Enterprise API Implementation Lead

Easyship; Lisboa; Remote; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Generous remuneration and stock units

Gym and wellness reimbursement

Work from Anywhere for 4 weeks a year

Generous vacation policy

Job summary

Easyship is seeking a Technical Implementation Lead to own enterprise API integrations and tailored builds from pre-sale discovery to go-live and handover. You will be the go-to API expert for customers, Sales, and internal teams and will partner with Solutions Developers to deliver one clear solution.

You will sit in the Implementation Services team within Client Services, leading multiple implementations while managing scope, timelines, and dependencies.

Qualifications

• 5+ years in technical implementation, solutions architecture, or similar technical customer-facing role.
• Expert, hands-on with REST APIs, webhooks, integration patterns, incl. OAuth 2.0/SSO/API keys.
• Fluent with JSON, data mapping and SQL; proficient with Postman or Insomnia.
• Structured troubleshooter across HTTP status codes, rate limits, errors, retries, logs.
• Experience with eCommerce platforms, ERPs, and warehouse systems integration with shipping services.
• Ability to write SoWs, manage multiple implementations, and handle scope and pricing boundaries.
• Proficient written and verbal English; able to translate AI-assisted work into plain language.

Responsibilities

• Lead technical discovery with Enterprise/Strategic Sales and map customer systems to validate product fit.
• Own the solution design for each implementation (architecture, endpoints, webhooks, auth, data mapping).
• Scope and sign off SoWs for API, custom app, or customization work; define deliverables, go-live dates, volumes, and support terms.
• Resolve technical questions from customers and internal teams before sale and during implementation; reproduce issues in Postman/Insomnia and find root causes.
• Lead technical kick-offs with customers’ technical teams and senior stakeholders.
• Collaborate with Solutions Developers to align on scope and design, unblock questions, and ensure delivery matches SoW.
• Manage multiple implementations from signature to go-live and volume migration; track milestones, risks, and dependencies.
• Own implementation escalations and recovery plans where volume falls short of forecast.
• Lead structured handovers to CSM and Customer Support; maintain governance on custom builds and costs.
• Translate recurring questions into documentation and feed product gaps to Product & Engineering with business cases.

Skills

Technical implementation

Solutions architecture

Enterprise SaaS

REST APIs

Webhooks

JSON

SQL

Postman

Insomnia

Stakeholder management

Tools

Postman

Insomnia

Job description

Easyship is seeking a Technical Implementation Lead to own enterprise API integrations and tailored builds from pre-sale discovery to go-live and handover. You will be the go-to API expert for customers, Sales, and internal teams and will partner with Solutions Developers to deliver one clear solution.

You will sit in the Implementation Services team within Client Services, leading multiple implementations while managing scope, timelines, and dependencies.