Software Engineer - Integrations (3 positions)

About the role

Rinkit is a UK-based ecommerce business operating across the UK, Europe and Australia on platforms such as Amazon, Shopify and Mirakl marketplaces, running its own internal systems for orders, stock, warehouses, fulfilment, shipping, returns, product information, purchasing and forecasting. It is looking for three software engineers based in Skopje to support a six-month integration project, working directly with its UK engineering team.

Key responsibilities

• Build, improve and maintain integrations between internal systems and external marketplaces, ecommerce platforms and shipping providers.
• Channels: connectors to Amazon, Mirakl marketplaces, Shopify and others, including order, stock, returns and reconciliation flows.
• Listings: map PIM attributes to each channel's catalogue schema, validate before sending and bring channel errors back to fix at source.
• Shipping: courier integrations for tracking, webhooks and dispatch services (DPD, Evri, Amazon Shipping), plus new channels and couriers as they are added.
• Dependability: idempotent event handling, rate limits, retries and failures visible to a person.
• Support live systems: use logs and data to find why an order, listing, stock level or tracking event went wrong and fix the cause.
• Troubleshoot, improve API performance, data synchronisation and the reliability of existing systems.

Required profile

• 3+ years as a professional software engineer with systems you built running in production.
• Solid grasp of software design principles and an understanding of production-critical systems.
• Track record of connecting systems, ideally marketplaces, normalising data and tuning performance within rate limits.
• Experience building with AI coding tools, backed by core engineering skills.
• End-to-end ownership, from a loosely defined problem to production, with comfort with ambiguity and an inquisitive mindset.
• Good written and spoken English.

Required skills

• C# on .NET 10, ASP.NET Core, EF Core, PostgreSQL, Hangfire, React, TypeScript, MUI and AWS.
• Tests in xUnit, Testcontainers and Vitest; channel API clients generated from OpenAPI specs.
• Nice to have: Amazon SP-API, Shopify GraphQL Admin API, Mirakl, courier APIs, PIM systems, JSON Schema validation, AWS background job processing and ecommerce experience.

What we offer

• Six-month project contract with a monthly fee of €1,440–€1,800 depending on experience.
• Hybrid working based in central Skopje.
• Direct collaboration with the UK engineering team.
• Possibility to extend the contract or discuss permanent employment after the project.