**Position:** eCommerce Developer

**Type:** Contractor

**Compensation:** $50 - $120/hour

**Location:** Remote

**Role Responsibilities**

*   Design, develop, and maintain robust eCommerce platforms using Magento, Shopify, and WordPress.
*   Implement and optimize seamless API integrations, including REST APIs and middleware solutions.
*   Collaborate with cross-functional teams to create scalable and high-performance eCommerce applications.
*   Develop and deploy fullstack applications leveraging modern frameworks such as React Native and PHP.
*   Manage cloud infrastructure on AWS, GCP, and Azure to ensure uptime and security for eCommerce services.
*   Work closely with AI engineers to annotate and document processes for training advanced AI models.

**Requirements**

*   Have a minimum of of experience building and maintaining complex eCommerce websites.
*   Demonstrate deep proficiency with Magento, PHP, Shopify, WordPress, and React Native.
*   Possess strong expertise in integrating APIs and working with REST architecture.
*   Have hands-on experience with Salesforce integrations and eCommerce workflows.
*   Have proven knowledge of cloud platforms such as AWS, GCP, and Azure.

**Application Process**

*   Easy Apply on LinkedIn
*   Check email for next steps
*   Participate in resume evaluation & interview stage

Backend Developer (ecommerce) | Remote

**About Etera** Etera is building the first AI-native corporate travel platform for the GCC market — designed from the ground up for how businesses in the region actually operate. We're a lean, high-conviction team replacing legacy TMCs with autonomous agents, real-time inventory, and a product experience that doesn't feel like it was designed in 2009. **The Role** We're looking for a Senior AI Fullstack Engineer who can own the full stack — from a smooth React Native mobile experience to TypeScript backend services and the AI/LLM layer that powers our multi-agent infrastructure (OPUS Prime). If you think in systems, ship fast, and find it natural to reason about both user-facing product and underlying model behavior, this role was built for you. **What You'll Own**

*   Mobile-first product: Build and maintain Etera's React Native app (Expo/TypeScript) — booking flows, real-time updates, multilingual UX (Arabic/English)
*   Backend services: Design and extend our TypeScript backend, including booking APIs, supplier integrations (PKfare, RateHawk, Hotelbeds), and webhook orchestration
*   LLM integration: Work directly with Claude (Anthropic API) and our multi-agent OPUS Prime system — building, tuning, and extending AI pipelines for travel intent detection, QA, and automated engineering reports
*   End-to-end delivery: Take features from spec to production. Own the full lifecycle — architecture, implementation, testing, deployment
*   Infra & reliability: Firebase Auth (OTP, Apple, Google), EAS Build/TestFlight pipelines, and CI/CD hygiene across the stack
*   Code quality: Participate in security audits and peer review within a small, high-trust engineering team

**Tech Stack** Frontend / Mobile: React Native + Expo, TypeScript, Firebase Auth (OTP, Apple, Google), EAS Build / TestFlight, Native iOS/Android context. Backend / AI: TypeScript (end-to-end), Anthropic API / Claude, Mastra (agent orchestration framework), LangChain (chains, tools, memory), Zeabur / cloud deployment, REST + Webhook integrations. **You've Built and Run Agent Teams. Plural.** This is not a role for someone who has experimented with LLMs on side projects. We're looking for engineers who have designed, shipped, and actively maintained multi-agent systems — and who understand what it takes to keep them reliable in production.

*   Proven agent team ownership: You have built one or more autonomous agent teams from scratch — defined their scope, wired their tools, managed inter-agent communication, and own their continued operation
*   Self-validating mindset: You don't hand off agent output blindly. You act as the primary validation layer for the systems you build — designing evaluation criteria, catching failure modes, and iterating on agent behavior based on real output quality
*   Cross-domain fluency: Your agents have touched multiple domains — not just one narrow use case. You can reason about agent behavior across booking logic, data quality, QA pipelines, code review, or content generation without needing a specialist in each area
*   Maintenance discipline: You have a track record of keeping agent systems healthy over time — prompt drift, tool failures, context window management, regression testing. Not just shipping and moving on
*   Full-stack integration: You connect agent teams to real product surfaces — not just notebooks or internal tools. Your work shows up in APIs, mobile interfaces, or backend workflows that real users depend on

**Requirements**

*   5+ years of professional fullstack engineering, with meaningful production work in mobile
*   Strong React Native track record — shipped apps, managed build pipelines, handled auth flows
*   TypeScript across the entire stack — mobile, backend, and agent tooling. This is non-negotiable
*   Hands-on with LLM APIs (Anthropic, OpenAI, or equivalent) — prompt engineering, tool/function calling, multi-turn context management
*   AI-augmented development: You use Claude Code, Codex, and similar agentic coding tools to achieve 10x engineering throughput. You know how to create, configure, and orchestrate coding agents — not just prompt them — and you treat them as force multipliers across your daily workflow
*   Mastra: Production experience with Mastra as an agent orchestration framework — workflows, tool definitions, agent memory, and inter-agent coordination patterns
*   LangChain: Solid working knowledge — chains, retrieval, tool use, memory backends, and integration into live backend services. Not just tutorials
*   Ability to operate as a full engineering team member — not a specialist silo. You ship frontend, backend, and AI layers as needed, and you hold the full picture in your head simultaneously
*   Comfort in a lean startup environment: fast cycles, high ownership, minimal process overhead
*   Strong written English. Arabic or German is a genuine plus given our markets

**Bonus Points**

*   Prior work with GDS/NDC/travel supplier APIs (Amadeus, Sabre, PKfare, RateHawk)
*   Experience building multi-agent AI systems or autonomous workflow orchestration
*   Experience with Voice AI agents (Ultravox, Vapi, ElevenLabs, or equivalent) — building or integrating automated voice calling systems
*   Familiarity with DIFC / UAE regulatory context for SaaS or fintech products
*   Background in security auditing or static code analysis tooling

**Benefits**

*   Greenfield Ownership — You won't inherit a decade of technical debt. You'll shape the architecture from the ground up
*   Real AI Work — Not AI as a buzzword. Actual multi-agent systems in production, with full access to our OPUS Prime infrastructure
*   Remote-First — Work from anywhere. Async-friendly culture with a team distributed across Europe and the Gulf
*   Equity + Competitive Package — Meaningful equity stake. Competitive cash compensation. Built for the long term
*   High-Impact Market — GCC corporate travel is a $20B+ market with legacy infrastructure. You'll be building the replacement
*   Fast Cycles — No committee approvals. Ship, learn, iterate. If it breaks, fix it and ship again — better

Senior AI Fullstack Engineer

ecommerce Platform Developer | Remote

**Job Title:** eCommerce Developer - Magento, Shopify, WooCommerce (WordPress **Job Type:** Contractor **Location:** Remote **Job Summary** Join our customers team as a skilled eCommerce Developer, where you will play a pivotal role in architecting and developing innovative, complex eCommerce solutions. As part of an AI Agent project, your expertise will directly contribute to training next-generation AI models and powering state-of-the-art commerce experiences. **Key Responsibilities**

*   Design, develop, and maintain robust eCommerce platforms using Magento, Shopify, WooCommerce (WordPress) or any complex eCommerce build.
*   Implement and optimize seamless API integrations, including REST APIs, middleware solutions, and third-party service connectors.
*   Collaborate with cross-functional teams to create scalable, secure, and high-performance eCommerce applications.
*   Develop and deploy fullstack applications leveraging modern frameworks such as React Native and backend technologies like PHP.
*   Manage cloud infrastructure on AWS, GCP, and Azure to ensure uptime, scalability, and security for all eCommerce services.
*   Work closely with AI engineers to annotate, document, and leverage your development expertise in training advanced AI models.
*   Demonstrate exceptional written and verbal communication while documenting processes and collaborating with stakeholders.

**Required Skills And Qualifications**

*   Minimum 3 years of experience building and maintaining complex eCommerce websites and solutions.
*   Deep proficiency with Magento, PHP, Shopify, WordPress, and React Native.
*   Strong expertise in integrating APIs, middleware, and working with REST architecture.
*   Hands-on experience with Salesforce integrations and eCommerce workflows.
*   Proven knowledge of cloud platforms: AWS, GCP, and Azure.
*   Exceptional written and verbal communication skills, with the ability to explain technical concepts to diverse audiences.
*   Strong problem-solving skills, attention to detail, and a passion for delivering high-quality solutions.

**Preferred Qualifications**

*   Experience working on AI-driven or AI-assisted eCommerce projects.
*   Background in training, supporting, or collaborating with AI/data teams.
*   Demonstrated ability to work on high-stakes, complex builds in a distributed, remote environment.

PHP eCommerce Developer - Remote

eCommerce Developer | Remote

Magento eCommerce Developer - Remote

**Mid Level JavaScript Developer | £40,000 - £45,000** We're working with an innovative iGaming powerhouse on this exciting opportunity to build the next generation of web and mobile games. If you are passionate about high-performance JavaScript and want to see your code come to life in a fast-paced, creative environment using Pixi.js and modern ES6+, this is the role for you. Join a collaborative team where you will bridge the gap between technical logic and visual excellence, working alongside world-class artists and designers to deliver seamless gaming experiences to a global audience. This is a fully remote role offering the chance to level up your skills in technical troubleshooting, unit testing, and agile game development. **The Role**

*   Develop and maintain highly interactive mobile and web-based games using JavaScript and Pixi.js.
*   Collaborate directly with designers and project managers to optimize game performance and user engagement.
*   Write clean, maintainable code following ES6+ standards including Classes, Promises, and modern design patterns.
*   Support the implementation of robust Unit Tests and automated testing to ensure a bug-free gaming experience.
*   Contribute to the full software development lifecycle within an Agile framework, from initial briefing to final deployment.

**What You'll Need**

*   Commercial experience with JavaScript (ES6+), HTML5, CSS3, and JSON handling.
*   Hands-on experience with game engines or rendering libraries such as Pixi.js, Phaser, or Three.js.
*   Proficiency with Git version control and a solid understanding of front-end architecture.
*   A problem-solving mindset with the ability to debug complex technical issues and participate in code reviews.
*   Bonus points for experience with Node.js, automated testing frameworks, or a degree in Computer Science.

**What's On Offer**

*   100% remote working flexibility with a supportive, digital-first culture.
*   Strong focus on work-life balance with 25 days holiday, bank holidays, and your birthday off.
*   Comprehensive financial security including a Standard Life pension, life cover (2x salary), and access to employee share schemes.
*   Holistic wellbeing package featuring healthcare savings, support services, and extensive retail/travel discounts.

**Apply via Haystack today!**

JavaScript Developer

**Senior Support Engineer | £50,000 - £60,000** We're working with a design-led healthtech pioneer described as the "Apple of practice management" on this exciting opportunity. We are looking for a technical generalist who thrives at the intersection of engineering and customer success, using a modern Ruby on Rails and React stack to solve real-world problems for thousands of doctors. If you are a Developer who loves the "detective work" of debugging and wants to see your code fixes deployed to production daily to help patients and providers, this remote-first role offers massive autonomy and impact. **The Role**

*   Investigate and resolve complex technical bugs raised by the support team using Ruby on Rails 7 and PostgreSQL.
*   Ship small-to-medium product enhancements and logic tweaks directly to the production environment.
*   Write and execute Ruby scripts and background jobs for critical post-migration data cleanup and updates.
*   Collaborate directly with Full Stack Engineers and Support Specialists to triage and prioritize the product roadmap.
*   Act as a technical bridge, translating complex engineering issues into friendly, fluent communication for non-technical users.

**What You'll Need**

*   Strong commercial experience with Ruby on Rails (specifically Rails 7 and Ruby 3.4).
*   Proficiency in modern frontend technologies including React, TypeScript, and JavaScript.
*   Hands-on experience with PostgreSQL and writing performant database queries.
*   Professional comfort in a Linux-based cloud environment, specifically using AWS ECS and the command line.
*   Proven debugging and troubleshooting skills—you enjoy digging into the root cause of an issue rather than just applying a band-aid.

**What's On Offer**

*   Fully remote working model with a "calm" company culture that respects deep work and autonomy.
*   Beautiful London riverside office available for those who prefer in-person collaboration or hybrid flexibility.
*   The opportunity to work on a profitable, bootstrapped product that facilitates healthcare for hundreds of thousands of patients.
*   Competitive salary and a direct seat at the table in a small, high-performing engineering team of six.

**Apply via Haystack today!**

Senior Support Engineer

**Position:** Software Engineer **Type:** Contractor **Compensation:** $50 - $120/hour **Location:** Remote **Role Responsibilities**

*   Design and develop scalable backend and frontend features using Python, Node.js, React, and GoLang.
*   Architect, deploy, and maintain cloud infrastructure on AWS to support high-performance AI agent applications.
*   Collaborate closely with cross-functional stakeholders to deliver robust, production-ready software solutions.
*   Integrate and optimize workflows for large language models (LLMs) as part of advanced AI agent training initiatives.
*   Conduct comprehensive code reviews and provide mentorship to team members for continuous improvement.
*   Troubleshoot and resolve complex technical challenges efficiently in a distributed environment.

**Requirements**

*   Have strong relevant experience in Python, Node.js, React, GoLang, and working with large language models (LLMs).
*   Have a proven track record deploying and managing applications on AWS cloud infrastructure.
*   Demonstrate exceptional written and verbal communication skills, showcasing clarity and attention to detail.
*   Have a demonstrated success in delivering scalable, maintainable software in collaborative, remote teams.
*   Possess a strong grasp of software design principles, version control (e.g., Git), and modern development methodologies.

**Application Process**

*   Easy Apply on LinkedIn
*   Check email for next steps
*   Participate in resume evaluation & interview stage

Full Stack Software Engineer | Remote

**JavaScript Developer, React focused, Product Engineer (Contract) | React, TypeScript, Node.js, AWS | Product-Led Delivery | £400-450/day | Outside IR35 | Fully Remote (UK) | 6-Month Contract**

We’re hiring multiple Senior Product Engineers (contractors) with strong frontend or full-stack capabilities to join a large-scale public sector transformation programme.

This role focuses on building modern, user-centric digital products as part of cross-functional teams spanning product, design, and engineering.

You’ll be working on high-impact platforms, delivering intuitive, scalable web applications used by a wide range of users.

This is a 6-month initial contract, ideal for engineers who combine strong frontend expertise with product thinking and a pragmatic approach to delivery.

**The Role | JavaScript Developer, React focused, Product Engineer (Contract) | React, TypeScript, Node.js, AWS | Product-Led Delivery | £400-450/day | Outside IR35 | Fully Remote (UK) | 6-Month Contract**

This is a hands-on product engineering role with a strong focus on frontend development and user experience.

You’ll be expected to:

*   Build modern web applications using React and TypeScript
*   Contribute across the stack where needed (Node.js backend services)
*   Work closely with product managers and designers to deliver user-focused features
*   Translate user needs into intuitive, high-quality UI experiences
*   Apply modern engineering practices including TDD, CI/CD, and component-driven development
*   Collaborate in cross-functional teams with a strong product mindset
*   Continuously improve code quality, performance, and usability
*   Contribute to design systems and scalable frontend architecture

This role suits engineers who are product-minded, collaborative, and care deeply about building high-quality user experiences.

**Technical Requirements | JavaScript Developer, React focused, Product Engineer (Contract) | React, TypeScript, Node.js, AWS | Product-Led Delivery | £400-450/day | Outside IR35 | Fully Remote (UK) | 6-Month Contract**

Strong, recent experience with:

*   React and modern frontend development (hooks, state management, component architecture)
*   TypeScript in production environments
*   Building scalable, maintainable frontend applications
*   Integrating with APIs and backend services
*   Node.js for backend or full-stack development (desirable)
*   Modern testing practices (unit, integration, end-to-end)
*   CI/CD pipelines and modern development workflows
*   Working in cross-functional, product-led teams

**Nice to Have**

*   Experience with design systems and component libraries
*   Exposure to accessibility (a11y) best practices
*   Experience working in public sector or regulated environments
*   Familiarity with cloud environments (AWS)

**Why This Contract Stands Out | JavaScript Developer, React focused, Product Engineer (Contract) | React, TypeScript, Node.js, AWS | Product-Led Delivery | £400-450/day | Outside IR35 | Fully Remote (UK) | 6-Month Contract**

*   £400-450 per day
*   Outside IR35
*   Fully remote within the UK
*   Long-term, stable programme of work
*   Opportunity to build meaningful, user-facing digital products
*   Strong product, design, and engineering collaboration
*   Modern engineering culture focused on quality and delivery

**This is not a pixel-perfect greenfield rebuild - it’s a real-world product engineering role where you’ll ship features that directly impact users, working within complex systems and delivering tangible outcomes.**

JavaScript Developer, React focused, Product Engineer (Contract) | React, TypeScript, Node.js, AWS | Product-Led Delivery | £400-450/day | Outside IR35 | Fully Remote (UK) | 6-Month Contract

React Native / Expo · Full-time · Remote (Can be in any country)

**About the role**

We’re a small team building a B2B SaaS product our customers rely on every day.

You’ll own the mobile app end-to-end, from early ideas through to what ships in production.

Most of your time will be spent building in React Native and Expo.

There’s no dedicated product or design layer. You’ll be involved in shaping what we build, how it

works, and how it feels to use.

We move fast, keep the team small, and expect people to take real ownership.

**What you’ll doOwn the mobile app**

● Lead development of our React Native and Expo app on iOS and Android

● Make decisions on architecture, structure, and tooling

● Ship features end-to-end and keep the app fast and reliable

**Shape what we build**

● Get involved early when we’re figuring out what to build

● Turn rough ideas into simple, usable product decisions

● Think through flows, edge cases, and the details that make the product feel solid

**Work across the stack when needed**

● Work comfortably in our monorepo across mobile, backend, and web

● Jump into backend or web code when it helps move things forward

● Build and maintain integrations across systems, especially around our Convex backend

**What we’re looking for**

● 5–8+ years of experience building software

● Strong experience shipping React Native or Expo apps to production

● Deep familiarity with the Expo ecosystem, including EAS, OTA updates, routing, and

native modules

● Solid TypeScript skills

● Comfortable working in a full-stack TypeScript codebase

● Experience building products used by customers day-to-day

**Nice to have:**

● Experience with Convex or similar realtime or event-driven systems

● Experience working on small, fast-moving teams

**How we work**

● You take ownership of problems end-to-end

● You’re comfortable making decisions without perfect information

● You know when to ask for input and when to move quickly

● You think about how the product works and feels in practice

● You write code you’d be comfortable maintaining long term

**Stack**

● React Native and Expo

● Convex

● React

● TypeScript

**What we offer**

● Competitive salary (125k-150k)

● Fully remote

● Small team with high ownership

● Direct impact on the product from day one

Backend Developer (ecommerce) | Remote

Job Description

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