query optimization jobs in Johannesburg

To design, build, and maintain robust, scalable data infrastructure that ensures secure, real-time access to operational and supply chain data. This role underpins accurate reporting, advanced analytics, and automationenabling performance optimisation, cost reduction, and smarter decision-making across the logistics value chain 1. Design, build, and maintain ELT pipelines Pipeline success...

Were seeking an experienced Full Stack Data Warehouse Developer with Insurance Industry Experience to help design, build, and support a modern enterprise reporting and analytics platform. This role is ideal for a data professional who enjoys working across the full BI lifecycle, mentoring junior team members, and delivering high-quality, performance-driven insights to the business. What youll...

Intermediate Backend PHP Developer with expertise in event-driven architectures to join a dynamic development team. The ideal candidate will have hands-on experience building robust, scalable, and secure backend applications using PHP, Laravel, and MySQL, with a focus on modern software development principles. What you will do: Develop Robust Backend Applications: Build modular, maintainable, and...

Position: Logistics Specialist and Mid-Level Operations Solutionist Salary: TBC (Gross) for a 3-month probation period, followed by permanent employ. Work Arrangement: Hybrid (in-office and remote), with necessary assets provided (e.g., cell phone, data) Start Date: Upon acceptance of offer Reporting Line You will report to the Head of the Logistics Department, who will oversee your initial...

This is a pivotal role within the department and requires a mature, highly organised individual who can manage multiple priorities with confidence and precision. The Technical Administrator coordinates workflow, enables collaboration across departments, and ultimately assumes full accountability for service delivery and client satisfaction reflecting a culture where ownership and responsibility...

Imagine being part of a team where your analytical superpowers dont just get noticed, they get celebrated. Youll work across borders, tackling challenges that sharpen your skills and expand your expertise, all while making a tangible impact on complex financial landscapes. Flexible thinking, collaborative problem-solving, and a sprinkle of humor go a long way here. Key Responsibilities: -...

We are seeking a Senior Developer with a strong foundation in software engineering, database design, and application development. The ideal candidate demonstrates advanced proficiency in technologies such as ASP.NET Core, WebAPI, SQL, PostgreSQL, and XAML, with a solid understanding of object-oriented design principles and Agile development methodologies. This role is responsible for designing,...

Software Developer Intern Key Responsibilities: - Develop and implement software applications using C++, C#, and python. - Integrate APIs into software applications, ensuring seamless data flow and functionality. - Optimize software applications for maximum speed and scalability. - Collaborate with the backend and front-end team to design and implement RESTful - APIs for data exchange. - Conduct...

Position overview The System Configuration Analyst is a crucial role responsible for managing and maintaining the integrity and alignment of the Sonata RDA system configuration with its business processes and requirements. This role consults with business stakeholders and analysts on the business requirements, translating the requirements into system configurations, and ensures changes are...

The position is responsible for managing, planning, and coordinating Transport operations, which includes delivery and driver management. Financial Responsibility " Ensure costs are captured in the month incurred (Labour, Vehicle R&M, Stock Losses, Fuel). " Ensure unprocessed costs are accrued in the month incurred. " Ensure monthly transport department expenditure is maintained within budget a...

Role Summary You will collaborate with cross-functional stakeholders to support, analyze, and enhance telecom-focused software products. The role suits an analytical thinker who enjoys working with data, solving technical challenges, and continuously improving systems in a dynamic, fast-paced environment. Key Responsibilities - Analyze and extract data to support reporting, insights, and...

This position plays a key role in developing and maintaining relationships with healthcare professionals (GPs), pharmacists, and internal teams. This role focuses on coordinating interactions, facilitating knowledge-sharing, managing events, and ensuring seamless communication between HCPs and the company. Additionally, you will be responsible for pharmacy engagement and training to ensure...

Key Responsibilities - Lead a team of Java developers, providing technical guidance, mentorship, and performance management. Self-starter who takes accountability for the teams delivery - Oversee the design and delivery of end-to-end customer projects, including UI, SQL data models, and business logic implementation. - Architect and develop integrations with external systems (web services, APIs,...

Main Purpose of job: - You will be responsible for managing and optimizing the debtors' ledger, ensuring timely collection of outstanding debts, resolving customer queries and processing payments efficiently. - This role requires an eye for detail, strong communication skills, a proactive approach to problem-solving, and the ability to work collaboratively with internal teams and external...

Minimum requirements for the role: - Must have a National Senior Certificate; A post matric tertiary qualification in a related field will be an advantage - Minimum 5 years administrative/sales experience within a similar function - Must have excellent written and verbal communication skills, with the ability to build relationships telephonically, compose professional emails, and accurately...

Job Purpose: To ensure optimal technical support, machine performance, and customer satisfaction for Electrical & Automation products by managing product knowledge, field operations, maintenance, and service processes. The role drives structured feedback from customers and field personnel, facilitates continuous improvement of machines and processes, and provides technical guidance to internal...

Objective of the Role: The purpose of the role is to design, develop, and optimise robust data solutions that enable exceptional customer experiences and operational efficiency. The Senior SQL Developer will work collaboratively across business and technology teams to implement high-quality ETL processes, data warehouse solutions, reporting platforms, and analytics tools. The role requires...

Purpose To design, develop, test, deploy, maintain and enhance software systems and applications based on specifications, while adhering to established standards. The candidate will translate requirements from the business or technical analyst and actively participate with the delivery team in design and problem-solving. Technology Used - AWS Platform - Jira - Confluence Minimum Education -...

Job Experience & Skills Required: - A minimum of 5 - 8 years development experience - BSc Degree or relevant IT Qualification - Experience in the following technologies & design patterns: C#, .Net Core (latest version), SQL, Angular - AWS / Azure / GCP experience beneficial - RabbitMQ - Solid Principles / OOP - Experience in designing a database system from the ground up - Experience in database...

Key Responsibilities: - Develop and maintain back-end systems using Python, ensuring robust, scalable, and high-quality solutions. - Design, build, and maintain RESTful APIs for both internal and external integration. - Work with MySQL databases, including query optimization and schema design. - Collaborate with Front-End Developers, product owners, and other stakeholders for seamless system...