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Nickson M., Senior Python/Golang Engineer

Kampala, Uganda
Last Updated: 4 Jul 2023
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- 6 years of experience in IT - 5 years of experience with Golang - 6 years of experience with Python - Fluent English - Available ASAP

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Rostyslav, Rust Engineer

Czech Republic
Last Updated: 21 Jul 2023

- 8 + years experience in IT; - 5+ years experience working with Rust; - Good skills in creating smart contracts for Solana and NEAR Blockchains; - Experience in building a bridge to Casper Network; - Experience working with Filecoin, Zero Knowledge modules, and Fuel Blockchain; - Deep abilities with MySQL, PostgreSQL, MongoDB; - Experience working with Python, Java, PHP, Scala, and Spring; - Good knowledge of AWS ElasticSearch; - Experience working with Docker and Kubernetes (K8s); - Experience working with DeFi and DEX projects; - Deep skills with Apache Cassandra and Apache Spark; - English: Upper-Intermediate.

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Vladislav, Team Lead / Software Engineer

Last Updated: 18 Jan 2024

-Software Engineer with 7 years in the tech industry, with a robust computer science and software engineering background. - Strong knowledge of Vanilla PHP and JavaScript and front-end and back-end development skills. -Expertise spans prominent domains such as eCommercee& retail, Marketplace, Blockchain, Entertainment, Game dev, Social Network, Healthcare, Analytics, Education -Incorporated advanced technologies like Web3.js and Elasticsearch into projects, demonstrating a balance of front-end and back-end skills. -Capabilities extend beyond app architecture, database design, and optimization with MySQL and other databases. -Proven track record of leveraging Docker and Nginx for DevOps, underpinned by a solid grasp of Git. -Has effectively fulfilled the role of Team Lead, showcasing skills in mentorship, code review, and workflow optimization.

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PHP   7 yr.


JavaScript   6 yr.


TypeScript   3 yr.



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Fabio, Senior Software Engineer

Sorocaba, Brazil
Last Updated: 7 Aug 2023

- Dedication, seriousness, creativity to solve complex problems, experience in embedded and web software development. - Experience in software development mainly in Linux environment for both embedded and backend development. Experience in automotive industry and industrial automation, energy, wireless, ecommerce and others areas. - Upper-Intermediate English

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Go   6 yr.

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Roman P., Senior Java Developer

Last Updated: 4 Jul 2023

- Java Developer with 5+ years of experience. - Upper-Intermediate English.

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Our journey starts with a 30-minute discovery call to explore your project challenges, technical needs, and team diversity. Meet Carefully Matched GRPC Talents. Within 1-3 days, we’ll share profiles and connect you with the right talents for your project. Schedule a call to meet engineers in person. Validate Your Choice. Bring a new GRPC developer on board with a trial period to confirm that you’ve hired the right one. There are no termination fees or hidden costs.

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Upstaff Managers conduct an introductory round with potential candidates to assess their soft skills. Additionally, the talent’s hard skills are evaluated through testing or verification by a qualified developer during a technical interview. The Upstaff Staffing Platform stores data on past and present GRPC candidates. Upstaff managers also assess talent and facilitate rapid work and scalability, offering clients valuable insights into their talent pipeline. Additionally, we have a matching system within the platform that operates in real-time, facilitating efficient pairing of candidates with suitable positions.

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Table of Contents

Cases when GRPC does not work

  1. Firewall Restrictions: When there are strict firewall restrictions in place, GRPC may not work as expected. GRPC relies on bi-directional communication, which involves opening a separate channel for communication. If the firewall is blocking this communication channel, GRPC will not function properly.
  2. Protocol Mismatch: GRPC uses the HTTP/2 protocol for communication. If the client or server does not support HTTP/2, or if there is a version mismatch, GRPC will not work. It is essential to ensure that both the client and server are compatible with the HTTP/2 protocol.
  3. Unsupported Platforms: While GRPC supports a wide range of platforms, there may be certain platforms or operating systems where it does not work. For example, if you are using an older version of an operating system that does not have the necessary dependencies or libraries for GRPC, it may not function correctly.
  4. Network Connectivity Issues: GRPC relies on a stable network connection for communication between the client and server. If there are network connectivity issues, such as high latency, packet loss, or intermittent connectivity, GRPC performance may be affected, and it may not work as expected.
  5. Resource Constraints: GRPC can consume significant resources, such as CPU and memory, especially when handling a large number of concurrent requests. If the server or client does not have sufficient resources to handle the workload, GRPC may not work efficiently or may even crash.
  6. Incorrect Configuration: GRPC requires proper configuration on both the client and server sides. If the configuration settings are not accurately set up, GRPC may not work correctly. It is crucial to review and verify the configuration settings to ensure they align with the GRPC requirements.

How and where is GRPC used?

Case NameCase Description
Microservices ArchitectureGRPC is widely used in microservices architecture as it allows for efficient communication between different services. With GRPC, services can define their own interfaces using Protocol Buffers, which provides a language-agnostic and platform-independent way of defining the structure of the data being exchanged. This enables seamless communication between microservices written in different programming languages, making it easier to build and scale complex distributed systems.
Real-Time CommunicationGRPC’s support for bidirectional streaming makes it an excellent choice for real-time communication applications. For example, a chat application can utilize GRPC to enable instant messaging between users. GRPC’s efficient binary serialization and multiplexing capabilities help reduce latency and bandwidth usage, resulting in a smoother and more responsive user experience.
Distributed SystemsGRPC is well-suited for building distributed systems that span across multiple machines or even data centers. Its support for load balancing, service discovery, and fault tolerance makes it a reliable choice for large-scale deployments. For instance, a distributed database system can leverage GRPC to ensure consistent and efficient communication between its nodes, enabling seamless replication and data synchronization.
Internet of Things (IoT)GRPC’s lightweight and efficient nature make it ideal for IoT applications. IoT devices often have limited resources and require a communication protocol that minimizes bandwidth usage and processing overhead. GRPC’s compact binary format and support for streaming capabilities allow IoT devices to communicate efficiently with backend systems, enabling tasks such as remote control, sensor data collection, and firmware updates.
Cloud Native ApplicationsGRPC plays a crucial role in the development of cloud-native applications. Its support for service mesh frameworks like Istio allows for secure and scalable communication between microservices within a cluster. GRPC’s built-in support for authentication, authorization, and transport security ensures that sensitive data is protected in a cloud environment. Additionally, GRPC’s compatibility with Kubernetes and other container orchestration platforms simplifies the deployment and management of cloud-native applications.

Pros & cons of GRPC

8 Pros of GRPC

  • Efficiency: GRPC uses a binary protocol that is highly efficient in terms of payload size and processing speed. It uses Protocol Buffers, which are smaller and faster to parse compared to other formats like JSON or XML.
  • Language Agnostic: GRPC supports multiple programming languages, including C++, Java, Python, Go, and more. This allows developers to use their preferred language and seamlessly communicate between different services.
  • Bidirectional Streaming: GRPC supports bidirectional streaming, which means both the client and server can send multiple messages asynchronously. This enables real-time communication and is particularly useful for applications like chat or streaming.
  • Code Generation: GRPC uses Protocol Buffers to define service interfaces and messages, which can be used to generate client and server stubs automatically. This reduces the amount of boilerplate code developers need to write and ensures consistency between client and server implementations.
  • Interoperability: GRPC supports interoperability between different platforms and languages, making it easier to integrate existing systems and services. It provides compatibility with HTTP/2, which allows it to work seamlessly with existing web infrastructure.
  • Authentication and Authorization: GRPC supports various authentication mechanisms, including SSL/TLS, OAuth, and JWT. This ensures secure communication between services and enables fine-grained access control.
  • Error Handling: GRPC provides a rich set of error codes and status messages, making it easier to handle and propagate errors across different services. This improves debugging and error reporting in distributed systems.
  • Bi-directional Code Generation: GRPC allows generating both client and server code from the same interface definition. This simplifies the development process and ensures consistency between client and server implementations.

8 Cons of GRPC

  • Learning Curve: GRPC requires developers to learn new concepts and technologies, such as Protocol Buffers and service definition language. This can increase the learning curve for developers who are not familiar with these technologies.
  • Complexity: GRPC can introduce additional complexity to the system architecture, especially when dealing with distributed systems. Developers need to carefully design and manage the communication between different services.
  • Versioning: GRPC does not have built-in support for versioning, which can make it challenging to evolve services without breaking backward compatibility. Developers need to implement their own versioning strategies.
  • Debugging: Debugging GRPC services can be more challenging compared to traditional RESTful APIs. Tools and libraries for debugging GRPC services may not be as mature or widely available.
  • Tooling: While GRPC has good support for popular programming languages, some less popular languages may have limited tooling and community support. This can make it harder to find resources and troubleshoot issues.
  • Network Overhead: Although GRPC is efficient in terms of payload size, it may introduce additional network overhead due to the binary encoding and decoding process. This can be a concern in high-latency or low-bandwidth environments.
  • Compatibility: GRPC relies on HTTP/2, which may not be supported by all existing infrastructure and proxies. This can limit the compatibility and deployment options in certain environments.
  • Migration: Migrating existing services to GRPC can be a complex and time-consuming process, especially if the services are built using different technologies or protocols. This can pose challenges for organizations with legacy systems.

What are top GRPC instruments and tools?

  • gRPCurl: gRPCurl is a command-line tool that allows you to interact with gRPC servers. It supports making both unary and streaming requests, and provides a convenient way to inspect and debug gRPC services. It was initially released in 2015 and has since become a popular choice among developers working with gRPC. With its simple and intuitive interface, gRPCurl has proven to be an invaluable tool for both testing and troubleshooting gRPC-based applications.
  • gRPC-Web: gRPC-Web is a JavaScript client library that enables web browsers to communicate directly with gRPC services. It allows developers to leverage the power of gRPC in browser-based applications, enabling seamless integration between frontend and backend systems. gRPC-Web was first introduced by Google in 2018 and has gained significant traction in the web development community. Its ability to generate TypeScript code from gRPC service definitions makes it a standout tool for building modern web applications.
  • BloomRPC: BloomRPC is a cross-platform desktop application that provides a graphical user interface for interacting with gRPC services. It offers features such as auto-completion, request history, and response visualization, making it easier for developers to explore and test their gRPC APIs. BloomRPC was first released in 2019 and has quickly become a favorite tool among developers due to its user-friendly interface and powerful debugging capabilities.
  • gRPCurl-gui: gRPCurl-gui is a graphical user interface (GUI) version of the gRPCurl command-line tool. It provides a more intuitive way to interact with gRPC services by offering a visual representation of the service methods and their request/response schemas. With gRPCurl-gui, developers can easily construct and send gRPC requests without having to remember the specific syntax of the command-line tool. This tool was developed in 2020 and has gained popularity for its simplicity and ease of use.
  • gRPC Gateway: gRPC Gateway is a HTTP/JSON gateway for gRPC services. It allows clients to access gRPC services using standard HTTP/JSON protocols, making it easier to integrate gRPC-based services with existing HTTP-based systems. gRPC Gateway was first introduced by Google in 2015 and has since been widely adopted by organizations seeking to expose their gRPC APIs to clients that do not natively support gRPC.
  • gRPCurl+: gRPCurl+ is an enhanced version of the original gRPCurl tool. It provides additional features such as request/response logging, timeout configuration, and support for custom headers. gRPCurl+ was introduced in 2021 to address the growing needs of developers working with gRPC, offering increased flexibility and control over the communication with gRPC services.
  • gRPC Benchmarks: gRPC Benchmarks is a performance testing tool specifically designed for gRPC. It allows developers to measure the throughput and latency of their gRPC services under different scenarios and load conditions. By simulating realistic workloads, gRPC Benchmarks helps identify potential bottlenecks and optimize the performance of gRPC-based applications. This tool has been actively maintained by the gRPC community since its initial release in 2016.
  • gRPCurl-tui: gRPCurl-tui is a terminal UI version of the gRPCurl tool. It provides a text-based interface for interacting with gRPC services, offering a more interactive and visually appealing experience compared to the command-line tool. gRPCurl-tui was developed in 2020 and has gained popularity among developers who prefer a terminal-based workflow.

Soft skills of a GRPC Developer

Soft skills are essential for a GRPC Developer to effectively collaborate, communicate, and adapt in a professional environment. These skills complement the technical expertise and contribute to the success of projects. Here are the soft skills required for GRPC Developers at different levels:


  • Problem-Solving: Ability to analyze and solve technical challenges efficiently.
  • Teamwork: Collaborate effectively with team members to achieve project goals.
  • Communication: Clearly communicate ideas and updates to team members and stakeholders.
  • Time Management: Efficiently manage time and prioritize tasks to meet deadlines.
  • Adaptability: Quickly adapt to changing project requirements and technologies.


  • Leadership: Demonstrate leadership skills by guiding and mentoring junior developers.
  • Critical Thinking: Apply logical reasoning and analysis to solve complex problems.
  • Conflict Resolution: Resolve conflicts within the team and maintain a positive work environment.
  • Presentation Skills: Deliver presentations to peers and stakeholders effectively.
  • Project Management: Successfully manage projects by coordinating tasks and resources.
  • Client Interaction: Interact with clients professionally and understand their requirements.
  • Self-Motivation: Take initiative and work independently to achieve project objectives.


  • Strategic Thinking: Develop and implement strategic plans for project success.
  • Decision Making: Make informed decisions based on project requirements and constraints.
  • Negotiation Skills: Negotiate effectively with clients and stakeholders for project goals.
  • Empathy: Understand and empathize with team members to foster a collaborative environment.
  • Conflict Management: Resolve conflicts between team members and stakeholders.
  • Mentorship: Mentor and guide junior developers to enhance their skills and knowledge.
  • Innovation: Identify opportunities for innovation and propose creative solutions.
  • Client Relationship Management: Manage client relationships and ensure client satisfaction.

Expert/Team Lead

  • Strategic Planning: Develop long-term strategies for project and team success.
  • Technical Leadership: Provide technical guidance and mentorship to the entire team.
  • Decision-Making: Make critical decisions that impact project outcomes and team performance.
  • Conflict Resolution: Resolve complex conflicts and maintain a harmonious work environment.
  • Team Management: Effectively manage and delegate tasks to team members.
  • Business Acumen: Understand the business aspects of projects and align them with goals.
  • Influencing Skills: Influence stakeholders and drive project decisions through effective communication.
  • Continuous Learning: Stay updated with the latest technologies and industry trends.
  • Risk Management: Identify and mitigate project risks proactively.
  • Quality Assurance: Ensure high-quality deliverables through rigorous quality assurance processes.
  • Client Management: Manage client expectations and maintain strong client relationships.

Let’s consider Difference between Junior, Middle, Senior, Expert/Team Lead developer roles.

Seniority NameYears of experienceResponsibilities and activitiesAverage salary (USD/year)
Junior Developer0-2 yearsAssisting with basic coding tasks, bug fixing, and testing. Learning and acquiring new skills, technologies, and frameworks. Collaborating with the team under supervision.$55,000 – $75,000
Middle Developer2-5 yearsDeveloping and implementing features and modules. Participating in code reviews and providing constructive feedback. Collaborating with cross-functional teams and contributing to the technical discussions and decision-making process.$75,000 – $100,000
Senior Developer5-10 yearsLeading the development of complex features and projects. Mentoring and providing guidance to junior and middle developers. Participating in architectural design and code optimization. Collaborating with stakeholders to define requirements and deliver high-quality software.$100,000 – $150,000
Expert/Team Lead Developer10+ yearsProviding technical leadership and guidance to the entire development team. Taking ownership of large-scale projects and ensuring their successful delivery. Mentoring and coaching team members. Collaborating with product owners and stakeholders to align technical solutions with business goals.$150,000 – $200,000+

TOP 12 Tech facts and history of creation and versions about GRPC Development

  • gRPC is an open-source remote procedure call (RPC) framework developed by Google in 2015.
  • gRPC was created as an efficient and scalable alternative to traditional web APIs such as REST.
  • gRPC uses the Protocol Buffers (protobuf) language for defining service interfaces and message types.
  • gRPC supports multiple programming languages including C++, Java, Python, Go, and more.
  • gRPC utilizes HTTP/2 as its underlying transport protocol, providing features like multiplexing, flow control, and header compression.
  • gRPC supports both unary and streaming RPCs, allowing for efficient communication between clients and servers.
  • The initial release of gRPC included support for C++, Java, and Go, with support for more languages added in later versions.
  • gRPC has gained popularity in the microservices architecture, as it allows services to communicate with each other seamlessly.
  • gRPC provides built-in support for authentication, load balancing, and error handling, making it a robust choice for distributed systems.
  • gRPC has a strong focus on performance and efficiency, offering features like message compression and optimized serialization.
  • gRPC has a thriving community of developers and contributors, with active support and continuous improvements.
  • gRPC is widely used by companies like Netflix, Square, and CoreOS for building scalable and reliable distributed systems.

TOP 12 Facts about GRPC

  • gRPC is an open-source remote procedure call (RPC) framework developed by Google.
  • It uses Protocol Buffers (protobuf) as its interface description language.
  • gRPC supports multiple programming languages, including Java, C++, Python, Go, and more.
  • It is designed to be efficient, lightweight, and highly scalable.
  • gRPC uses HTTP/2 as its underlying protocol, which provides features like multiplexing, flow control, and header compression.
  • It supports both unary and streaming RPCs, allowing for various communication patterns between client and server.
  • With gRPC, you can define your service once and generate client and server code in multiple languages automatically.
  • It provides built-in support for authentication, load balancing, and bidirectional streaming.
  • gRPC offers strong type checking and automatic serialization and deserialization of messages.
  • It has a rich ecosystem with various tools and libraries available for developers.
  • gRPC is widely used in microservices architectures, cloud-native applications, and distributed systems.
  • It has been adopted by major companies like Netflix, Square, Cisco, and CoreOS, among others.

Hard skills of a GRPC Developer

Hard skills of a GRPC Developer


  • Programming Languages: Proficiency in at least one programming language like Java, C++, or Go to develop GRPC services.
  • GRPC Basics: Understanding the fundamentals of GRPC, including service definition, message types, and RPC (Remote Procedure Call).
  • Protocol Buffers: Familiarity with Protocol Buffers for defining message formats and service interfaces.
  • Networking: Knowledge of networking concepts like TCP/IP, HTTP, and REST API.
  • Debugging and Troubleshooting: Ability to debug and troubleshoot GRPC services using tools like Wireshark or gRPC debugging tools.


  • Advanced GRPC Concepts: In-depth understanding of advanced GRPC concepts like error handling, authentication, and encryption.
  • Concurrency: Proficiency in handling concurrent requests and ensuring thread safety in GRPC services.
  • Performance Optimization: Experience in optimizing GRPC services for high performance and low latency.
  • Load Balancing: Knowledge of load balancing techniques and integration with load balancers like Nginx or HAProxy.
  • API Design: Ability to design clean and scalable APIs for GRPC services.
  • Testing: Experience in writing unit tests and integration tests for GRPC services.
  • Containerization: Familiarity with containerization technologies like Docker and container orchestration platforms like Kubernetes.


  • Microservices Architecture: Experience in designing and developing microservices using GRPC as the communication protocol.
  • Distributed Systems: Knowledge of distributed systems concepts like fault tolerance, consistency, and scalability.
  • Service Mesh: Familiarity with service mesh frameworks like Istio or Linkerd for managing GRPC-based microservices.
  • Performance Monitoring: Proficiency in monitoring and optimizing the performance of GRPC services using tools like Prometheus or Grafana.
  • Security: Understanding of security best practices for securing GRPC communications using TLS/SSL.
  • Versioning and Compatibility: Experience in managing versioning and backward compatibility of GRPC services.
  • CI/CD: Knowledge of continuous integration and continuous deployment pipelines for GRPC services.
  • Team Leadership: Ability to lead a team of GRPC developers and mentor junior developers.

Expert/Team Lead

  • Architecture Design: Proven expertise in designing highly scalable and fault-tolerant GRPC architectures.
  • Performance Tuning: Extensive experience in fine-tuning and optimizing the performance of GRPC services at scale.
  • API Gateway: Knowledge of API gateway solutions like Envoy or Kong for managing external access to GRPC services.
  • Service Discovery: Familiarity with service discovery mechanisms like Consul or etcd for dynamic service registration and discovery.
  • Cloud Platforms: Experience in deploying and managing GRPC services on cloud platforms like AWS, Google Cloud, or Azure.
  • Monitoring and Observability: Proficiency in implementing end-to-end monitoring and observability solutions for GRPC services.
  • DevOps: Expertise in implementing DevOps practices and automation for GRPC service deployment and management.
  • Code Review and Quality Assurance: Strong skills in code review and ensuring code quality and adherence to GRPC best practices.
  • Technical Leadership: Demonstrated ability to provide technical guidance and leadership to GRPC development teams.
  • Problem Solving: Exceptional problem-solving skills and the ability to handle complex technical challenges in GRPC development.
  • Communication and Collaboration: Strong communication and collaboration skills to effectively work with cross-functional teams and stakeholders.

TOP 10 GRPC Related Technologies

  • Go

    Go, also known as Golang, is a popular open-source programming language known for its simplicity and efficiency. It is widely used for building scalable and high-performance software, making it an excellent choice for GRPC development. With its built-in support for concurrency and strong typing, Go provides a solid foundation for developing robust and reliable GRPC applications.

  • Java

    Java is a widely adopted programming language known for its versatility and portability. It has a strong ecosystem and extensive libraries that make it suitable for various software development projects, including GRPC. Java’s compatibility with different platforms and its mature tooling support make it a popular choice for building GRPC-based applications.

  • C++

    C++ is a powerful and efficient programming language commonly used for system-level development and performance-critical applications. Its low-level control and ability to interact with hardware make it a preferred choice for building high-performance GRPC software. C++ is often used in scenarios where speed and resource optimization are crucial.

  • Rust

    Rust is a modern systems programming language designed for safety, concurrency, and performance. It provides strong memory safety guarantees while offering low-level control over system resources. Rust’s focus on correctness and reliability makes it an excellent choice for developing secure and efficient GRPC applications.

  • Python

    Python is a versatile and beginner-friendly programming language widely used in various domains, including web development, data analysis, and AI. While not as performant as lower-level languages, Python offers simplicity and ease of use, making it an excellent choice for rapid prototyping and building GRPC applications where performance is not a primary concern.

  • Node.js

    Node.js is a popular runtime environment for executing JavaScript code on the server-side. It provides a non-blocking, event-driven architecture that enables efficient handling of concurrent connections, making it suitable for building scalable GRPC services. Node.js’s extensive package ecosystem and developer-friendly environment make it a preferred choice for building fast and scalable GRPC applications.

  • Scala

    Scala is a powerful programming language that combines the object-oriented and functional programming paradigms. It runs on the Java Virtual Machine (JVM) and provides seamless interoperability with existing Java codebases. Scala’s expressive syntax and strong type system make it well-suited for building complex GRPC applications that require scalability and maintainability.

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