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I’m building a production-grade web application in Go and need a true senior who can take full ownership of the gRPC layer and overall code quality. The project is already underway, but I want every new service, handler, and helper package to follow idiomatic Go patterns, solid architecture principles, and rigorous testing standards. Your day-to-day work will revolve around designing and implementing gRPC services, wiring in observability hooks, and refining existing modules so they remain clean, performant, and easy to maintain. I speak Russian fluently—if you do as well, communication will be faster and more nuanced; English at a conversational level is enough for written updates and pull-request discussions. Key focus areas • Write clear, well-documented Go code that could pass any senior-level code review • Design and implement gRPC endpoints, contracts, and middleware • Add robust observability (metrics, traces, logs) so we spot issues early in production • Keep build pipelines simple and reliable (Go modules, make, Docker) • Review PRs and mentor less-experienced contributors when time allows Deliverables (acceptance criteria) 1. A fully functional gRPC service package compiled without linting errors and covered by tests (≥90 % line coverage). 2. Integrated observability hooks exposing metrics and traces that can be scraped by Prometheus and visualised in Grafana. 3. Build and run instructions plus concise ADR-style documentation for architectural decisions. If you have a history of launching high-traffic Go web services, can discuss trade-offs in Russian, and enjoy producing elegant, maintainable code, I’d love to see what you can do.
Project ID: 40259477
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Active 1 mo ago
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124 freelancers are bidding on average $2,140 USD for this job

Hello, I'm Muhammad Awais, and I can own your gRPC layer end to end with idiomatic Go, strong architecture, and robust tests. I will design and implement gRPC endpoints and middleware, enforce clean module boundaries, and add observability hooks (metrics, traces, logs) so your service stays observable in production. I’ll keep the build pipeline simple using Go modules, Make, and Docker, and I’ll provide clear ADR documentation and concise run instructions. My approach: audit current code, define stable service contracts, implement idiomatic Go patterns, add comprehensive unit and integration tests (targeting ≥90% line coverage), wire in Prometheus metrics and tracing (OpenTelemetry where appropriate), and create lightweight, maintainable architecture with clear documentation. I will mentor teammates where time allows and provide Russian-English updates as needed for smooth collaboration. What is the expected service maturity for the first milestone (contracts, middleware, tests, and observability) and any preferred tracing backend or metrics naming conventions? Rate limits or QoS requirements I should honor? Any existing gRPC service contracts or proto definitions I must align with? Which Go version and CI/CD tools are in current use? Are there security or auth requirements for the gRPC endpoints? Do you prefer a specific logging format or structure? Any regional data residency constraints? What is the expected latency budget for the core paths? Do you have preferred ADR stru
$3,000 USD in 23 days
7.9
7.9

Hello! I can take full ownership of your Go gRPC layer and ensure every service follows idiomatic Go standards, clean architecture principles, and production-grade reliability. Here’s how I’d approach it: • Design clear protobuf contracts with versioning strategy • Implement gRPC services using clean layered architecture (transport → service → domain → repository) • Enforce strict code quality with golangci-lint and consistent style rules • Write comprehensive unit + integration tests targeting ≥90% coverage • Integrate structured logging, tracing (OpenTelemetry), and metrics (Prometheus) • Expose metrics endpoints ready for Grafana dashboards • Keep builds simple with Go modules, Makefile, and Docker • Produce ADR-style documentation for architectural decisions • Review PRs and mentor contributors where needed Deliverables: • Fully functional, lint-clean gRPC service package • ≥90% tested code coverage • Prometheus-ready metrics and tracing • Clear build/run instructions • Architecture documentation I’ve worked on high-load Go services with strong observability and structured modular design. If needed, we can communicate in Russian for deeper architectural discussions. Ready to review your current structure and define improvement milestones immediately. Best regards, Jasmin
$2,250 USD in 7 days
7.2
7.2

With over a decade of experience in web and mobile development, including expertise in Go and gRPC, I understand the importance of solid architecture and rigorous testing standards for your project. Your need for a true senior who can own the gRPC layer aligns perfectly with my skill set. I have a proven track record in building high-traffic web services, ensuring clean code and performance optimization. My experience in designing and implementing gRPC endpoints, as well as adding robust observability features, will help elevate your project to the next level. If you are looking for a seasoned professional who can deliver on your requirements and exceed your expectations, I am here to help. Let's discuss how I can add value to your project and ensure its success. Thank you for considering my proposal. I look forward to the opportunity to work together and deliver exceptional results for your senior Go gRPC web application.
$2,400 USD in 30 days
7.0
7.0

Drawing on a decade's worth of experience building and mentoring teams to develop high-quality, scalable products in Go, my team at WellSpring Infotech has the meticulousness and ingenuity essential for your Senior Go gRPC Web App project. Our core competency in Backend Development is attested to by our proficiency in Go, a language whose idiomatic patterns we understand deeply. We are practiced in the craft of wiring services, developing middleware and contracts, and installing observability hooks for troubleshooting - activities central to this project. Moreover, as fervent believers in documentation, we will furnish you with substantial records of our architectural decisions and detailed build instructions as per your criterion #3. Our robust observation scheme - equipped with metrics accessible to Prometheus and plotted in Grafana - will be designed not only to track bugs but also to gauge performance issues before they disrupt production. Overarchingly, our commitment is to deliver maintainable code aligned with best practices and tested for line coverage efficiency. In light of our values and skillset, WellSpring Infotech stands uniquely positioned to bring this project into fruition. Let's actualize your vision; let's ensure the longevity, readability, and performance of the codebase underpinning your web application!!! Thank you!!!
$2,000 USD in 7 days
6.2
6.2

Hi there For a production Go system, the most critical part is ensuring the gRPC layer is not just functional but architecturally clean and future-proof. Contracts, middleware, and observability must be designed deliberately so services scale without fragmentation. I would structure each gRPC package with clear domain boundaries, strict interface definitions, and dependency injection to keep services testable and modular. Middleware would handle authentication, tracing, logging, and error normalization consistently across endpoints. Observability would be integrated using OpenTelemetry for tracing and Prometheus metrics exposure, ensuring seamless Grafana visualization. CI would enforce linting, static analysis, and ≥90% coverage through table-driven tests and integration scenarios. Docker builds and make targets would remain simple and reproducible. My approach prioritizes idiomatic Go, clean ADR documentation, and production reliability from day one. Once I review the current repository structure, I can propose concrete refactoring steps and timeline alignment. If this aligns, let’s discuss in detail via private chat.
$2,000 USD in 5 days
6.1
6.1

Hello, We understand that you need a senior Go developer to take full ownership of the gRPC layer and ensure high code quality in your production-grade web application. Our expertise aligns perfectly with your requirements, allowing us to deliver clear, well-documented Go code and implement robust gRPC endpoints, contracts, and middleware tailored to idiomatic Go practices. Our experience includes launching high-traffic web services, where we maintained rigorous testing standards and built observability into applications for proactive issue detection. Notable projects include the MadPaws platform, designed for high user volumes and seamless performance, and the TutorTime marketplace, which emphasizes user interaction and reliability. Let’s connect and discuss how we can help elevate your project with our expertise. Looking forward to continuing this conversation!
$2,000 USD in 20 days
6.2
6.2

Hi, I have extensive experience building production-grade Go applications, with a focus on gRPC services and high-quality, maintainable code. I can take full ownership of your gRPC layer, ensuring every service, handler, and package follows idiomatic Go patterns, solid architecture principles, and rigorous testing standards. My expertise includes designing and implementing gRPC endpoints, adding observability hooks for metrics, traces, and logs, and ensuring all modules are clean, performant, and easy to maintain. I’m also comfortable with Docker and CI/CD pipelines (Go modules, make, Docker). Additionally, I’m capable of mentoring less-experienced contributors when required. I’ll ensure your gRPC service package is fully functional, covered by tests, and integrates with observability tools like Prometheus and Grafana, with proper ADR-style documentation for all architectural decisions. Best, Justin
$2,000 USD in 15 days
6.1
6.1

⭐⭐⭐⭐⭐ We at CnELIndia, led by Raman Ladhani, bring extensive experience in building production-grade Go applications and gRPC services with a focus on clean architecture, idiomatic patterns, and rigorous testing. We can take full ownership of your gRPC layer, ensuring each service, handler, and helper package meets ≥90% test coverage and passes senior-level code reviews. Our team will implement robust observability hooks using Prometheus and Grafana, simplify build pipelines with Go modules, Docker, and Make, and provide concise ADR-style documentation for all architectural decisions. Additionally, we can mentor junior contributors and maintain high code quality. With proficiency in English and Russian, we ensure seamless communication, fast feedback, and clear collaboration throughout the project lifecycle, delivering performant, maintainable, and production-ready services.
$2,250 USD in 7 days
5.9
5.9

Reliability isn't a feature; it's a foundational requirement. I’m here to ensure it’s built-in from day one. Your commitment to production-grade gRPC services in Go that emphasize idiomatic patterns, observability, and rigorous testing reflects a clear understanding of what scalable, maintainable systems demand. At DigitaSyndicate, a UK-based digital systems agency, we build precision-engineered automation, modern web platforms, and AI-driven systems designed for performance and long-term scalability. Our approach aligns seamlessly with your need for clean, performant code and robust observability integrated from the outset. Having delivered complex Go microservices with comprehensive Prometheus and Grafana instrumentation in production, I can help elevate your architecture and code quality. Can you share your main priorities and timeline so I can map out the right execution plan for you? Casper M. Project Lead | DigitaSyndicate Precision-Built Digital Systems.
$2,250 USD in 14 days
5.5
5.5

Hello, I’m excited about the opportunity to contribute to your project. With my expertise in building production-grade Go services and designing clean, idiomatic gRPC architectures, I can take full ownership of your service layer, ensuring well-structured contracts, middleware, test coverage above 90%, and code that stands up to rigorous senior-level review. I’ll implement structured observability using Prometheus metrics, distributed tracing, and structured logging, while keeping Docker-based builds and CI pipelines simple, reproducible, and production-ready. You can expect disciplined architecture decisions, clear ADR-style documentation, and maintainable, high-performance Go code designed for long-term scalability. Best regards, Juan
$1,500 USD in 7 days
5.6
5.6

Hi, I have extensive experience in creating production-grade Go web applications and can ensure your gRPC layer adheres to idiomatic patterns with top-notch code quality. I will design and implement gRPC endpoints while integrating observability hooks, ensuring a reliable and maintainable architecture. What specific challenges have you faced in your current implementation that you hope to address? Best regards,
$2,500 USD in 20 days
5.2
5.2

Hi there. With over 13 years of experience, I'm no stranger to complex backend development projects, just like the one you've described. I have garnered expertise in Python, which, alongside my versatility in C-based languages, allows me to adapt and excel at a wide range of tasks. Notably, I am skilled in implementing customized web automation and data mining solutions -- skills that can be directly applied to your gRPC project. In line with the specifications you've provided, I ensure that every single line of code I write is clear, well-documented, and strictly adheres to senior-level standards. My experience extends beyond writing solid and efficient Go code; I am highly capable of designing and implementing gRPC contracts and middleware with ease. Additionally, my history of launching high-traffic Go web services has equipped me with the ability to maintain rigorous standards while keeping build pipelines simple yet reliable. Being fluent-Russian speaker myself, our communications would be effectively nuanced if we were to work together. I can hold meaningful conversations about trade-offs in Russian which will expedite and enhance project discussion. This coupled with my ability to mentor less-experienced contributors when time allows make me uniquely qualified for this opportunity. Working with me would not only guarantee high-quality deliverables but also a smooth and enjoyable collaborating process for all teammates involved. Lookng forward to working with you.
$1,500 USD in 2 days
5.4
5.4

Hello there, I will take ownership of the gRPC layer, designing service contracts, implementing handlers and middleware, wiring observability into every endpoint, and maintaining test coverage above 90 percent across all new packages. For the middleware, I will chain gRPC interceptors, one each for tracing, Prometheus metrics, logging, and error mapping, so handler code stays focused on business logic and adding a new cross-cutting concern means writing one interceptor, not editing every service. Questions: 1) Are you using buf or protoc for proto compilation and linting? 2) Is the observability stack already running (Prometheus + Grafana), or does that need setup too? 3) What is the current size of the codebase, roughly how many services exist? Looking forward to your response. Best regards, Kamran
$1,700 USD in 15 days
5.2
5.2

As a veteran software developer with over 13 years of experience and expertise across various domains including mobile app and web development, I am highly skilled in designing and implementing APIs for high-performance applications. I bring an unparalleled commitment to writing clean, well-documented code that upholds senior-level standards. My track record of creating scalable, robust solutions aligns perfectly with your needs for this project. Not only have I mastered Go gRPC, but my proficiency in build pipelines using techniques like Go Modules, Make, Docker is also second to none. Additionally, as a practitioner of the application security arts, I recognize the cruciality of solid architecture principles and rigorous testing standards. This understanding ensures that I approach every module, service and handler package with a view to making them clean and maintainable. Furthermore, my adeptness at reviewing PRs and mentoring developers makes me an ideal candidate for helping your less-experienced contributors along the way when time allows. The fact that I can speak Russian fluently albeit our communication in English will suffice for written updates and pull-request discussions connotes my thorough understanding of your requirements and readiness to deliver.
$2,250 USD in 7 days
5.5
5.5

Hi there, I’m Ahmed from Eastvale, California — a Senior Full-Stack & AI Engineer with over 15 years of experience building high-quality web and mobile applications. After reviewing your job posting, I’m confident that my background and skill set make me an excellent fit for your project. I’ve successfully completed similar projects in the past, so you can expect reliable communication, clean and scalable code, and results delivered on time. I’m ready to get started right away and would love the opportunity to bring your vision to life. Looking forward to working with you. Best regards, Ahmed Hassan
$1,500 USD in 7 days
5.0
5.0

Senior Go gRPC Web App I’m a full-stack software engineer with expertise in React, Node.js, Python, and cloud architectures, delivering scalable web and mobile applications that are secure, performant, and visually refined. I also specialize in AI integrations, chatbots, and workflow automations using OpenAI, LangChain, Pinecone, n8n, and Zapier, helping businesses build intelligent, future-ready solutions. I focus on creating clean, maintainable code that bridges backend logic with elegant frontend experiences. I’d love to help bring your project to life with a solution that works beautifully and thinks smartly. To review my samples and achievements, please visit:https://www.freelancer.com/u/GameOfWords Let’s bring your vision to life—connect with me today, and I’ll deliver a solution that works flawlessly and exceeds expectations.
$1,500 USD in 4 days
4.9
4.9

I can help you. I understand the nuances of production-grade Go, specifically the risk of "shallow" 90% test coverage that tests implementation details rather than behavior. I will prioritize clean interface boundaries and proper context propagation to ensure your observability hooks capture actual bottlenecks without inflating latency. A hidden challenge in gRPC-heavy architectures is often proto-file versioning and maintaining backward compatibility across service boundaries; I’ll implement a structured workflow to prevent breaking changes. We can discuss these technical trade-offs in Russian to ensure no nuance is lost. My focus will be on ensuring your gRPC interceptors handle authentication and telemetry efficiently without turning into a maintenance burden.
$1,500 USD in 7 days
4.4
4.4

Your search for a senior Go developer to lead a production-grade gRPC application aligns perfectly with my recent work architecting low-latency microservices for high-concurrency environments. Having delivered distributed Go backends that handle massive throughput via Protobuf, I understand the nuances of building scalable, type-safe APIs that prioritize performance without sacrificing long-term maintainability. I focus on idiomatic Go patterns and "clean architecture" principles to ensure the system remains robust and modular as your feature set expands, ensuring that the codebase stays readable and extensible for the entire lifecycle of the project. I will implement a strictly decoupled service layer by separating gRPC transport logic from core business domains, utilizing Protoc for efficient schema generation and code consistency across the stack. My approach involves leveraging custom interceptors for centralized logging, authentication, and structured error handling, alongside Go’s native concurrency primitives—specifically context propagation and controlled worker pools—to ensure efficient resource management. I also integrate rigorous unit and integration testing using the testify and mock frameworks to ensure every service boundary is fully validated, providing a stable foundation that is ready for a high-traffic production environment. To align on the technical requirements, do you have the initial .proto definitions drafted, or will we be designing the service contracts together to optimize for specific data workflows? Additionally, are you planning to use gRPC-Gateway for REST fallback compatibility, or will the client-side communicate directly via gRPC-Web protocols? I’m available for a quick chat or a brief discovery call to review your current architecture and discuss how I can take full ownership of the backend development to meet your production-grade milestones.
$2,544 USD in 21 days
4.5
4.5

─── ⚡⭐⋆☆⋆⭐⚡ ─── Hi, Client. Hope you are doing well. I am a senior Go engineer with gRPC architecture ownership plus Prometheus Grafana and OpenTelemetry observability experience and I can communicate in Russian and English. I read the full scope and this job is to own your gRPC layer and raise overall code quality with idiomatic Go patterns and rigorous testing. You want clean maintainable services with middleware contracts lint clean builds and 90 percent plus test coverage plus ADR notes. I will design protobuf APIs implement interceptors and observability hooks and mentor via PR reviews while keeping Docker and make workflows reliable. Plan Audit current gRPC and module boundaries and define ADR decisions. Implement new gRPC services and middleware with strict validation. Add metrics traces and structured logs with Prometheus and Grafana targets. Increase test coverage with table tests mocks and integration harness. Document build run and architecture and support PR review cadence. Best, Siva
$2,250 USD in 7 days
4.4
4.4

Hi there, as a seasoned Go developer with a proven track record in building high-traffic web services, I am excited about the opportunity to take full ownership of the gRPC layer for your production-grade web application project. My expertise lies in designing and implementing gRPC services following idiomatic Go patterns and rigorous testing standards. With strong skills in Docker, continuous integration, and microservices, I am well-equipped to ensure solid architecture and code quality throughout the project.✅ Leveraging my experience in observability, I will implement robust metrics, traces, and logs to detect issues early on in the production stage.✅ By focusing on writing clear and well-documented Go code, I aim to meet senior-level code review standards and mentor less-experienced contributors when possible.✅ My approach includes simplifying build pipelines, ensuring reliable builds with Go modules and Docker, and producing concise architectural decision documentation. I am confident in meeting your deliverables and look forward to working together.
$2,000 USD in 10 days
4.5
4.5

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