Walter

Role Description We're looking for an experienced AI/Python Engineer to design, build, and optimize intelligent systems using Python and Azure — from prototyping new ideas to maintaining production-grade pipelines. - Design and implement Python and Azure-based solutions for complex business problems - Build and maintain RAG pipelines, multi-agent systems, and LLM-powered workflows - Optimize existing systems for performance and scalability - Ensure compliance with data privacy regulations Qualifications - Strong Python skills + data science libraries (NumPy, Pandas, Scikit-learn) - Solid Azure services and cloud architecture experience - Hands-on experience with LangChain, LangGraph, RAG pipelines, and multi-agent orchestration - Familiarity with MCP (Model Context Protocol) Requirements - Nice to Have: AWS Bedrock - TensorFlow / PyTorch - NLP - Computer Vision Benefits - High-impact global projects at enterprise scale - Collaborate with top-tier engineers via the Toptal network

Role Description Our client is seeking two highly skilled Front-end Engineers to join their teams and work on multiple planned projects. - Develop and enhance front-end components using React or Angular. - Collaborate with UX/UI designers to translate wireframes and design concepts into interactive, pixel-perfect user interfaces. - Ensure cross-browser compatibility and responsive design across devices. - Optimize front-end performance for maximum speed and scalability. Qualifications - Expert-level proficiency in front-end/UI development building modern web applications using React or Angular. - Strong understanding of HTML5, CSS3, JavaScript (ES6+), and responsive design principles. - Experience with CSS preprocessors (e.g., SASS, LESS) and build tools (Webpack, Vite, etc.). - Understanding of accessibility standards (WCAG) and front-end testing practices (Jest, React Testing Library, Cypress). - Familiarity with design systems and component libraries (e.g., Material-UI, Ant Design). Requirements - Open to full-time candidates with excellent communication skills. - Ability to provide extensive overlap with Saudi Arabia (GMT+3). Benefits - Expected to be a long-term engagement with multiple projects.

Role Description A leading collaborative design platform is seeking an experienced backend-focused engineer to enhance and evolve an integration-driven application. The project is centered on building and maintaining robust integrations using Ruby on Rails and TypeScript, with a strong emphasis on designing, implementing, and scaling connections with third-party systems. The role will contribute to improving reliability, extensibility, and overall integration architecture across the platform. Qualifications - Strong experience with Ruby on Rails in production environments. - Experience with TypeScript. - Proven background building and maintaining integrations with third-party APIs. - Solid understanding of RESTful APIs, webhooks, and asynchronous workflows. - Experience working in collaborative, cross-functional engineering teams. - Experience integrating identity services, especially using OAuth. Requirements - Design, develop, and maintain backend services using Ruby on Rails to support integrations. - Build and extend integration logic using TypeScript, ensuring reliability and scalability. - Integrate the platform with third-party APIs and external systems. - Collaborate with internal teams to define integration requirements and technical solutions. - Improve existing integration architecture with a focus on maintainability, performance, and observability. - Document integration flows and provide technical recommendations for future improvements. Benefits - Opportunity to work on high-impact integrations used by thousands of end users. - Collaborative environment with experienced engineers. - Potential for long-term collaboration based on performance and project outcomes.

Role Description You'll be joining a major build for one of our clients, a leading platform in the creator economy. They're rolling out a native Community feature that gives their users' most engaged audiences a place to gather, talk, and come back between sends, unlocking a premium upsell and stronger retention for the platform. The project is mid-development by the time you start, with a beta window and a release event planned for later this year. You'll be embedded into a small, focused team and shipping production code from day one. We're looking for a senior full-stack engineer comfortable working primarily in Ruby on Rails and React, who can drop into an existing codebase, ramp up quickly, and start delivering meaningful tickets within the first few weeks. You'll work alongside our existing engineering leads on this engagement, share planning and working sessions with the broader client team, and contribute directly to features being shipped to end users. The stack is Ruby on Rails with Postgres and Redis (Docker for local dev), a React frontend, with real-time and feed infrastructure powered by Stream.io. We use GitHub for code management and Linear for ticketing. This role is hands-on. There's no Rare Days PM on this engagement (the client owns PM), so we're looking for someone who is self-directed, communicates clearly, and can operate effectively inside a client's processes and rituals. Responsibilities - Build and ship full-stack features across the Rails service layer and the React frontend on the client's community platform. - Pick up tickets from the Linear board, scope your own work, and deliver production-quality code with strong test coverage. - Participate in the client's sprint rituals, demos, and touchpoints, speaking confidently about technical decisions, trade-offs, and delivery status. - Collaborate closely with the existing engineers on the project (your primary pair during ramp-up) and with the client's internal engineers and PM. - Help drive the team toward upcoming beta and release milestones, flagging risks early and proposing solutions, not just problems. - Contribute to architecture and integration discussions where relevant (e.g. real-time infrastructure, feed/messaging via Stream, performance and scaling questions). - Write code reviews that raise the bar without slowing the team down. Qualifications - 7+ years of full-stack engineering experience, with substantial production work in Ruby on Rails and React. - Comfortable in a Rails monolith of meaningful size. You can navigate an unfamiliar codebase, find the patterns, and make changes that match the existing conventions rather than fighting them. - Strong with Postgres (writing efficient queries, understanding indexing, reasoning about migrations on a live database) and familiar with Redis in a caching or background-job context. - Experience working with React in a production app (component patterns, state management, integrating with a Rails backend). - You've worked on apps where real-time features, multi-tenancy, or scale are real concerns, and you have opinions about the trade-offs (familiarity with ActionCable/AnyCable, Stream.io, Pusher, or similar is a plus). - You can communicate effectively with both technical and non-technical audiences, and you're comfortable presenting your work directly to a client team. - You're self-directed: you can pick up a ticket, ask the right clarifying questions, and ship it without needing constant check-ins. - You're motivated by feedback and care about the craft. You'd rather raise a concern early than ship something you're not proud of. - Available to work in an EST or compatible timezone (Eastern North America through Western/Central Europe), with strong overlap to an EST/CET working day for sprint rituals, pairing, and client touchpoints. - Comfortable working as a contractor. Nice to have - Prior experience on creator-economy, publishing, or community products. - Background working as an embedded contractor inside a client's engineering team. - Familiarity with deploying Rails applications at scale (Heroku, AWS, or similar). - Experience integrating with third-party real-time / feed / chat services. Engagement details - Type: Temporary contract, full-time allocation. - Location: Remote, EST or compatible timezone (Eastern North America through Western/Central Europe).

Role Description We are hiring an Engineering Lead with deep backend expertise and strong fluency across modern web stacks. This role is ideal for someone who thrives on technical challenges, loves building scalable systems, and enjoys collaborating with product, design, and client teams. You'll work both independently and with small teams, depending on the project, write production code, and play a key role in steering technical direction. Core Responsibilities - Technical Leadership & Development - Design and build AI-powered tools and automations that streamline internal business processes (HR, Finance, etc.), working directly with stakeholders to identify opportunities. - Evaluate where LLM orchestration, chat interfaces, or multimodal AI genuinely adds value versus where standard software engineering is the right answer. - Design async processing pipelines, batch workflows, and decoupled service architectures suited to internal tooling at scale. - Oversee day-to-day engineering work, keeping the team unblocked and aligned on priorities. - Architect scalable backend systems using languages and frameworks such as Python and Java. Experience with Kotlin is a plus. - Contribute to frontend work using React and TypeScript as needed. - Drive decision-making around performance, scalability, and system design. - Write clean, maintainable code and ensure engineering best practices are followed. - Lead technical documentation, sprint planning, and ongoing delivery. - Collaboration & Client Engagement - Partner with product managers and designers to define and scope solutions. - Lead client-facing conversations around technical strategy and progress. - Present work during demos, milestone check-ins, and roadmap reviews. - Balance business needs with technical feasibility in collaborative planning sessions. - Team Mentorship & Culture - Provide regular feedback and guidance to engineers. - Contribute to hiring, onboarding, and leveling processes. - Help foster a strong, inclusive engineering culture rooted in transparency and accountability. - Identify opportunities to improve our tools, processes, and technical standards. Qualifications - 7+ years of professional engineering experience. - English proficiency. - Familiarity with AI/LLM integration patterns: orchestration frameworks, MCP, output quality management, and prompt engineering. - Ability to take a vague brief, ask the right clarifying questions, form a plan, and deliver a working system without heavy supervision. - Experience building real systems end-to-end and can point to specific examples. Past experience with internal tools or automation platforms is a strong plus. - Experience with access control design (RBAC, zero trust principles), data sensitivity considerations, and API gateway patterns. - Experience with Python and Java, including system architecture and performance optimization. Kotlin experience is a plus. - Strong knowledge of React, NextJS, and TypeScript. - Backend experience with APIs, databases (SQL/NoSQL), cloud services (AWS, GCP), and distributed systems. - Experience with service-oriented architecture, API gateway patterns, and inter-service communication (GraphQL, gRPC, or similar). - Effective communication with both technical and non-technical audiences and comfortable leading presentations and deep-dive technical discussions. - Understanding of how to compromise on business trade-offs and technical decisions. - Ability to design and communicate robust, scalable technical solutions that internal and client teams understand and want to work on. - Comfortable dealing with uncertainty and capable of disambiguating complex scope and domains to your team. - Care about people and motivated to help team members achieve success on projects. Bonus Skills - Experience with LLM orchestration, agent frameworks, or building AI-augmented internal tools. - Opinions (even contrarian ones) on the current AI tooling landscape. - Experience building creator platforms, media tools, or community-driven products. - Interest in developer experience, automation, or DevOps tooling. Benefits - Flexible working hours and a remote-friendly culture. - Flexible time-off allowance for vacation, sick days, and personal time as needed.

Join Toptal's Elite Network of Freelance Talent Toptal is an exclusive network of the world's top freelance software developers, designers, finance experts, product managers, and project managers. As one of the fastest-growing fully remote networks globally, we empower professionals to thrive in their freelance careers while working with leading companies around the world. About the Client Our client is one of the world's most recognized food and beverage producers, known for its iconic global brands and commitment to quality. Role: Senior Java Developer (Microservices) We are seeking a highly skilled Senior Java Developer with proven expertise in Microservices to join a dynamic team supporting multiple development initiatives and projects. Responsibilities - Design, develop, and maintain microservices-based applications - Collaborate with cross-functional teams to support multiple projects - Implement event-driven architectures and work with modern cloud technologies - Contribute to architecture and code reviews, and provide technical guidance as needed Additional Details - Location: India - Type: Full-time contract - Duration: 9–12 months - Remote: Yes (fully remote) - Authorization: Applicants must be authorized to work in their country of residence without employer sponsorship

Supply Chain Manager (LATAM) About the Role We are partnering with a fast-growing company that is looking to bring a Supply Chain Manager to own and optimize the end-to-end supply chain across multiple eCommerce channels. This role is critical in ensuring product availability, cost efficiency, and smooth operations from factory to final delivery. You’ll work closely with suppliers, freight partners, and internal teams to build a reliable, scalable supply chain that supports growth across platforms like Amazon, TikTok Shop, Walmart, and 3PLs. What You’ll Do Supplier & Production Management - Manage relationships with suppliers and factories for finished goods, packaging, and raw materials - Place and manage purchase orders to ensure optimal inventory levels across all channels - Negotiate pricing, terms, and lead times to improve cost of goods and cash flow Inventory & Fulfillment - Oversee inventory planning across Amazon FBA, TikTok Shop (FBT), Walmart WFS, and 3PLs - Prevent stockouts and overstock through effective forecasting and replenishment - Support SKU launches, packaging updates, and product transitions Logistics & Operations - Manage freight partners to ensure timely delivery from factories to warehouses - Monitor and resolve shipping delays, inventory discrepancies, and fulfillment issues - Ensure smooth coordination across international shipping, customs, and inspections Cost Optimization & Performance - Optimize supply chain efficiency across shipping, warehousing, and fulfillment costs - Track and improve margins through better operational decisions - Build processes and systems that scale with business growth

Role Description We’re looking for a hands-on GTM + GA4 expert to audit, fix, and fully own our tracking setup across a custom-built platform. You’ll be working directly with a custom-coded environment and expected to bring precision, clarity, and clean data. If you love making messy tracking setups bulletproof, you’ll enjoy this. - Audit our current tracking setup and identify gaps across the full funnel - Configure end-to-end tracking from landing page → key conversions - Set up and validate two core conversion events for purchases - Implement everything via Google Tag Manager (client-side only) - Capture and pass user data securely for Enhanced Conversions - Ensure clean data flow between GTM, GA4, and Google Ads - QA everything so we can trust the data fully Qualifications - Proven experience implementing GTM + GA4 on custom-built websites - Strong understanding of the dataLayer and event architecture - Hands-on experience with Enhanced Conversions - Experience debugging and validating tracking across tools - Ability to work independently and communicate clearly on what’s broken and how you fixed it Requirements - Experience working with marketplaces or two-sided platforms (Nice to Have) - Familiarity with subscription funnels and payment tracking (Nice to Have) - Experience improving attribution accuracy for paid ads (Nice to Have) Benefits - Hourly contract - Flexible hours, async-friendly - Potential for ongoing work if it’s a great fit