Senior Full-Stack Developer - EST Working Hours (Remote)

ISTA Personnel Solutions SA is a dynamic and fast-growing BPO company headquartered in South Africa. We specialize in providing top-tier operational support to U.S.-based organizations. Unlike recruitment agencies, we function as a direct extension of our clients’ teams—delivering high-quality service with precision, efficiency, and a personal touch.

We’re currently looking for a highly motivated and skilled Full-Stack Developer to join our innovative team. This role involves the design, development, and maintenance of custom software applications, with strong involvement in both front-end development and back-end architecture—including seamless API integrations. Experience in data analytics will be a strong advantage.

PLEASE NOTE:

• Working Hours: This role requires you to work EST hours Mon - Fri from 9am to 6pm EST (15h00 to 24h00 South African time - subject to change dependent on daylight savings)
• Internet Requirements: A fixed fibre line with a minimum speed of 25 Mbps (upload & download) and the ability to support a wired Ethernet connection is mandatory. Applicants without a fixed fibre line cannot be considered.
• Power Backup: A reliable power backup solution is required to manage load shedding and power outages. Applicants without a power backup cannot be considered.
• Work Environment: This is a remote role for South African Citizens only.

Responsibilities:

• Design, develop, test, and deploy high-quality custom software solutions using JavaScript, Python, and related technologies.
• Build and maintain scalable and secure API connections with various internal and external services.

• Develop intuitive and responsive user interfaces (UI) that enhance user experience.

• Collaborate with cross-functional teams, including product managers, designers, and other developers, to define, design, and ship new features.
• Write clean, well-documented, and efficient code.
• Perform code reviews to ensure code quality and adherence to best practices.
• Troubleshoot, debug, and upgrade existing software.
• Participate in the entire application lifecycle, focusing on coding and debugging.
• Stay up to date with emerging technologies and industry trends.
• (Optional, if applicable for data analytics focus): Analyze complex datasets, develop data models, and implement data visualization tools to support business insights.

Requirements

• 5+ years of demonstrable professional experience as a Software Developer or in a similar role, with a strong portfolio of completed projects.
• Strong proficiency in JavaScript, including modern frameworks/libraries (e.g., React, Angular, Vue.js).
• Strong proficiency in Python, with experience in popular frameworks (e.g., Django, Flask).
• Demonstrable experience in building and consuming RESTful APIs and other web services.
• Solid understanding of front-end technologies and development processes, including HTML5, CSS3, and responsive design principles.
• Experience with version control systems (e.g., Git).
• Ability to work independently and as part of a team in a fast-paced environment.
• Excellent problem-solving and analytical skills.
• Strong communication and interpersonal skills.

Preferred (Huge Plus):

• Experience with data analysis, manipulation, and visualization tools/libraries such as Pandas, NumPy, Matplotlib, Seaborn, or D3.js
• Familiarity with cloud platforms such as AWS, Azure, or Google Cloud Platform
• Solid understanding of database systems, including SQL and NoSQL technologies
• Experience working with CI/CD pipelines for streamlined deployment and development workflows

If you are not contacted within 14 working days, please consider your application unsuccessful.