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
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.
Álvaro is an experienced engineer with a strong focus on building and evolving production web applications and shared design systems. He has a proven ability to take ownership of complex frontend work, make sound architectural decisions, and improve consistency and maintainability across products. His experience includes working closely with multiple engineering teams, contributing to internal platforms and customer-facing products, and supporting initiatives where reliability, scalability, and release quality are important. He communicates fluently with clients and colleagues and takes a proactive, collaborative approach to solving engineering problems and delivering practical product outcomes.
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!
Yevhen is a full-stack PHP/Magento engineer with a back-end focus with 20 years of experience, specializing in e-commerce architecture, legacy modernization, and performance optimization. He has led technical teams, owned production delivery, and is skilled in Docker, Kubernetes, CI/CD, and cloud infrastructure. His client-facing communication is clear and pragmatic, though his React and modern PHP fluency are at a middle level. Best suited for backend or Magento-focused roles requiring technical ownership and direct client interaction.
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.
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.
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.
Christoph is a senior AI engineer with 19 years of experience, specializing in agentic and RAG systems using LLMs, LangChain, LangGraph, and AWS. He has end-to-end ownership of production voice and messaging AI platforms, notably in healthcare with HIPAA compliance. Screening confirms strong skills in system architecture, real-time AI, and client-facing communication. He is suited for solo or small-team leadership roles in applied AI product development.
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.
Why choose us
We're looking for the right developers, that perfectly suit your team
A four-step vetting process
Our proprietary process includes professional and personal tests, live interviews, and multiple background checks.
Price-quality match
The majority of developers are from Eastern Europe, where startups can stretch their budget to do more with less.
Miraculous 48-hour matching
Two days (or less) to find you a perfect developer for your startup's needs.
98% satisfaction rate
That's the percentage of clients who hired the very first dev they were offered from the platform.
Zero-risk dev replacement
You don't wait for direction. You jump in headfirst, racking up quick wins, calling out improvements, and pushing for architectural decisions that set clients up for scale.
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.
Rocket hiring ride
Top-notch developers within 48 hours, hand-picked for your team.
