Hire the Top 3% of Freelance SDL Developers

Toptal is a marketplace for dedicated SDL developers, engineers, programmers, coders, architects, and consultants. Top companies and startups choose Toptal SDL freelancers for their mission-critical SDL development projects.

No-Risk Trial, Pay Only If Satisfied.

Hire Freelance SDL Developers and Engineers

Zlatko Karakas

Freelance SDL Developer
SerbiaToptal Member Since January 19, 2021

Zlatko is a senior C++ developer with experience in writing cross-platform desktop applications and 2D games, as well as occasional excursions in web development, which come in handy for integrating client/server software. His work often included dealing with various issues ranging from concurrency and multi-threading to UI/UX. Projects requiring reverse engineering and code optimization skills pique his interest.

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Jonathan Alfred Weekes

Freelance SDL Developer
United KingdomToptal Member Since March 11, 2019

Jonathan has nine years of experience performing development roles. He has an intuitive and grounded understanding of scalable front-end and back-end web development, macOS and Linux software development and architecture, and iOS and Android app development—both in a professional and personal context.

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Amer Zavlan

Freelance SDL Developer
Bosnia and HerzegovinaToptal Member Since February 15, 2018

Amer is a skilled developer who's always willing to learn something new and keeps his eye out for interesting challenges to take on. Amer enjoys working in web technologies such as Angular, React, .NET Core, Node.js, Ruby on Rails, Android, and Python.

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Yakir Elkayam

Freelance SDL Developer
IsraelToptal Member Since November 9, 2020

Yakir is a C++ developer and systems architect with two decades of experience and deep expertise in application programming and 3D game development. He has worked as a freelancer for 17 years, mainly with startup companies in Israel. Yakir has developed several products that have a global reach, including a game engine that's used by millions of math students worldwide.

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Guilherme Natal

Freelance SDL Developer
BrazilToptal Member Since August 17, 2022

Guilherme has nearly seven years of experience in website and application development, specializing in full-stack development and Linux server administration. Proficient in diverse technologies such as HTML/CSS, JavaScript, TypeScript, Node.js, React, Laravel, PHP, C#, and Python, he communicates in a clear and direct manner. Continuously dedicated to skill enhancement, Guilherme actively seeks opportunities for professional development.

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Srdjan Obucina

Freelance SDL Developer
SerbiaToptal Member Since August 5, 2019

Srdjan is a software engineer with more than a decade of international experience at companies such as Google, Cisco, Marvell, and Bouygues Telecom. He's an outstanding performer as an individual contributor, team member, and team leader. He possesses knowledge in an array of technologies, tools, design patterns, architectures, and algorithms with a strong portfolio of successful projects requiring broad and deep technical expertise and acumen.

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Christopher Mortenson

Freelance SDL Developer
AustraliaToptal Member Since August 29, 2022

Christopher is a results-oriented software engineer and a team player with proven leadership skills. With a passion for practical problem solving, he continuously strives to build the best solution for the business. Christopher's area of expertise lies in cloud architecture, high-performance computing, and 3D application development.

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Timofey Bugaevsky

Freelance SDL Developer
PortugalToptal Member Since March 23, 2021

Timofey is a full-stack software engineer with almost 20 years of experience. He's great at sustaining, enhancing, and optimizing performance for existing in-house built systems for small businesses. He's also skilled in developing unique products from scratch and has worked on projects with a budget of over $1,000,000. He can work with almost any language but prefers Laravel, Livewire, and MySQL for rapid application development and Elixir, Rust, and LiveView for robust and performant systems.

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Mats Bohlinsson

Freelance SDL Developer
SwedenToptal Member Since May 30, 2022

Mats is a versatile coder who enjoys making simple solutions to complex problems and developing in small, agile teams. He considers tests a vital part of every app and prefers Python, C++, C, and Java languages. Mats has a broad knowledge of technologies and likes to do everything from soldering, uC programming, and embedded Linux to CI, build systems, and Android apps.

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Carlos Velasquez

Freelance SDL Developer
HondurasToptal Member Since December 1, 2021

Carlos started working on web and software development professionally before even entering college. He has a particular passion for crafting unforgettable user experiences. Having formed various tech startups with brilliant colleagues, Carlos has had the opportunity to lead many kinds of projects, ranging from eCommerce platforms to AI-powered algorithmic trading bots. He loves meeting passionate people with deep stories and working with talented, multi-disciplinary teams.

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Oussama Nahiz

Freelance SDL Developer
MoroccoToptal Member Since February 24, 2022

Oussama is a dedicated and efficient full-stack developer with six years of experience in application layers, presentation layers, and databases. He focuses mainly on the JavaScript ecosystem and excels in React and React Native front-end development. Oussama is also passionate about Web3 and blockchain technology.

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Discover More SDL Developers in the Toptal Network

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Toptal in the press

... allows corporations to quickly assemble teams that have the right skills for specific projects.

Despite accelerating demand for coders, Toptal prides itself on almost Ivy League-level vetting.

Our clients
Creating an app for the game
Conor Kenney
Creating an app for the game
Leading a digital transformation
Elmar Platzer
Leading a digital transformation
Building a cross-platform app to be used worldwide
Building a cross-platform app to be used worldwide
Drilling into real-time data creates an industry game changer
Drilling into real-time data creates an industry game changer
Tripcents wouldn't exist without Toptal. Toptal Projects enabled us to rapidly develop our foundation with a product manager, lead developer, and senior designer. In just over 60 days we went from concept to Alpha. The speed, knowledge, expertise, and flexibility is second to none. The Toptal team were as part of tripcents as any in-house team member of tripcents. They contributed and took ownership of the development just like everyone else. We will continue to use Toptal. As a startup, they are our secret weapon.

Brantley Pace

CEO & Co-Founder

I am more than pleased with our experience with Toptal. The professional I got to work with was on the phone with me within a couple of hours. I knew after discussing my project with him that he was the candidate I wanted. I hired him immediately and he wasted no time in getting to my project, even going the extra mile by adding some great design elements that enhanced our overall look.

Paul Fenley


The developers I was paired with were incredible -- smart, driven, and responsive. It used to be hard to find quality engineers and consultants. Now it isn't.

Ryan Rockefeller


Toptal understood our project needs immediately. We were matched with an exceptional freelancer from Argentina who, from Day 1, immersed himself in our industry, blended seamlessly with our team, understood our vision, and produced top-notch results. Toptal makes connecting with superior developers and programmers very easy.

Jason Kulik


As a small company with limited resources we can't afford to make expensive mistakes. Toptal provided us with an experienced programmer who was able to hit the ground running and begin contributing immediately. It has been a great experience and one we'd repeat again in a heartbeat.

Stuart Pocknee


How to Hire SDL Developers Through Toptal


Talk to One of Our Industry Experts

A Toptal director of engineering will work with you to understand your goals, technical needs, and team dynamics.

Work With Hand-Selected Talent

Within days, we'll introduce you to the right SDL developer for your project. Average time to match is under 24 hours.

The Right Fit, Guaranteed

Work with your new SDL developer for a trial period (pay only if satisfied), ensuring they're the right fit before starting the engagement.


  • How are Toptal SDL developers different?

    At Toptal, we thoroughly screen our SDL developers to ensure we only match you with talent of the highest caliber. Of the more than 200,000 people who apply to join the Toptal network each year, fewer than 3% make the cut. You’ll work with engineering experts (never generalized recruiters or HR reps) to understand your goals, technical needs, and team dynamics. The end result: expert vetted talent from our network, custom matched to fit your business needs.

  • Can I hire SDL developers in less than 48 hours through Toptal?

    Depending on availability and how fast you can progress, you could start working with a SDL developer within 48 hours of signing up.

  • What is the no-risk trial period for Toptal SDL developers?

    We make sure that each engagement between you and your SDL developer begins with a trial period of up to two weeks. This means that you have time to confirm the engagement will be successful. If you’re completely satisfied with the results, we’ll bill you for the time and continue the engagement for as long as you’d like. If you’re not completely satisfied, you won’t be billed. From there, we can either part ways, or we can provide you with another expert who may be a better fit and with whom we will begin a second, no-risk trial.

Tap Into World-Class Talent

  • Trusted Experts Only

    Trusted Experts Only

    All of our talent are seasoned experts who ramp up quickly, readily contribute as core team members, and work with you to minimize onboarding time.

  • The Right Fit

    The Right Fit

    We have a knack for matching you with the right fit. Start working with your new hire on a no-risk trial period, paying only if satisfied.

  • Scale as Needed

    Scale as Needed

    Hire talent within 48 hours and scale your team up or down as needed, no strings attached.

  • Seamless Hiring

    Seamless Hiring

    We handle all aspects of billing, payments, and NDA’s. Let us take care of the overhead while you focus on building great products.

  • Flexible Engagements

    Flexible Engagements

    Choose the engagement type that suits your needs — hourly, part-time, or full-time — with the ability to change anytime.

  • Expert Talent Matching

    Expert Talent Matching

    Focus on your project and enjoy support from your dedicated account executive and expert talent matcher.

Top SDL Developers Are in High Demand.

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