Solutions Architect at OneDayOnly

About You

• You're a hands-on architect who loves owning the big picture while staying grounded in the details. You thrive in fast-paced e-commerce environments, hold your own across engineering, product, data and ops teams, and you know that great architecture is only great if it actually ships.
• You understand that in a platform where deals last 24 hours, performance and reliability aren't nice-to-haves – they're the product. If you've worked in environments with complex third-party integrations you'll feel right at home here.

Responsibilities

Architecture Ownership

• Own the end-to-end architecture of the OneDayOnly platform – from customer-facing web and mobile experiences to backend services, data pipelines and operational tooling.
• Define and drive architectural standards, patterns and best practices across all engineering teams.
• Lead architectural reviews and provide technical governance across new initiatives and major changes to existing systems.
• Identify and proactively address technical debt, single points of failure and scalability constraints before they become production problems.

Cross-Team Collaboration

• Work closely with product, engineering, data, DevOps and commercial operations teams to translate business requirements into sound technical designs.
• Act as the connective tissue between teams – ensuring that the work of frontend, backend, mobile and data engineers fits together coherently.
• Be a trusted advisor to non-technical stakeholders, translating complex architectural decisions into clear business impact.

Integrations & Third-Party Systems

• Design and govern integration architecture across the OneDayOnly ecosystem, including payment gateways, courier and logistics partners, warehouse management systems, and supplier/vendor feeds.
• Ensure integrations are robust, observable, fault-tolerant and built for the realities of high-volume flash-sale traffic spikes.
• Evaluate and onboard third-party platforms and APIs in a way that maintains system integrity and minimises coupling.

Cloud & Infrastructure

• Design and oversee cloud infrastructure across Azure and Google Cloud Platform, optimising for performance, reliability and cost-efficiency.
• Champion DevOps best practices including CI/CD pipelines, infrastructure-as-code, containerisation and observability.

Leadership & Standards

• Create clear, actionable technical documentation, architecture diagrams and architectural decision records (ADRs).
• Mentor engineers and technical leads across teams, raising the overall engineering bar.
• Evaluate and recommend new tools, frameworks and technologies that align with business goals and the existing platform direction.

Experience and Qualifications

• 5+ years of experience in a solutions architect, principal engineer or equivalent technical leadership role.
• Relevant cloud certifications (Azure Solutions Architect Expert, GCP Professional Cloud Architect) are advantageous.
• A degree in Computer Science, Software Engineering or a related field, or equivalent practical experience.
• Proven experience designing and delivering production systems on Azure and/or Google Cloud Platform.
• Strong grasp of distributed systems, API design, event-driven architecture and microservices patterns.
• Hands-on experience with complex third-party integration landscapes – ideally including payment gateways, logistics/courier APIs, or warehouse/fulfilment systems.
• Solid DevOps fundamentals: CI/CD, containerisation (Docker/Kubernetes), infrastructure-as-code.
• Familiarity with PHP-based backends and modern JavaScript frameworks (React, Next.js, React Native/Expo) – enough to review code, guide teams and make informed architectural decisions.
• Experience in e-commerce, marketplace or high-volume transactional platforms is a significant advantage.
• Excellent communication skills: able to write clearly, run productive technical discussions, and present confidently to non-technical stakeholders.