Job Spec: Senior Back End Engineer (Agentic Systems Engineer)

Location: Stellenbosch - Cape Town (Hybrid)

Reports To: Head of Engineering / CTO

Who we are

Pinotage Health Corporation is building a US healthcare agentic workflow platform that transforms doctor and patient encounters. Our mission is to reduce the administrative burden on physicians through agentic AI systems that are safe, reliable, and clinically correct — so doctors can spend more time with patients, not paperwork.

Our solutions dramatically shorten administrative cycles, improves medical coding accuracy, and reduces operational friction using advanced LLM-powered orchestration systems. This means that doctors can focus on patient care, patients experience improve with doctors that are present, and overall healthcare delivery costs are reduced.

The US health system is one of the most complex, fragmented systems on the planet. US doctors have become so overburdened with compliance and administrative work, that fewer students opt to become doctors and more doctors leave the profession earlier than expected. Meanwhile, the US population is aging and living longer. With fewer doctors serving an enlarging demand, healthcare costs and delivery pressure has gotten to a point where the ecosystem is actively seeking innovative, new ways of doing things – it's a market begging for disruption. Pinotage is positioned perfectly in the eye of that storm.

Our mission is to bring humanity back to healthcare, with our proprietary agentic solutions.

We are a global team with roots in South Africa as our name suggests, and we are building a team of A-players to tackle the problems and opportunities in large, complex markets.

Your Mission

Own the clinical intelligence layer of the platform. You’ll architect, build and evaluate LLM agentic systems for medical coding and documentation, curate datasets, and run SME feedback loops with clinicians — while also engineering the backend that operationalizes these agents in production.

Core Responsibilities

• Design and evaluate LLM agents for medical coding (CPT, ICD-10, NCCI, MDM) and clinical documentation.

• Curate and maintain coding datasets (AMA, CMS) for training and evaluation.

• Write and refine prompt templates, enforce structured outputs.

• Build evaluation rubrics, regression detection workflows, and monitoring pipelines.

• Implement human-in-the-loop workflows for quality assurance.

• Develop backend services (Python, FastAPI, async runtimes) to operationalize AI agents. (ML Ops)

• Cross-disciplinary engagement/work with other teams (DevOps, Product, Frontend & Backend)

Non-Core Responsibilities

• Contribute to frontend integrations / teams

• Deploy AI services via Docker/Kubernetes on GCP, ensuring observability and compliance. Where needed.

Required Experience

• 3–5 years of software development/engineering experience

• PhD or equivalent advanced research background in AI, NLP, or related fields.

• Strong track record in prompt engineering and LLM evaluation.

• Clinical informatics or medical coding domain knowledge.

• Strong Python background & experience Ruby experience is a plus

• Experience with observability frameworks

• Proven ability to design evaluation rubrics and benchmarking frameworks.

• Docker/Kubernetes deployment experience, GCP cloud services.

Nice to Have / Strongly Preferred

• RAG architectures and embedding retrieval systems.

• Healthcare regulatory familiarity (HIPAA, SOC2).

• Vertex AI / Gemini exposure.

• Prior work formalizing AI workflows into defensible IP frameworks.

Qualifications

• Honours degree in Computer Science, Engineering, or a related field; or equivalent professional experience.

• PhD strongly preferred in AI/ML, NLP, or related domains.

• GCP ML Certification or equivalent is advantageous.

Why This Role Matters Pinotage Health is an AI-powered healthcare platform that automates clinical documentation, coding, billing, and compliance for doctors and healthcare orgs.

Our mission is to reduce administrative burden on clinicians using AI.

BrightRock is looking for a permanent Developer. Are YOU it? BrightRock is a dynamic and vibrant player in South Africa’s life insurance industry. We’re passionate

about life insurance and the good it can do. In the digital era, people are collaborating, co-creating

and sharing like never before. Consumers want to take charge and customise every part of their

world to meet their needs. We’re applying these same principles to life insurance cover to create

products that better meet our clients’ needs. Our needs-matched life insurance is a first in the

industry – it’s made just for you at the start, and changes as your life changes.

What you’ll be doing if you get the job:

As a member of our team, the primary focus of your role is to be responsible for the development

and deployment of software components and stand-alone software applications.

You’ll work closely with our Application Foundry team which is made up of Developers, Testers and

Business Analysts.

Who’ll you report to:

You’ll be based within our Information and Communication Technology division at our Sandton,

Johannesburg head office. You’ll report to the ICT Manager: Development.

Your qualifications:

• You must have passed Grade 12 / Matric with an achievement symbol of no less than C for

higher grade Maths

• You must have a degree or diploma in Information Systems, Engineering or Mathematical

Sciences

Your experience:

• You must have 2 to 5 years’ experience in developing solutions using various technologies

like WCF, EF, MVC4/5 and WebAPI

• You must have experience in the Web Development, multithreaded applications and rich

internet applications

Your Knowledge:

• Technologies: .Net 4, LINQ, EF, WebApi.

• Sound understanding of operating systems, specifically Microsoft Windows, as well as

various communication protocols

• Good understanding of UML, XML, HTML, JSON

• Agile development

• Silverlight, WCF, grpc, rest, docker, Kubernetes and WPF knowledge would be beneficial

Your technical skills:

• .Net

o Must have: ASP Net, .Net 4 and above, LINQ

o Beneficial: WPF, Entity Framework, PowerShell, WCF

• Web

o Must have: JavaScript, JQuery and CSS

o Beneficial: TypeScript, Angular, Bootstrap

• SQL

o Must have: Extensive experience creating queries, triggers, procedures and

functions

o Beneficial: SQL Administration and Optimisation

• Productivity tools

Azure DevOps, GIT or Jenkins Your outputs

• Technical Specification

• Components and Applications Development and Maintenance

• Unit Testing

• Software Release and Component Configuration

Your character traits:

• You must continually strive and have the perseverance to find better ways to solve the challenges at hand

• You must be able to work independently

• You must be self-managed and driven

• You must be a problem solver

• You must have good communication skills

• You must be a fast worker and delivcer accurate results

• You must be able to manage conflict

• You must be able to thrive under pressure

• You must be able to lead a small team of Developers

Your package and growth prospects:

BrightRock offers a competitive pay-package and, as a growing player in a major financial services

sector, there is excellent scope for future growth in this permanent position.

QA Senior Software Engineer - Card Rails

Location: Remote first Head Office: Cape Town, South Africa; with offices in Johannesburg, Mauritius and Nairobi, Kenya)

Department: Engineering - Card Rails

Company: Peach Payments

About Peach Payments Peach Payments is a cutting-edge fintech company shaping the future of digital payments across Africa. We empower businesses of all sizes - from startups to enterprise merchants - by providing a secure, scalable, and seamless payments infrastructure.

Team Mission Card Rails is a POD within the Card Processing Tribe and which builds and maintains the; Card Gateway services, integrations with Acquiring banks, the Card Gateway infrastructure, Acquirer connectivity and monitoring and alerting. Our mission is to provide reliable, compliant and secure card payment processing that is cost effective for the following transactions:

● Card Not Present CNP Ecommerce Transactions. ● Card Present(CP): Instore Transactions.

󰙦 Role Overview Peach Payments is revolutionizing its Quality Assurance function, transitioning to a proactive, "shift-left" approach where QA Engineers are embedded within engineering pods. As a Senior QA Engineer within the Card Rails team, you will occupy a critical junction between legacy stability and future innovation. You will own and lead the quality assurance strategy, ensuring our systems meet rigorous ISO8583 standards for Acquirer and Scheme sign-off, while simultaneously architecting AI-driven automation to redefine how we validate payment lifecycles.

Our Tech Stack ● Languages: Typescript, Javascript, Node.js ● Infrastructure: AWS Lambda, Serverless) ● Database: MySQL, PostgreSQL ● Tools: Jira, Confluence, Git, K6.io, Cypress, Postman ● CI/CD & Automation: GitLab Pipelines ● Monitoring: Fusion Reactor / Logz.io

Role expectations Payments Domain Quality Assurance

● Deep understanding of end-to-end card payment flows, from authorization through clearing, settlement, and reconciliation, across both Card-Present CP and Card-Not-Present CNP channels.

● Ability to design risk-based test strategies aligned with payment scheme rules, merchant use-cases, and regulatory requirements.

EMV & Card-Present Processing ● QA experience validating EMV transaction flows (contact & contactless),

including: ● Application selection, CVM processing, offline vs online decisioning, and issuer

scripting. ● Validation of EMV tags, TLV structures, and kernel behaviour across different

transaction paths. ● Hands-on L3 device testing, including: ● Certification-style functional, negative, and edge-case testing. ● Validation of terminal behaviour against scheme and kernel specifications. ● Coordination of regression testing across firmware, kernel, and host changes.

eCommerce & Card-Not-Present Processing ● Quality assurance for eCommerce card transactions, including: ● Authorization, capture, refund, and reversal flows. ● 3D Secure (where applicable), fraud signals, and risk decisioning scenarios. ● Idempotency, retry logic, and failure-mode testing for high-volume online

traffic. Authorization Models

● Test design and validation for pre-authorizations, incremental authorizations, and delayed captures, including:

● Amount adjustments, partial captures, and expiry handling. ● Scheme-specific rules and edge cases across different acquirers and merchant

categories. ● State consistency across payment lifecycle events.

Tokenization & Sensitive Data Handling ● QA coverage for card tokenization flows, including: ● Token creation, storage, lifecycle management, and detokenization controls. ● Validation of PCIDSS-aligned data handling and masking rules. ● Testing of token usage across recurring, stored-card, and merchant-initiated

transactions. Payment Switch & Acquirer Connectivity

● Testing of payment switch processing, including: ● Routing logic, failover behaviour, and timeout handling. ● Acquirer-specific rules, field mappings, and response code handling. ● Resilience, concurrency, and throughput testing under peak transaction loads.

Payment Scheme Processing

● QA validation aligned with card scheme specifications (e.g. Visa, Mastercard), including:

○ Transaction types, reason codes, and lifecycle consistency. ○ Compliance with scheme mandates and rule changes. ○ Regression strategies to safely roll out scheme updates.

ISO8583 Message Validation ● Strong experience testing ISO8583-based message flows, including: ● Field-level validation, mandatory/conditional fields, and bitmap handling. ● Mapping correctness between internal domain models and external

switch/acquirer messages. ● Negative testing for malformed messages, unexpected fields, and protocol

deviations. Observability & Production Quality

● Ability to define payment-specific quality metrics, such as authorization success rates, decline patterns, and scheme error distributions.

● Use of logs, metrics, and traces to correlate transaction-level issues across distributed payment systems and external partners.

Required soft skills: ● Strategic Solution Design: Ability to design elegant, scalable solutions for new

acquirer integrations and to tackle systemic quality problems at scale. ● Proactive Ownership: Take initiative, own projects end-to-end, thrive in

fast-paced, high-scale environments, and proactively identify and propose solutions for quality gaps while abstracting testing complexity.

● Cross-Functional Collaboration: Work effectively in fully remote teams, with strong written and verbal English communication skills, comfortable collaborating cross-functionally with product, operations, and external partners.

● Technical Articulation: Ability to clearly articulate complex technical and quality concepts to diverse audiences.

● Mentor and empower engineers in quality practices and tooling through constructive feedback.

Why Join Peach Payments? ● Impact: Work on mission-critical payments infrastructure processing millions of

transactions. ● Growth: Be part of a fast-growing company expanding across Africa. ● Culture: Join a high-performance, diverse, and empathetic team focused on

respect for people and merchant success. ● Flexibility: Remote-first hybrid working - work from anywhere while staying

connected to a world-class team. ● Benefits - Benefits include a generous annual and life leave allocation, market

related salaries, owning the piece of the Peach pie through VSOP and more.

Be part of our journey to redefine digital payments in Africa! At Peach Payments we value diversity and are committed to inclusion across race, gender, age, religion, identity, and experiences.

Senior Software Engineer - Full Stack Merchant Experience Pod]

Location: Hybrid Head Office: Cape Town, South Africa; with offices in Johannesburg, Mauritius and Kenya)

Department: Engineering

Company: Peach Payments

About Peach Payments Peach Payments is a cutting-edge fintech company shaping the future of digital payments across Africa. We empower businesses of all sizes - from startups to enterprise merchants - by providing a secure, scalable, and seamless payments infrastructure.

We have a hybrid working environment We offer a hybrid work environment, allowing for a combination of remote and in-office work. Whilst there is currently no in-office requirement for this team, this may change periodically, as determined by your manager or the organisation.

Mission: Why This Role Exists The MX Pod is responsible for key functions that directly impact the onboarding and configuration experience for our merchants. This includes onboarding, user management, merchant configuration, and the setup of sandbox configuration for testing and support.

● Onboarding: Setting up new merchants for our products, connections and payment methods, ensuring a seamless start.

● Dashboard: Our team oversees the dashboard's design and general management. ● Merchant Login: Ensuring a secure and intuitive login experience for our

Dashboard. ● Merchant Configuration: Customising and editing merchant business and account

settings. ● User Management: Handling access controls and user roles for both merchants

and peach users. ● Transaction Listing: Providing merchants with transaction records and details for

easy tracking and analysis. ● User Logs: Keeping track of user activity for security and auditing. ● Internal Dashboard: A tool for our Peach users to complete daily tasks

Our Tech Stack ● Languages: Typescript, Node.js, React ● Infrastructure: AWS Lambda, Serverless) ● Database: MySQL, PostgreSQL ● Tools: Jira, Confluence, Git ● CI/CD & Automation: GitLab Pipelines

Role expectations Successfully able to build new features and enhance existing MX features

● Design, build, and integrate technical requirements alongside the team across our full product portfolio

● Ensure secure, scalable, and compliant payment processing to our backend Effective troubleshooting and debugging of issues

● Independently diagnose and propose solutions for issues and incidents, leveraging logs, monitoring, and code analysis

Competencies: What You Bring

Technical Expertise: ● 5 years of experience in cloud-based backend engineering ● Strong experience with NodeJS, Typescript and React ● AWS experience (primarily Lambda, API Gateway and Serverless) ● Database experience MySQL, PostgreSQL)

Problem-Solving & Ownership: ● Ability to design elegant, scalable solutions for new features ● Able to iteratively maintain and evolve existing features to meet best practices and

modern standards ● Takes initiative, owns projects end-to-end, and thrives in a fast-paced, high-scale

environment

Collaboration & Communication: ● Works well in a fully remote team, with strong written and verbal communication

skills in English ● Comfortable working cross-functionally with product, operations, and external

partners

Why Join Peach Payments? ● Impact: Work on mission-critical payments infrastructure processing millions of

transactions ● Growth: Be part of a fast-growing company expanding across Africa ● Culture: Join a high-performance, diverse, and empathetic team focused on

respect for people and merchant success ● Flexibility: Remote-first hybrid working - work from anywhere 3 hours of SAST

while staying connected to a world-class team ● Benefits - Benefits include a generous annual and life leave allocation, market

related salaries, owning the piece of the Peach pie through VSOP and more

Be part of our journey to redefine digital payments in Africa!

At Peach Payments we value diversity and are committed to inclusion across race, gender, age, religion, identity, and experiences.