Toptal Blog

Thomas is a full-stack developer and technology architect with experience in SaaS, fintech, and enterprise systems. Skilled in JavaScript, Java, Node.js, React, and AWS, he builds scalable web applications, trading engines, and declarative workflow platforms for clients worldwide, combining deep engineering expertise with cross-domain problem-solving.

Shivam is a senior Salesforce consultant and full-stack developer specializing in CRM transformation, data migration, and automation across clouds. Previously part of Salesforce’s internal consulting team, he has extensive experience designing scalable data architectures and integrations using Apex and custom Lightning components. He also works with Agentforce and CRM Analytics to help enterprises accelerate decision-making and drive measurable ROI through stronger customer engagement and retention.

Khalil is a data scientist and marketing analytics expert. He previously managed the analytics infrastructure for AMN Healthcare, the biggest healthcare staffing company in the US, and built and sold the AI analytics startup Spikie. In marketing, he has developed models that enabled companies and agencies to cut hundreds of thousands of dollars of ineffective marketing spend every year.

Teimur is a software engineer with more than 10 years of experience building React applications. He partners with clients to design high-performing, scalable solutions and has held senior roles at a diverse range of companies, including at global fintech organization Klarna and most recently for AI-driven startup Speechify.

Emiliano is a cloud engineer with more than a decade of experience designing and operating AWS-based architectures. He works with organizations on cloud adoption, helping teams create cloud-native systems and transition existing workloads to containerized infrastructure. His work focuses on building reproducible infrastructure, optimizing cloud costs, strengthening security, availability, and performance, and automating software delivery pipelines to support reliable operations.

Alan is a senior front-end developer with more than 15 years of experience building products using React, TypeScript, and GraphQL. He has led SaaS revamps, built dashboards, implemented e-commerce sites from designs, and developed local-first mobile apps using Next.js, React Native, Tailwind CSS, and Prisma. His focus is on creating performant, reliable, and maintainable front-end code.

Adel is a UI/UX designer who helps teams turn complex technology into clear, usable products. He has worked with early-stage startups and partnered with teams at Airbnb, Colgate, Supercell, and a range of emerging AI-focused companies. His work centers on shaping practical, user-centered interfaces.

Tomas is a web developer with extensive experience designing and scaling front-end architectures across React and Angular. He has led framework evaluations, application rewrites, and performance-focused refactors for production systems. Known for his business-focused approach, Tomas prioritizes simplicity, maintainability, and making clear architectural trade-offs.

Laszlo is a solutions architect and senior software engineer with deep expertise in microservices, gRPC, REST, and large-scale distributed systems. He has led high-traffic modernization projects across travel, finance, and lifestyle management, working on systems that handle more than 1 billion requests per day and designing cloud-based solutions on Azure and AWS. He holds a master’s degree in IT from the Budapest University of Technology and Economics.