Lead Developer

A1L Digital; Roodepoort; On-site; ZAR 446,400 - 613,800; Full time

Job summary

A leading telecommunications firm in Roodepoort is seeking a Lead Developer for a contract of 6 to 12 months. The ideal candidate will have advanced SQL skills, know the telecom billing domain, and be proficient in designing bill templates. Experience with Docker for microservices and soft skills in problem-solving and collaboration are additionally required. This role targets mid-senior level professionals and focuses on business consulting and IT services.

Qualifications

• Strong in SQL operations including joins, subqueries, aggregates, window functions.
• Hands-on experience in managing billing or invoice generation modules.
• Ability to define data sources and map them to templates or reports.
• Experience with Docker‑based billing microservices.
• 4+ years of relevant experience with collaborative problem solving.

Skills

MySQL DB and SQL queries

Telecom Billing Domain knowledge

Bill Template Design

Deploy & debug Docker based microservices

Soft skills

Tools

Docker

Git

C/C++

Node JS

Kafka

Redis cache

AngularJS

Next JS

Java Spring Boot

Job description

Our client in the telecommunications sector is looking for a Lead Developer on a contract duration of 6 to 12 months.

Qualifications

• Proficiency in MySQL DB and SQL queries - Strong in SQL operations including joins, subqueries, aggregates, window functions, and familiar with use of indexes and EXPLAIN plans.
• Telecom Billing Domain knowledge - Familiarity with telecom billing and invoice generation processes, with a preference for hands‑on experience in managing billing or invoice generation modules. Familiar with sending PDF bills via email, print, and SMS notifications.
• Bill Template Design - Familiarity with bill template or report designer tools; ability to define data sources and map them to elements within templates or reports.
• Deploy & debug Docker based microservices - Experience with Docker‑based billing microservices, including deployment and configuration; skilled in monitoring and resolving issues in invoice generation workflows.
• Soft skills - Problem‑solving: ability to debug and solve issues efficiently; collaboration: working effectively within a team using Git; experience with C/C++ or Node JS development; basic idea of Kafka and exposure to Redis cache; experience with AngularJS or Next JS or Java Spring Boot; 4+ years of relevant experience.

Seniority Level

• Mid‑Senior level

Employment Type

• Contract

Job Function

• Information Technology
• Business Consulting and Services

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