MS SQL & NoSQL Developer

Black Pen Recruitment; Johannesburg; On-site; ZAR 600 000 - 800 000; Full time

Job summary

A leading recruitment firm is seeking an experienced MS SQL & NoSQL Developer to join a dynamic travel technology team in Johannesburg. The ideal candidate will possess strong expertise in both SQL and NoSQL databases, including practical experience in database design, development, and performance tuning. Responsibilities include designing and maintaining database systems, optimizing queries, and ensuring data integrity. This full-time role offers competitive compensation and opportunities for professional growth within the vibrant travel sector.

Benefits

Competitive salary and benefits package

Opportunities for professional growth

Inclusive team culture

Qualifications

• 5+ years of hands-on experience in SQL and NoSQL database development.
• Strong expertise in at least one relational database management system.
• Solid experience with data modeling and schema design.

Responsibilities

• Design and maintain SQL and NoSQL database systems.
• Develop and optimize database queries and procedures.
• Ensure data integrity and security across platforms.

Skills

Complex SQL queries

Database performance tuning

Agile methodologies

Database administration

Problem solving

Team collaboration

Data security best practices

ETL processes

Education

Bachelor’s degree in Computer Science or related field

Tools

SQL Server

MongoDB

PostgreSQL

Redis

Job description

About the job MS SQL & NoSQL Developer (Travel/Tourism)

Our client is Southern Africa's leading integrated tourism group, operating businesses which range from travel management companies, hotels, lodges and restaurants to craft, curio and jewellery shops and foreign exchange bureaux. They are driven by a commitment to exceptional quality, service and value; its people‑centred business philosophy; the development of mutually rewarding partnerships; constant innovation; and world‑class technology.

Role Overview

Our client is seeking an experienced SQL & NoSQL Developer to join their development team. The ideal candidate will have a strong background in both relational and non‑relational database systems, with a proven ability to design, develop, optimise, and maintain complex data structures and queries. This role requires a mix of analytical thinking, performance tuning expertise, and real‑world experience building scalable, high‑performance data solutions in the travel technology space.

Job Location: Bryanston

Job Type: Full‑time

Workplace: Onsite

Requirements

• Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field.
• Proven ability to write complex SQL queries and optimise them for performance.
• Proven ability to read, understand and amend existing complex SQL queries and optimise them for performance.
• Experience with database administration tasks, including backups, replication, and disaster recovery.
• Familiarity with ETL tools (SSIS) and frameworks.
• Comfortable working in Agile environments.
• Excellent problem‑solving and troubleshooting skills.
• Knowledge of data security best practices.
• Experience with linked servers.
• Solid experience in database performance and debugging.
• Database maintenance – SQL agents, SQL jobs, backups, restores and database sizing.
• Solid experience in SQL maintenance and being able to investigate and find issues.
• Solid experience in MS SQL Synonyms.
• Strong verbal and written communication skills and enjoy working in a team.
• Excellent verbal and written skills, with a knack for simplifying technical ideas for diverse audiences.
• Analytical mindset with a track record of turning insights into actionable solutions.

Responsibilities

• Design, implement, and maintain SQL and NoSQL database systems for applications.
• Develop efficient and optimised queries, stored procedures, views, and triggers.
• Implement and maintain data models, including both relational (OLTP/OLAP) and document/key‑value structures.
• Ensure data integrity, consistency, and security across platforms.
• Follow a very specific naming convention as required by the business.
• Perform data migrations, ETL (Extract, Transform, Load) processes, and data transformations as needed.
• Monitor and optimise database performance, including indexing, query tuning, and capacity planning.
• Collaborate with developers, and managers to meet application and reporting requirements.
• Maintain up‑to‑date documentation of database structures and processes.
• Stay informed on latest trends and best practices in database technologies and recommend improvements.

Qualifications and Expertise

• 5+ years of hands‑on experience in both SQL and NoSQL database development.
• Strong expertise in at least one RDBMS (Relational Database Management System) (e.g., PostgreSQL, MySQL, MS SQL Server, Oracle).
• Strong knowledge of at least one NoSQL database (e.g., MongoDB, Cassandra, Couchbase, DynamoDB, Redis, Dragonfly). Preferably Redis/Dragonfly expertise.
• Solid experience with data modelling, normalisation/denormalisation, and schema design.
• Competitive salary and benefits package
• Opportunities for professional growth and development
• Collaborative and inclusive team culture
• Knowledge transfer in tourism technologies
• Large variety of projects and technologies in the travel sector