We told Lemon.io exactly what we needed, down to the time zone and the kind of personality that would fit our team, and they found that person. He onboarded, reviewed the codebase, and worked on closing tickets within two weeks of starting with us.
- Senior developer hired
- 1 (+1 added recently)
- Months of dev involvement
- 3+
- API product launched
- 1
A new surcharging product designed for compliance
Yeeld provides surcharging infrastructure and expert payments advisory, helping merchants and platforms of all shapes and sizes, from e-commerce to travel management to rental companies to nonprofit platforms, design and implement complex payment systems.
Founded by a team of ex-Stripe employees, Yeeld pairs deep hands-on payments implementation experience with products that make sophisticated payment strategies accessible to any business.
Turning payments expertise into a product
Across hundreds of client engagements, Yeeld’s founders kept seeing the same problem: merchants were absorbing credit card processing costs or raising prices for everyone to cover them.
Surcharging, adding a small fee when a customer chooses to pay by credit card, lets merchants recover those costs instead. But doing it correctly is hard.
Fees have to be applied based on the customer’s card, their location, and the merchant’s location, while staying within the card network and U.S state and Canadian provincial rules, which change constantly.
That complexity is exactly where Yeeld operates best, and the team set out to build it into a product: a Surcharging API that handles the logic and the compliance automatically.
Yeeld had a senior engineer on staff to lead the build. But as Mira Boora, Co-founder & COO at Yeeld, noted, what the roadmap really demanded was a second senior engineer—someone who could work in parallel and keep the Surcharging API moving from design to launch, without the overhead of a full-time hire the product didn’t yet need.
Why Lemon? Vetting that holds up to a technical bar
Yeeld had known Lemon.io for years.
The two companies first connected when Yeeld explored outside development support for client work, and Lemon’s responsiveness left a lasting impression. When the surcharging build created a real need for senior project-based engineering, Lemon.io was the first call.
Yeeld’s team came out of Stripe and has implemented hundreds of payment systems, so their standard for engineering talent is high.
Yeeld gave Lemon.io a specific brief covering the stack, the time zone, and the working style. Lemon.io returned a short list of senior full-stack candidates with proven track records on comparable projects, which Yeeld could review and interview directly through Lemon’s portal.
I'm technical enough to know what APIs are and how they work, but I'm not an engineer. Being able to trust Lemon's vetting, and still interview and choose the person ourselves, mattered a lot to me.
Shipping within two weeks
Yeeld’s Lemon engineer was fully onboarded, through the codebase, and closing tickets within two weeks of signing. Working alongside Yeeld’s lead engineer, he took on core pieces of the platform:
- building out infrastructure
- implementing sales tax logic
- maintaining the processing fee matrix
- contributing to Yeeld’s surcharging solutions
Just as important was how the work happened. The developer operated independently, communicated clearly, and needed little explanation, functioning as a true extension of the team.
Lemon.io stayed engaged throughout the project: checking in on progress, confirming the fit was working, and offering additional capacity if the roadmap called for it.
It felt like adding a teammate, not managing a contractor. The engineer just got to work.
A payments product in market
Yeeld’s Surcharging API went from design to launch on the company’s timeline, built to Yeeld’s standard, with engineering capacity scaled precisely to the project.
As Yeeld grows, the team expects to keep building in-house, and to keep turning to Lemon.io for targeted, project-based work where senior engineering talent and fast starts matter most.
For project-based work where we need a senior engineering person who can start fast, Lemon is our first call.
Divine devs that get things done
Viktor is a highly skilled full-stack engineer with over 12 years of experience spanning backend, frontend, and infrastructure development. He brings proven expertise in distributed systems, event-driven architectures, Kubernetes, AWS, Python, React and TypeScript. Viktor demonstrates clear, structured communication, adaptability, and a collaborative mindset, though his system designs can occasionally be overly abstract. He excels in roles that demand deep technical knowledge, particularly in complex backend and infrastructure projects.
Arsid is a backend-leaning full-stack engineer with strong practical experience in Node.js, TypeScript, and Svelte, complemented by React. He has architected and delivered complex marketplace and DeFi platforms, demonstrating solid skills in distributed systems, API design, and real-time features. Feedback highlights his product-focused mindset and calm, collaborative approach.
Kenneth is a Senior full-stack developer with over 16 years of experience, specializing in Node.js, React, TypeScript, and AWS. He has led multi-team projects at a major multinational software company known for creative, marketing, and document management tools and built several products from the ground up, including his own products, demonstrating strong back-end expertise and solid front-end skills. Candidate's excellent communication and adaptability to both enterprise and startup environments were highlighted during the vetting process!
Walman is a mid-to-senior full-stack engineer with over 13 years of experience, specializing in React, Node.js, React Native, and TypeScript. He has led teams and delivered projects across web and mobile platforms, demonstrating strong architectural skills and hands-on work with AWS, Azure, and SQL/NoSQL databases. His communication is clear and structured, with a proven ability to manage client needs and technical trade-offs. Some gaps were noted in JavaScript and React fundamentals, but his leadership and broad engineering background are well established.
Tymur is a Senior Full-Stack developer with over 10 years of experience in software development, including more than 5 years of team management in large enterprise companies. On a personal note, he is passionate about meeting people, traveling, learning languages, sports, and nature. Fluent in Ukrainian, English, and Arabic, Tymur possesses strong Node.js fundamentals and a deep understanding of the React/Redux ecosystem.
Meet Andrew — a senior Front-end developer with good knowledge of React concepts and the classic React ecosystem. Andrew has ambitions to create and implement his ideas in the project, but at the same time, he's always focused on the client's requirements. He has experience developing his startups and is ready to create something new and exciting for others. His previous projects include working on an AI-based testing system, a device-selling marketplace, and a cryptocurrency project.
Ardika is a Senior Full-Stack Engineer with strong Python backend and React frontend expertise, complemented by 5+ years working with AWS and TypeScript. He has led teams, designed scalable architectures, and built AI-powered backend systems, including automated food ordering platforms and AI-driven features in startup environments. He approaches problems thoughtfully and communicates clearly, demonstrating solid architectural skills in backend design, database optimization, and migration to modern frontend frameworks like Next.js. Ardika is confident and proactive, with experience managing projects and stakeholders directly.
Jonathan is a middle to senior full-stack engineer with deep expertise in React, Next.js, Node.js, and AWS, and strong experience in media and advertising tech. He has led frontend and integration projects, shipped complex editor tools, and contributed to microservices and cloud infrastructure. Communication is clear and collaborative, with proven mentoring and product ownership. Python is a secondary skill, suitable for scripting but not as a primary backend stack.
Nicolas is a passionate Senior Full-stack Web Developer with over 10 years of experience working with local and US-based software companies, agencies, and entrepreneurs. Nicolas demonstrates problem-solving skills, a good understanding of the React ecosystem, advanced knowledge of relational databases, and a solid understanding of key-value storage systems. He combines a solid academic background as a Systems Engineer with extensive experience in leading technologies. Nicolas is always willing to learn new things and seek new challenges.
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98% satisfaction rate
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Full-time contributors
You're looking for work you can sink your teeth into, and can commit 20 hours or more a week to see it through.
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