CSO & CTO, Technology Services

25 Years of Experience

Previously At

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Technology Services/

Application Services and Modernization/

API Development Services

API Development Services – Power Real-time Interactions With Scalable APIs

Connect your software ecosystem with Toptal’s API Development Services. Our developers create robust, reliable APIs that facilitate fast and secure data exchange, enhance performance, and maximize efficiency.

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Clients Served

25,000+

Total Vetted Professionals

20,000+

Toptal Total Projects Delivered

64,000+

Industries Served

300+

TRUSTED BY LEADING BRANDS

Our Services

Toptal API Development Services

Toptal’s API Development Services offer clients a wide range of capabilities, from custom API development to full end-to-end delivery of scalable API solutions. We provide comprehensive strategies and seamless API integrations to optimize software systems and business operations.

Custom API Development

Build scalable, secure, and efficient custom APIs to connect your software systems and streamline business operations.

REST API Development

Create high-performance REST APIs that ensure efficient data exchange, improving user experiences across web and mobile applications.

Custom API Integration and Deployment

Integrate APIs seamlessly into your existing systems, enabling smooth workflows and maximizing efficiency for your business.

Third-party API Integrations

Connect with third-party APIs to enhance functionality, reduce development time, and extend the capabilities of your software.

API Gateway Implementation

Optimize and secure your API architecture with API gateway solutions for efficient traffic management and security enforcement.

Payment Gateway Integration

Process payments securely by connecting reliable payment gateways to your applications for seamless transactions.

Cloud API Development

Build cloud-based APIs that support integration with cloud platforms, ensuring scalability and reliability.

Mobile API Development

Enable smoother, more engaging user experiences with APIs designed specifically for mobile apps.

B2B API Development

Create APIs tailored for B2B integrations, allowing efficient data exchange between business systems and partners.

API Security and Authentication

Implement robust security measures like OAuth, JWT, and API keys to protect sensitive data.

API Documentation and Testing

Ensure optimal functionality and troubleshoot effectively with comprehensive API documentation and quality assurance, including functional, unit, and load testing.

GraphQL API Development

Leverage GraphQL for efficient data retrieval, optimizing API responses for modern applications.

Looking for guidance about the perfect API development service for your needs?

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PARTNERSHIP THAT WORKS

How We Deliver API Development Services

Our API development experts, with experience at leading companies, develop and deploy tailored solutions to meet your business needs and unique industry demands for sustainable results and long-term success.

Discover

A leader from our team assesses your business challenges, identifies opportunities, and recommends the most suitable engagement model.

Define

A Toptal leader will work with you to define your goals and service needs – from full end-to-end delivery to consulting services.

Develop

We will create your unique project timeline, process, and initial proposals, whether you’re integrating third-party APIs or building a custom API solution.

Deploy

Toptal will get to work, tracking quality assurance, handling project management, and maintaining the delivery schedule.

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Ali Faraj

CSO & CTO, Technology Services

Ali is an IT leader and strategist with 25+ years of experience at IBM, Verizon, Thomson Reuters, and Cognizant. He has led global teams, building and scaling multibillion-dollar annual growth. As a turnaround and strategic growth expert, he has jump-started innovation, grown revenue, and improved productivity. He has worked across verticals and across a wide range of technologies including AI/ML, cloud, ERP, CRM, ITSM, cybersecurity, and others.Ali is an IT leader and strategist with 25+ years of experience at IBM, Verizon, Thomson Reuters, and Cognizant. He has led global teams, building and scaling multibillion-dollar annual growth. As a turnaround and strategic growth expert, he has jump-started innovation, grown revenue, and improved productivity.

Previously At

CUSTOMIZED SOLUTIONS

API Development Solutions That Deliver Value

Toptal delivers leading API development services through its diverse talent network and flexible delivery models. We implement the right skills at each project phase, blending expertise from various roles for seamless execution.

Managed Delivery by Toptal
On-demand Talent and Teams

Managed Delivery by Toptal

End-to-end project delivery per your specific requirements.

CSO & CTO, Technology Services

Delivery Manager

API Architect

Lead API Developer

API Developer

Security Engineer

Manual QA

DevOps Engineer

Ali Faraj

CSO & CTO, Technology Services

Previously at

Technology Experience

25+ Years

Rachael Karaffa

Delivery Manager

Rachael serves as a Delivery Manager at Toptal with a focus on leading diverse global teams in developing innovative solutions for our clients. She works across multiple disciplines, including technology, marketing, and management consulting. Rachael specializes in managing people and client relationships, process optimization, and driving teams toward optimal business outcomes.

Previously Managed Client

Experience

9+ Years

Timothy Mensch

Verified Expert in Engineering

15+ Years

of Experience

API Architect

Tim is a senior software architect/engineer generalist. He has built the technology stack for multiple startups from the ground up. Tim also has experience rescuing projects and turning train wrecks into successful launches. He has worked in many domains, including retail, banking, the Internet of Things, high-performance servers, machine learning, gamification, and scalable application server design. He has worked with cloud servers from AWS, Google Cloud, and Azure.

Previously at

Bogdan Beca

Verified Expert in Engineering

24+ Years

of Experience

Lead API Developer

Bogdan has 24+ years of hands-on experience with enterprise-level systems, delivering tens of large projects for top organizations in energy, pharma, telco, eCommerce, banking, and the public sector. As a solutions architect, Bogdan can drive a solution from concept to production or provide end-to-end POCs (or MVPs) regarding solution architecture, design, development, and release pipelines.

Previously at

Tao Zhang

Verified Expert in Engineering

24+ Years

of Experience

API Developer

Tao is a senior full-stack developer and architect who worked on over 14 million lines of code on large-scale, real-time acquisition software projects. He primarily focused on the back end for more than 24 years. Tao's expertise is mainly in C++, C#, Java, Python web development, performance optimization, and troubleshooting in Azure and AWS.

Previously at

Peter Zaki

Verified Expert in Engineering

11+ Years

of Experience

Security Engineer

Peter is a security professional with 11 years of experience helping major multinational companies secure their infrastructures and customers. He is an experienced security engineer and consultant. Peter designs secure systems and applications, advising on security practices targeting web, cloud applications, and APIs. He works on secure application development, cloud-native security, and DevSecOps. Peter is a certified CISSP, OSCP, and AWS Solutions Architect – Associate.

Previously at

Seema K Nair

Verified Expert in Engineering

20+ Years

of Experience

Manual QA

Seema brings more than 20 years of software testing and quality assurance expertise to the table. She has substantial experience with manual testing and the test automation of web and mobile applications. Seema is a certified Scrum master, an IBM-certified Db2 professional, and an AWS-certified solutions architect comfortable with Agile and Waterfall approaches. Her in-depth knowledge of API and performance testing delivers excellent results.

Previously at

Christopher J. Stobie

Verified Expert in Engineering

15+ Year

of Experience

DevOps Engineer

Chris is a seasoned principal DevOps engineer with several years of experience building and managing applications. Formerly the director of DevOps/SRE at an AI company, Veritone, in Costa Mesa, CA, and a solutions architect at AWS. Chris has led numerous large-scale cloud architecture designs and implementations, including building a real-time serverless AI platform on AWS.

Previously at

On-demand Talent and Teams

20,000+ vetted professionals, ready to deploy individually or in teams.

API Solutions Architect

API Back-end Developer

Senior API Developer

API Product Manager

API Integration Consultant

API Developer

Full-stack Developer

Front-end Developer

Cloud Engineer

Verified Expert in Engineering

24+ Years

of Experience

API Solutions Architect

Piotr is a software developer, architect, and technical lead with 24+ years of experience working with CERN, Motorola Solutions, universities, and more. He has led projects, served as a scrum master, and developed and delivered complex web and mobile solutions, including business and technical requirements, architecture, 3rd-party API integrations, data acquisition, and processing for BI. Piotr co-developed the pan configuration language and has a PhD in computer science.

Previously at

Verified Expert in Engineering

20+ Years

of Experience

API Back-end Developer

Tudor is a senior IT professional with over 20 years of experience, focused on creating meaningful impact via software. He is an Agile practitioner and a team player. He has architected, led, and/or co-managed the development of four SaaS products and one physical asset procuring and leasing service since 2015. As an architect and senior back-end engineer, Tudor works closely with clients across various industries, including finance, payments, fintech, insurtech, and eCommerce.

Previously at

Verified Expert in Engineering

20+ Years

of Experience

Senior API Developer

Anne is an experienced developer who has worked both for large corporations and startups. After building financial trading applications for eight years as an engineer at Merrill Lynch, Anne founded and built LoudUp, a music-based social network that she designed, developed, and launched from the ground up. She specializes in .NET technologies and JavaScript.

Previously at

Verified Expert in Product Management

17+ Years

of Experience

API Product Manager

David is a customer-focused, results-oriented professional with 17 years of experience delivering digital products and P&L accountability in financial services and telecom, meeting the needs of consumers, SMB business owners, and corporate accounts. He delivers results with strengths in enterprise tech, SaaS, UXD, API integration, AI decision engines, B2B partnerships, credit risk management, omnichannel marketing, and overall product management in either large enterprise projects or agile.

Previously at

Verified Expert in Engineering

12+ Years

of Experience

API Integration Consultant

Urmila is a senior Salesforce consultant and certified developer with 12 years of experience. She is highly knowledgeable about advanced Apex programming, Aura components, LWC, Force.com sites, Salesforce Community, asynchronous Apex, REST integrations, and exposing RESTful APIs from Salesforce and Visualforce. Urmila has a good understanding of business and business concepts, enabling her to communicate with clients effectively.

Previously at

Verified Expert in Engineering

11+ Years

of Experience

API Developer

Nolan has worked on everything from back-end web development, front-end web development, mobile development, and machine learning (ML). After graduating, he got a job as an automation engineer at Ford, where he made a significant impact by delivering an essential proof of concept (POC) for management. Now Nolan would like to take on new challenges and projects!

Previously at

Verified Expert in Engineering

8+ Years

of Experience

Full-stack Developer

Brandon is an experienced full-stack developer who loves the process of bringing a person's vision to life through building applications. His biggest strength is that he can develop products quickly while not sacrificing quality. He also believes clear communication is key to exceeding expectations. Brandon is keen on TypeScript, which has allowed him flexibility in both back-end and front-end development.

Previously at

Verified Expert in Engineering

10+ Years

of Experience

Front-end Developer

Nicolas is a senior front-end engineer who has strong experience building bug-free, performant, and user-friendly mobile and web applications from scratch to production. His clients were well-known American organizations like NFL and Cox Automotive. Nicolas is a leader who has managed development teams and created project architecture. He expresses his passion for programming by participating in knowledge-sharing sessions, developing student learning guides, and mentoring.

Previously at

Verified Expert in Engineering

10+ Years

of Experience

Cloud Engineer

Vadim has ten years of experience as a cloud architect and DevOps engineer and a background in full-stack Java web development. His expertise includes infrastructure, optimization, deployment, CI/CD pipelines, migrations, and security. Vadim prides himself on being easy to work with and a great asset on complex projects requiring security and stability.

Previously at

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Looking for guidance about the perfect API development service for your needs?

UNRIVALED EXPERTISE

Our Talent Has Worked With Top Companies

Having previously worked with these leading global companies, our talent brings valuable insights and expertise to deliver world-class outcomes.

WHY ORGANIZATIONS CHOOSE US

Toptal in Action

Discover the cutting-edge benefits our clients enjoy from the global Toptal network.

Toptal helps leading investment advisory firm save an estimated $500,000 per year with API-first strategy.

Challenge: After a company restructuring, a leading investment advisory firm faced a shortage of technical expertise and a data integration strategy hindered by manual processes and outdated legacy systems. To stay competitive, the firm needed a customer-centric, data-driven solution to streamline client management and drive smarter, faster decision-making.

Solution: Toptal swiftly assessed the client’s current system and isolated issues with outdated management and unscalable peer-to-peer connections across their many apps. Leveraging Agile techniques to implement MuleSoft API, Toptal spent 18 months implementing an API-first strategy to replace old processes with automated, modernized solutions for 10 of the client’s applications.

Outcome: The new API-focused operating model saved the client 5,000 hours annually, valued at $500,000, while improving data consistency and reducing errors. By replacing peer-to-peer dependencies, Toptal’s solution enhanced functionality and created a scalable architecture for future growth.

Toptal worked relentlessly over many months for the successful launch of our new platform and MuleSoft capabilities.

CRM Leader

J.D. Power Award-winning Investment Advisory

OUR THOUGHT LEADERSHIP

Explore Insights From the API Development Field

Read the latest articles and resources to keep you current on emerging trends in API technologies, seamless integration, API security measures, and more.

Treat It Like a Product: API Management Best Practices

Taking on even a single API is a complex task, but it can be made easier by taking a product management approach. Optimize your API strategy with these best practices for security, design, governance, and more.

Milos Belcevic

Verified Expert in Product Management

10 Years of Experience

Milos is a digital product specialist who has built and shaped cutting-edge solutions at numerous international companies and innovative startups. He is currently a senior product manager at Clarivate Analytics, supporting teams working with an API-based product. Milos was a speaker at the ACE! 2023 conference, where he gave a talk titled “API Product Management 101: A Survival Guide for Non-Technical PMs.”

Expertise

Product Strategy Consulting API Product Management

Previously at