SlipstreamJobs tracks this role from the company's public career site. Apply directly on the employer's site.
Easyship is a leading multi-carrier shipping software platform serving over 100,000 brands globally, providing access to 550+ courier services across 200+ destinations. The company is growing rapidly with offices in London, New York, Hong Kong, and beyond.
You will join the Implementation Services team within Client Services as a Solutions Developer, serving as the technical builder, advisor, and architect for enterprise customer integrations. This is a hands-on technical role working closely with the Technical Implementation Lead to design, build, test, and support complex integrations via APIs, custom apps, and tailored builds.
Key responsibilities include:
- Designing technical architecture for implementations: data flows, endpoints, webhooks, authentication, and data mapping
- Advising on Statements of Work, estimating build effort, and assessing change requests to ensure realistic scope and timelines
- Building solutions or guiding customer developers through their own implementations
- Reproducing and resolving complex technical issues using Postman or Insomnia, analyzing requests, responses, and logs
- Supporting testing, user acceptance, go-live, and volume migration phases
- Producing clear technical documentation for handover to Customer Success and Support teams
- Providing ongoing support for custom builds within agreed terms
- Designing reusable, productized solutions that could serve multiple customers and collaborating with Product and Engineering to integrate them into the core platform
- Supporting API requirements for strategic partners, including routing, rate changes, labels, customs data, and bug fixes
- Maintaining developer tools, staging environments, and documentation; assisting with new API development and testing
- Building reusable components, code samples, and integration guides to accelerate future implementations
Requirements:
- 5+ years in software development, integration engineering, or solutions engineering, including customer-facing integrations
- Expert, hands-on command of REST APIs, webhooks, and integration patterns, including authentication methods (OAuth 2.0, SSO, API keys)
- Production-quality code writing in Python or JavaScript
- Experience designing integration architecture handling error handling, retries, rate limits, and idempotency
- Fluency with JSON, data mapping, and SQL; confident using Postman or Insomnia
- Sound engineering practices: Git, automated testing, code review, secure credential handling
- Understanding of how eCommerce platforms, ERPs, and warehouse systems integrate with shipping services
- Confidence working with customer developer teams and explaining technical trade-offs to technical and non-technical stakeholders
- Accurate estimation, ability to deliver multiple builds simultaneously, and proactive change request management
- Effective use of AI: reviewing agent-generated work and translating it into plain language
- Bonus: logistics or eCommerce experience; building reusable integrations within product engineering teams; Shopify, Squarespace, Celigo, or Zapier implementations; prior Easyship experience
