Senior Backend Developer (Python, SQL, NoSQL)

Datafin; Wes-Kaap; On-site; ZAR 60 000 - 100 000; Full time

Job summary

Join a cutting-edge finance platform as a Senior Backend Developer, where you'll lead the development of scalable analytics services for a dynamic Procurement Marketplace. This role places you at the center of data-driven decision-making, empowering teams with actionable insights. You'll operationalize AI models, ensuring their scalability and performance while designing robust APIs. Collaborate with talented professionals to create innovative solutions that enhance user experience and drive business success. If you're passionate about clean code and continuous improvement, this is the perfect opportunity to make a significant impact in a forward-thinking environment.

Qualifications

• 5+ years in Backend Development or Data Engineering.
• Proficient in Python, SQL, and NoSQL databases.
• Experience with cloud platforms like AWS, GCP, or Azure.

Responsibilities

• Design and maintain analytics services and APIs for Marketplace data.
• Collaborate on scalable data pipelines and analytics features.
• Integrate Machine Learning models to enhance features.

Skills

Python

SQL

NoSQL

AWS

GCP

Azure

Spark

Kafka

Redshift

BigQuery

Tableau

Looker

Power BI

RESTful APIs

Education

Bachelor's Degree in Computer Science

Master's Degree in Engineering

Tools

Tableau

Looker

Power BI

Spark

Kafka

Redshift

BigQuery

Job description

ENVIRONMENT:

LEAD the development of scalable, high-performance analytics services tailored for a Procurement Marketplace as the next Senior Backend Developer sought by a cutting-edge Finance Platform. You’ll be at the heart of data-driven decision-making processes, building tools and infrastructure that empower internal teams and Marketplace partners with actionable insights. You will operationalize AI models ensuring its scalability and performance while you design, develop, and maintain robust analytics services and APIs that serve Marketplace data. Applicants must have 5+ years’ work experience in Backend Development, Data Engineering, or a related field and proficiency in Python, SQL, NoSQL, AWS, GCP/Azure, Spark, Kafka, Redshift, BigQuery, Tableau, Looker, Power BI and RESTful API.

DUTIES:

• Design, develop, and maintain robust analytics services and APIs that serve Marketplace data.
• Collaborate with team members to define and implement scalable data pipelines and analytics features.
• Integrate Machine Learning models into production systems to enhance features such as demand forecasting, dynamic pricing, personalization, fraud detection, and recommendation engines.
• Operationalize AI models, ensuring scalability, performance, and reliability in real-world applications.
• Develop monitoring and feedback mechanisms to track model performance, retraining needs, and data drift.
• Engineer end-to-end solutions that combine real-time and batch processing to deliver actionable insights at scale.
• Ensure high availability and performance of analytics services in a production environment.
• Participate in architecture discussions and strategic planning around data services, Marketplace intelligence tools, and AI capabilities.

REQUIREMENTS:

Experience/Skills –

• 5+ Years of professional experience in Backend Development, Data Engineering, or related field.
• Proficiency in modern backend languages such as Python.
• Strong experience with SQL and NoSQL databases, data modeling, and query optimization.
• Experience with cloud platforms (AWS, GCP, or Azure) and distributed data systems (e.g., Spark, Kafka, Redshift, BigQuery).
• Familiarity with data visualization and dashboarding libraries (e.g., Tableau, Looker, Power BI).
• Solid understanding of RESTful API development and microservices architecture.

Nice to haves –

• Master’s or Bachelor’s Degree in Computer Science, Engineering, or related field.
• React experience.
• Experience in eCommerce or Marketplace Analytics.
• Background in Machine Learning or Statistical Modeling.
• Knowledge of DevOps practices and CI/CD pipelines.
• Contributions to open-source projects or a strong GitHub portfolio.

ATTRIBUTES:

• Passion for clean, maintainable code and continuous improvement.

While we would really like to respond to every application, should you not be contacted for this position within 10 working days please consider your application unsuccessful.

COMMENTS:

When applying for jobs, ensure that you have the minimum job requirements. OnlySA Citizens will be considered for this role. If you are not in the mentioned location of any of the jobs, please note your relocation plans in all applications for jobs and correspondence. Apply here [URL Removed] OR e-mail a Word copy of your CV to [Email Address Removed] and mention the reference number of the job.

Desired Skills:

• Senior
• Backend
• Developer