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This job expired on 09/08/2026. It no longer accepts applications.
Intermediate to Senior API Developer
Keystroke Holdings · Municipalité de Johannesbourg
Job description
About the role
We are looking for an experienced API Developer who can work across intermediate to senior levels to design, build and maintain robust API solutions. The role involves leveraging .Net, Java, Python and cloud services to deliver high‑quality micro‑service architectures.
Key responsibilities
- Design, develop and maintain RESTful APIs using .Net/.Net Core, C# and Java.
- Implement serverless and containerised solutions on AWS (Lambda, ECS/EKS, EC2, etc.).
- Integrate APIs with front‑end applications and back‑end databases, including SQL Server and Snowflake.
- Collaborate with cross‑functional teams in an Agile environment to deliver features iteratively.
- Write clean, testable code and create unit tests to ensure reliability.
- Participate in CI/CD pipelines using Azure DevOps and maintain documentation in JIRA.
Required profile
- Minimum 5 years of professional experience with .Net/.Net Core, C#, Python, PowerShell and SQL.
- At least 5 years of experience developing Java‑based applications.
- Proven hands‑on experience with a broad range of AWS services.
- Strong background in micro‑services architecture and domain‑driven design.
- Familiarity with Snowflake and Matillion ETL environments is an advantage.
- Experience working in Agile teams and using JIRA for task management.
Required skills
- .Net.Net Core, C#
- Java
- Python
- PowerShell
- SQL
- AWS Lambda, API Gateway, DynamoDB, EC2, EKS, ECS, EventBridge, S3, CloudWatch, SQS
- Microservices, API development
- Domain‑driven design
- Snowflake, Matillion
- Clean Code principles, Unit Testing
- CI/CD, Azure DevOps
- JIRA
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Keystroke Holdings
Municipalité de Johannesbourg
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