About Us

Tamara is the leading fintech platform in Saudi Arabia and the wider GCC region with a mission to help people make their dreams come true by building the most customer-centric financial super-app on earth. The company serves millions of users in the region and partners with leading global and regional brands such as SHEIN, Jarir, noon, IKEA and Amazon, as well as small and medium businesses.

Tamara is Saudi Arabia’s first fintech unicorn and is backed by Sanabil Investments, a wholly owned company by the Public Investment Fund (PIF), SNB Capital, Checkout.com, amongst others. The company operates from its headquarters in Riyadh, with additional regional and global support offices.

Your Role

We are looking for a Senior Machine Learning Engineer (MLE) to join our Risk Data Science team. You will play a key role in designing, building, deploying, and scaling ML models that drive credit risk, fraud prevention, behavioral scoring, and other risk-related decision systems across our business.

You will work closely with data scientists, risk analysts, and engineering teams to transform research prototypes into high-performance, production-grade solutions that operate at scale in real-time decisioning environments.

Your Responsibilities

Model Deployment & Scaling

• Productionise risk and fraud models developed by the DS team using robust, efficient, and maintainable architectures
• Design low-latency, high-availability APIs and pipelines for real-time model inference.
• Implement batch scoring systems for periodic risk assessments.=

MLOps & Infrastructure

• Build and maintain CI/CD pipelines for model deployment and monitoring.
• Set up automated feature engineering pipelines, leveraging feature stores.
• Ensure model governance: reproducibility, versioning, auditability, and compliance with regulatory requirements.

Model Monitoring & Maintenance

• Implement real-time and batch monitoring for data drift, concept drift, and model performance.
• Build automated retraining workflows and model rollback mechanisms.

Collaboration with Risk DS

• Work closely with risk data scientists to translate experimental code (Python, notebooks) into production-grade services.
• Advise DS on efficient model architectures for operational environments.
• Optimize feature computation for speed and scalability.

System Design & Integration

• Integrate models with credit underwriting, fraud detection, collections, and merchant risk systems.
• Collaborate with backend engineering to align on API contracts and system interfaces.

Your Expertise

• 6+ years of experience as an MLE, ML Engineer, Mlops Developer.
• Strong Python skills (including Pandas, NumPy, scikit-learn, PySpark, FastAPI/Flask).
• Proficiency in distributed computing frameworks (Spark, Ray) and workflow orchestration tools (Airflow, Prefect).
• Experience with MLOps tools (MLflow, SageMaker, Vertex AI, or similar).
• Strong understanding of model deployment in cloud environments (AWS/GCP/Azure).
• Solid knowledge of microservice architecture, containerization (Docker), and orchestration (Kubernetes).
• Proven track record of deploying and maintaining ML models in production at scale.
• Experience in building and integrating with real-time streaming systems (Kafka, Kinesis, Pub/Sub).

All qualified individuals are encouraged to apply.

The Role:

Ziina is looking for a Senior Platform Engineer, Infrastructure & Developer Experience to join our team. This role is an exciting opportunity to shape the foundation that every Ziina engineer builds on: the infrastructure, CI/CD, and observability systems that keep our rapidly growing fintech platform fast, reliable, and easy to develop. We're at a major inflection point in our growth, with real multi-region and low-latency challenges at scale, and we're looking for the right person to drive the technical excellence that makes scaling possible.

As part of a small, agile team, our ideal candidate is a creative problem-solver with the vision to build from the ground up and the skill to own systems end-to-end. You'll thrive in our fast-paced environment by making tradeoffs and focusing on high-impact solutions. We're looking for someone who is as ambitious as we are to deliver high-quality products to our users. In short, we want owners who are ready to build big things with us.

As a Senior Platform Engineer, Infrastructure & Developer Experience at Ziina you will:

• Build and own scalable, reliable infrastructure that supports high-performance applications across multiple regions
• Own and continuously improve our CI/CD pipelines and release workflows so that shipping is fast, safe, and predictable
• Implement infrastructure as code and automation across all environments to ensure consistency and reduce manual toil
• Improve system observability, monitoring, and incident response so problems are caught early and resolved quickly
• Reduce operational overhead and improve platform stability as we scale
• Enable engineering teams through reliable, efficient platform systems and self-service tooling

To succeed in this role, you likely:

• Have 5+ years of experience in Platform Engineering, DevOps, or SRE, with a strong focus on infrastructure and developer experience
• Have deep expertise with cloud services (ideally AWS) and infrastructure-as-code tools like Terraform, CloudFormation, or Pulumi
• Are proficient with containerization and orchestration — Docker, Kubernetes — and understand microservices architecture
• Have hands-on experience building and maintaining CI/CD pipelines (e.g., GitHub Actions, Jenkins) and observability stacks (Prometheus, Grafana, DataDog, or similar)
• Are comfortable with on-call responsibilities and have a track record of improving incident response practices
• Use the latest AI tools and technologies to boost your productivity
• Are based in, or open to relocating to, the UAE

What would amaze us:

• Proven experience building infrastructure for fintech or other high-reliability, high-throughput platforms
• A track record of tackling real scaling problems — reducing latency, improving resilience, or operating multi-region systems
• History of building platform and developer experience tooling that measurably boosted engineering velocity
• Successful leadership in major infrastructure evolution, including architectural transitions, migrations, or multi-region rollouts
• Active engagement in the tech community through open source contributions, conference speaking, or technical writing

Our tech stack:

We’ve built a modular architecture with the principles of reliability, scalability, and maintainability in mind. Our current stack is:

• Typescript, Node.js and Nest.js for our main application’s backend.
• Swift/SwiftUI for our iOS app, Kotlin for our Android app.
• Next.js, React and Typescript for our web applications.
• GraphQL Federation for our client-facing APIs and Kafka for our inter-service communication.
• PostgresSQL for consistent and durable storage, Redis for quick fetching, Elasticsearch for quick searching.
• AWS for hosting our cloud infrastructure and Kubernetes for orchestrating our workloads.
• Terraform for IaC.
• Github Actions for CI/CD.

The Role

Ziina is looking for a Senior Platform Engineer to join our team. This role is an exciting opportunity for you to shape the future of Fintech in the region by enabling engineering excellence and scalability at Ziina. We’re at a major inflection point in our growth, and we’re looking for the right person to drive technical and organizational excellence, helping us create an engineering culture that attracts top talent from around the world.

As part of a small, agile team, our ideal candidate is a creative problem-solver with the vision to build from the ground up and the skill to own features end-to-end. You’ll thrive in our fast-paced environment by making sound tradeoffs and focusing on high-impact solutions. We’re looking for someone who is as ambitious as we are to deliver high-quality products to our users. In short, we want owners who are ready to build big things with us.

As a Senior Platform Engineer at Ziina you will:

• Work closely with engineering teams to identify pain points and build tools that streamline their workflows and enhance their productivity
• Build, operate, and maintain a reliable, scalable platform infrastructure that supports high-performance applications.
• Implement infrastructure as code and automate workflows to ensure consistency across environments
• Develop self-service tools that empower engineering teams to deploy, monitor, and troubleshoot with minimal assistance
• Establish security best practices across our infrastructure and application stack
• Collaborate with engineering teams to identify pain points and build productivity-enhancing tools

To succeed in this role, you likely: 

• Bring 5+ years of experience in Platform Engineering, DevOps, or SRE
• Have strong expertise with cloud services and infrastructure-as-code tools like Terraform, CloudFormation, or Pulumi
• Are proficient with containerization technologies such as Docker and Kubernetes, and understand microservices architecture
• Have hands-on experience with CI/CD pipelines (e.g., GitHub Actions, Jenkins) and monitoring systems like Prometheus, Grafana, or DataDog
• Are familiar with on-call responsibilities and incident response practices
• Use the latest AI tools and technologies to boost your productivity
• Are based in, or open to relocating to, the UAE

What would amaze us

• Proven experience building fintech platforms that drive impact
• A strong track record of building and scaling high-performing engineering teams
• History of creating platforms that significantly boost developer productivity
• Successful leadership in major platform evolution, including architectural transitions or migrations
• Active engagement in the tech community through open source contributions, conference speaking, or technical writing

Our tech stack

We’ve built a modular architecture with the principles of reliability, scalability, and maintainability in mind. Our current stack is:

• Typescript, Node.js and Nest.js for our main application’s backend.
• Swift/SwiftUI for our iOS app, Kotlin for our Android app.
• Next.js, React and Typescript for our web applications.
• GraphQL Federation for our client-facing APIs and Kafka for our inter-service communication.
• PostgresSQL for consistent and durable storage, Redis for quick fetching, Elasticsearch for quick searching.
• AWS for hosting our cloud infrastructure and Kubernetes for orchestrating our workloads.
• Terraform for IaC
• Github Actions for CI/CD.

Summary: Join a leading DeFi protocol with high Total Value Locked (TVL) as a DevOps Engineer, ensuring 24/7 uptime and seamless operations. This role involves designing CI/CD pipelines and managing cloud security to support a robust and secure infrastructure within the fintech industry.

Responsibilities:

• Design and implement CI/CD pipelines to streamline deployment processes.
• Manage and enhance cloud security measures to protect against potential threats.
• Ensure 24/7 system uptime and reliability for a major DeFi protocol.
• Collaborate with cross-functional teams to implement best practices in DevOps and security.
• Monitor and optimize system performance and cost-efficiency.
• Automate infrastructure provisioning using tools like Terraform.

Required Skills:

• Mastery of Docker, Kubernetes (K8s), and Terraform.
• Proven experience in a fintech environment with high security standards.
• Strong expertise in cloud security and CI/CD pipeline design.
• Excellent problem-solving skills and attention to detail.
• Ability to work in a high-paced, 24/7 operational environment.

The role

As a Senior Python Developer, you will play a crucial role in developing and maintaining infrastructure and data processing services that complement our C++ trading core. This is a Dubai-based role (we're happy to cover the relocation). 

Responsibilities

• Develop and maintain Python-based infrastructure and data processing services.
• Collaborate with C++ developers to ensure seamless integration and optimal performance.

Required Skills & Qualifications

• Strong proficiency in Python with experience in developing infrastructure and data processing services.
• Ability to write clean, efficient, and well-structured code.
• Exceptional problem-solving skills and meticulous attention to detail.
• Strong prioritisation skills.
• Knowledge of financial markets and trading principles.
• Familiarity with Apache Kafka.
• Experience with SQL databases, especially PostgreSQL.
• Solid understanding of Linux systems, including docker and containerisation.
• Experience with Django, Python Asyncio, Redis.
• Experience with setting up CI pipelines for Python projects.

Other Technologies we Use

Experience with any of the following technologies is considered a significant bonus:

• FastAPI
• Pydantic
• Clickhouse
• Docker
• Grafana
• Prometheus
• Ansible
• Kubernetes
• Terraform
• Grafana
• Gitlab

What we offer

• Flexible working hours and a healthy work-life balance.
• Remote-first team.
• The opportunity to work in a thriving, multicultural, fun environment in one of the world’s fastest-growing industries.
• Corporate workations: we regularly go on corporate trips to unique locations all over the world to work, explore the local culture, and get to know each other better.

We are partnering with a venture-backed, early-stage technology company building a programmable loyalty and rewards operating system for global consumer brands. The platform enables brands to launch white-label fan engagement and monetisation experiences—including predictions, quests, digital drops, auctions, and ticketing—without gambling mechanics.

At its core, the platform combines consumer-grade applications with a tokenised exchange and settlement layer, enabling branded tokens to be issued, traded, and distributed at scale. Initial verticals are in global sports and entertainment, with expansion planned into additional IP-driven markets.

The company is now seeking a Founding CTO to lead the architecture and build-out of its protocol, exchange infrastructure, and engineering organisation from day one.

As Founding CTO, you will be responsible for designing, building, and scaling the full technical stack, with a particular focus on the exchange and protocol layer. You will oversee smart contract development, liquidity and market mechanics, wallet infrastructure, and the integration between on-chain systems and high-scale consumer products.

This is a hands-on leadership role suited to a senior Web3 technologist who has shipped production protocols and wants full ownership of technical strategy in a greenfield environment.

Responsibilities

• Exchange & protocol architecture
• Design and deploy a hybrid AMM / orderbook-based exchange for branded tokens
• Build liquidity pools, routing logic, and market-making infrastructure
• Define token economics, liquidity incentives, and trading mechanics
• Smart contracts
• Develop, test, and deploy core protocol contracts, including:
• Token standards
• Liquidity pools and staking
• Rewards distribution and governance
• Lead audit processes and ensure a strong on-chain security posture
• Wallet & settlement infrastructure
• Implement abstracted wallet solutions (e.g. smart accounts, MPC)
• Integrate fiat on/off-ramps and external custody providers where required
• Platform integration
• Oversee architecture connecting the protocol layer to:
• Engagement mechanics (predictions, quests, missions)
• Rewards and commerce systems (drops, auctions, ticketing, merchandise)
• Analytics and reporting dashboards
• Consumer products
• Guide development of mobile (iOS/Android) and web applications delivered under partner branding
• Leadership & strategy
• Hire, lead, and scale the engineering team across protocol, backend, and product
• Set engineering standards, development workflows, and technical roadmap
• Make strategic build-vs-buy decisions and select vendors and tooling

Qualifications

• 5+ years building blockchain or crypto infrastructure
• Proven experience shipping at least one protocol or exchange to mainnet
• Deep understanding of DeFi mechanics (AMMs, liquidity mining, tokenomics)
• Strong production smart contract experience with a clean audit track record
• Experience working with L2s, rollups, or app-chains
• Familiarity with consumer-facing systems and real-time platforms
• Comfortable operating in early-stage, resource-constrained environments
• Able to balance protocol purity with product and user experience needs
• Strong communicator across technical and non-technical stakeholders

Technical environment

• Smart contracts: Solidity (advanced), Foundry / Hardhat, formal verification fundamentals
• Languages: TypeScript/JavaScript, Rust or Go, Python
• Infrastructure: RPC operations, indexers/subgraphs, GCP, Docker/Kubernetes
• Security: Audit coordination, attack vector mitigation (reentrancy, flash loans, oracle risk), monitoring and incident response
• Product stack exposure: React Native or Flutter, PostgreSQL, Redis, event streaming (useful for protocol-to-product integration)

We are supporting a venture-backed, early-stage technology company building a white-label consumer engagement and rewards platform for global brands. The platform enables large-scale fan and customer experiences (e.g. predictions, quests, digital rewards, ticketing and commerce) while incorporating tokenised settlement and rewards infrastructure.

This role represents a true greenfield build. The Founding CTO will define the overall system architecture, technical standards, and engineering culture from day one, while delivering a production-grade platform designed to scale to millions of users.

As Founding CTO, you will take end-to-end ownership of the technology organisation, from initial architecture and hands-on development through to team build-out and long-term technical strategy.

You will work closely with founders and commercial stakeholders, translating product vision into scalable systems and ensuring the platform can support multiple partners, brands, and regions.

Responsibilities

• Platform & architecture
• Define and build the core platform architecture supporting engagement mechanics, rewards, commerce, and analytics
• Establish system design principles covering scalability, security, and performance
• Make key build-vs-buy decisions and select vendors, tooling, and infrastructure partners
• Backend & infrastructure
• Architect and implement backend services supporting real-time event ingestion, points/wallet systems, identity, and compliance controls
• Design robust data pipelines, storage, and API layers
• Own production readiness, including monitoring, alerting, SLOs, and incident response processes
• Consumer products
• Oversee development of mobile (iOS/Android) and web applications delivered under partner branding
• Ensure high-quality user experience across consumer touchpoints
• Token & rewards infrastructure
• Lead design and integration of tokenised reward systems, including smart contracts and distribution logic
• Manage wallet integrations and fiat on/off-ramps in collaboration with external providers
• Integrations
• Build and maintain APIs connecting to external data feeds, ticketing systems, commerce platforms, and sponsor tools
• Leadership & team
• Hire, mentor, and scale a high-performing engineering team
• Establish engineering standards, documentation practices, and development workflows
• Act as a hands-on technical leader while progressively transitioning to strategic oversight

Qualifications

• 8+ years of experience building consumer-facing technology products
• Proven experience delivering at least one 0-to-1 platform
• Track record of shipping and operating products at scale (100K+ users)
• Strong backend engineering background (distributed systems, real-time data, API design)
• Experience designing production-grade systems with high reliability requirements
• Comfortable working across frontend, backend, and infrastructure layers
• Strong written and verbal communication skills (architecture docs, technical strategy, roadmap planning)

Strongly preferred

• Experience with loyalty, gaming, or marketplace-style mechanics (e.g. rewards, auctions, prediction-style systems)
• Familiarity with blockchain or tokenised systems (smart contracts, wallets, settlement flows)
• Background in security-sensitive or compliance-aware systems
• Experience building white-label or multi-tenant platforms

Technical environment (current / planned)

• Languages: TypeScript/JavaScript, Node.js, Python; Go or Rust exposure is a plus
• Mobile: React Native or Flutter; native iOS (Swift) / Android (Kotlin) experience advantageous
• Infrastructure: Cloud-native (GCP), Docker/Kubernetes, CI/CD pipelines
• Data: PostgreSQL, Redis, event streaming (Kafka or equivalent)
• Web3 exposure: Solidity fundamentals, wallet integrations, token mechanics