role, you will be responsible for the design, development, and maintenance of complex SQL databases, writing efficient queries, stored procedures, and triggers. You will play a key role in database architecture, performance tuning, and mentoring junior developers.

This is a consultative engineering role — you will work directly with clients to understand their business challenges, architect robust database solutions, and lead delivery teams in a fast-paced, agile environment. You will be a technical leader, mentor, and advocate for modern database engineering best practices.

Key Responsibilities

1. Database Design & Development

Schema Design: Design, implement, and maintain database schemas, including tables, indexes, and relationships to support business requirements.
Stored Procedures & Triggers: Develop and manage stored procedures, functions, and triggers to automate database operations and enforce business rules.
SQL Query Optimization: Write and optimize complex, high-performance SQL queries to ensure efficient data retrieval and manipulation.
Data Modeling: Design and implement data models that accurately represent the structure and relationships of data, including dimensional and relational modelling where required.

2. Performance & Integrity

Performance Tuning: Identify and resolve performance bottlenecks in database queries, indexing strategies, and infrastructure.
Data Integrity & Security: Ensure data accuracy, consistency, and security through proper validation, constraints, and access control mechanisms.
Database Version Control: Implement and maintain robust database version control practices, including change scripts and migrations.

3. ETL & Data Integration

ETL Processes: Develop and manage processes for extracting, transforming, and loading data from various sources into target databases.
Data Pipelines: Build and maintain reusable data integration patterns, parameterised scripts, and modular solutions.

4. Client Engagement & Analysis

Requirements Gathering: Work directly with client stakeholders to elicit, translate, and manage technical and business requirements.
Solution Design: Lead architectural and design sessions, ensuring alignment with business goals and enterprise strategies.
Documentation: Produce clear, high-quality technical documentation across the project lifecycle (pre, during, and post-delivery).
Estimation & Scoping: Contribute to project planning, estimation, and risk assessment for database initiatives.

5. Technical Leadership & Mentorship

Mentoring: Share knowledge and provide guidance to junior developers on database-related tasks, promoting best practices and code quality.
Agile Delivery: Actively participate in and guide Agile ceremonies (Scrum, Standups, Sprint Planning, Kanban).
Standards: Enforce database engineering standards, naming conventions, and governance practices across all deliverables.
Troubleshooting: Investigate and resolve complex database-related issues and problems in production and non-production environments.

6. Business Intelligence & Collaboration

BI Integration: Connect databases to business intelligence tools (Power BI, SSRS, etc.) for reporting and analysis.
Collaboration: Work closely with developers, business analysts, and stakeholders to understand requirements and develop robust solutions.
Staying Updated: Keep up-to-date with the latest SQL Server technologies, trends, and best practices.

Technical Competencies

Essential (Core Expertise)

Microsoft SQL Server: Deep, production-grade experience with SQL Server (2016+).
T-SQL: Advanced proficiency in writing complex queries, stored procedures, functions, and triggers.
Performance Tuning: Proven ability to optimise queries, indexing, and execution plans.
Database Design: Strong experience in schema design, normalisation, and data modelling.
ETL: Experience with SQL Server Integration Services (SSIS) or similar ETL tools.
Version Control: Experience with database version control tools (e.g., Redgate, Azure DevOps, Git).
Tools: Proficiency with SQL Server Management Studio (SSMS), Azure Data Studio, or similar.

Advantageous (Nice to Have)

Azure SQL: Experience with Azure SQL Database or Azure SQL Managed Instance.
Business Intelligence: Exposure to Power BI, SSRS, or SSAS.
Open Source: Experience with PostgreSQL or MySQL.
DevOps: CI/CD for database deployments.
Data Warehousing: Experience with dimensional modelling (Star Schemas) and data warehousing concepts.

Qualifications & Experience

Essential:

5+ years of experience in SQL development within the Microsoft ecosystem.
Proven experience in database design, performance tuning, and ETL processes.
Strong client-facing or consulting experience is highly valued.

Advantageous:

BSc Computer Science, Engineering, Mathematics, or equivalent 3-year qualification.
Microsoft SQL Server certification (e.g., MCSA, MCSE).
Experience in the financial services, insurance, or healthcare sectors.

Why Join DVT?

Work with cutting-edge database technologies on real-world, large-scale projects.
Be part of a globally recognised software engineering brand.
Collaborative, agile culture with a strong focus on continuous learning and certification.
Opportunity to mentor and lead — not just code.
Competitive remuneration and benefits.
Exposure to diverse industries and challenging client problems.

Quick Apply

Refine Your Search

senior technologist jobs in johannesburg gauteng

Senior SQL Developer

Senior UX Designer, Creative

Senior Lawyer, Corporate/Commercial (Digital Legal Delivery)

Creative Content Hub Lead

Senior Process Engineer (Gold)

Pre-Sales Tech Support Rep II