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Sergey
Full-stack Web Developer
Poland/(GMT +1:00)
Meet Sergey, a full-stack JavaScript developer with over 8 years of experience. He can build outstanding web and mobile applications with React/Next.js and React Native and is also a true fan of TypeScript and the safety and efficiency it provides. Moreover, Sergey's solid soft skills and extensive experience help him to take ownership and deliver end-to-end solutions effectively.
Experience
11 years
Availability
Full-time
ReactReact NativeTypescriptNext.jsNode.jsNest.jsMaterial UIExpress.jsGCPMongoDBRedisTailwind CSSCypressRemixAWSMicrosoft AzureFirebasePostgreSQLTwilio APIDockerGraphQLSupabaseOpenAI API
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Joselmo
Back-end Web Developer
Brazil/(GMT -3:00)
Joselmo is a Python and Django backend engineer who has spent the last few years building data-heavy systems: a pipeline that standardizes data from many sources on AWS, and a freight platform where he built capacity-matching logic and an ML platform for trend analysis. He also led architecture, monitoring, and CI/CD work.
Experience
16 years
Availability
To be verified
PythonDjangoReactAWSCData ModelingSeleniumMicrosoft SQL ServerPuppeteer.jsKubernetesNode.jsVue.jsGCPLambdaC++SolidityPostgreSQLRedshiftAWS CloudFormationDocker
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Alexandru
UI/UX Designer
Spain/(GMT)
Alexandru is a UI/UX designer who works in Figma and design systems, with recent work spanning fintech, e-commerce, and AI products. He designed and now maintains the core UX for a student coaching platform with chat, tasks, events, and calendar sync, and also built a white-label travel site with reusable templates and light/dark theming.
Experience
10 years
Availability
Full-time
FigmaUI/UXProduct designDesign systemUser-centered designConfluenceInteraction DesignAdobe IllustratorAdobe PhotoshopAdobe Creative SuiteResponsive Web DesignProject managementWireframingPrototypingWebflowAI
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Guglielmo
Full-stack Web Developer
Italy/(GMT +1:00)
Guglielmo is a full-stack engineer working across React, Node.js, and Python, with recent work in fintech and data systems. He built a Stripe-based payment flow for financed B2B deals, a live KYB flow with CRM embeds, and earlier designed Python pipelines that transformed tens of millions of JSON records into BigQuery in under 8 minutes.
Experience
8 years
Availability
To be verified
PythonReactNext.jsGCPElixirReact NativeAmazon S3AIAPIDjango RESTBig DataBigQueryJavaAngularPostgreSQLPhoenixSQLAlchemyNode.jsNest.jsDatabase designDjangoDockerTypescriptFirebaseChat botsStripe API
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Mesha
Back-end Web Developer
Bosnia And Herzegovina/(GMT +1:00)
Mesha is a Go backend engineer who has led work on regulated and high-scale systems, from a telemedicine platform where he cut response times by 30% to a migration of 54 services from Java/Kotlin to Go with 10x lower memory use. More recently, Mesha built a support assistant in Python and LangGraph that classifies tickets and runs device diagnostics for a Fortune 50 telecom.
Experience
9 years
Availability
Part-time
PythonGolangFastAPIKubernetesAIReactAWSSolution architectureMicrosoft AzureLangChainFlaskPrompt engineeringGCPLLMRAGSQLOpenAI APIAzure DevOpsPostgreSQLGolang REST APIDockerOpenAPIAzure SQLAWS LambdaAmazon S3Amazon RDSGraphQLLangGraphAWS SES
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Henry
Front-end Web Developer
Germany/(GMT +1:00)
Henry is a frontend-first engineer working in Vue, Nuxt, React and TypeScript who led a 3-person team to ship a property-search app for iOS and Android from one codebase. He also lifted retention and appointment scheduling by 20%, and took a legacy events platform from 0 to 56% test coverage in three months.
Experience
10 years
Availability
Full-time
Nuxt.jsVue.jsTypescriptSentryCapacitorReactPusherPostgreSQLJestPreactAWSRuby on RailsNext.js
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Artem
Mobile Developer
United Kingdom/(GMT -5:00)
Artem is a senior iOS developer with 6+ years of commercial experience and a strong command of the Swift and Apple ecosystems. He has led projects, built apps from scratch, modernized legacy codebases, and delivered products across healthcare, security, and social networking — including contributing to Obimy, an app with over 5 million users. Artem has hands-on experience integrating AI and machine-learning models into mobile apps, converting pre-trained models to CoreML, and applying advanced architectural patterns like MVVM + Coordinator.
Experience
7 years
Availability
Full-time
SwarmSwiftMVVMSwiftUIRealmDependency InjectionCombineAWSAIMacOSFirebaseAPI Gateway
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Sven
Back-end Web Developer
Cyprus/(GMT +2:00)
Sven is a DevOps and platform engineer who works in Python, Docker and self-hosted LLM infrastructure. He built an open-source CVE triage system where Trivy agents scan servers and an LLM ranks findings by host context, benchmarking a nightly 5,000-job run on vLLM against API providers.
Experience
21 years
Availability
Part-time & Full-time
PythonLLMTerraformKubernetesDevOpsAWSSQLLinuxPostgreSQLFluxvLLMGCP
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William
Platform Engineer
Colombia/(GMT -5:00)
William is a platform engineer focused on Kubernetes, AWS, and Terraform who has spent the past few years designing cloud platforms from scratch. Recently he built a multi-tenant EKS setup with GitOps, Vault, Karpenter, and 28+ Terraform modules, plus a one-command system that spins up full customer environments.
Experience
20 years
Availability
Full-time
KubernetesTerraformDevOpsGolangAWSGCPDistributed SystemsInfrastructure provisioningMicrosoft AzureLinuxDockerTerragruntMicroservicesVaultHelmAmazon RDSDatadogAmazon ECSPythonJenkinsOracleAnsible
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Developers who got their wings at

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Testimonials

Start to finish in under a week with zero wasted time

Reached out on Monday evening, connected Tuesday morning, had four qualified candidates by Wednesday.

Brian DeSpainCEO, 10X ERP

High quality, well-qualified developers

We had an excellent experience. Process is fast from the initial intake through setting up payment.

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The developers helped us speed up. They quickly learned their part of the app and we’re grateful for their contribution.

Conor MackenDirector of Engineering, tvScientific

Lemon.io does the hiring work. You pick the Docker Swarm developer.

We vet every developer

Every Docker Swarm developer passes a live interview with a senior engineer. We accept 1.2% of applicants.

No juniors, 3+ years

We hand-pick your matches

A matching expert picks people by your stack, domain and time zone, and tells you why each one fits.

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The lemon tea

Swarm developers for simple container clusters

Docker Swarm keeps container orchestration simple for teams that don't need Kubernetes. We find developers who run Swarm well and know when it's time to move on.

Rolling updates, safely

Candidates walk through rolling updates, health checks and secrets in Swarm. Not knowing how a failed update rolls back is a fail.

Container profiles

Swarm rarely stands alone on a CV. Look for it beside Docker and Kubernetes in Lemon's open database and request introductions.

Migration sized first

Thinking of moving from Swarm to Kubernetes? Ask a Lemon analyst to put hours on it first.

What you should know about modern Swarm devs

by Nataliia Stasiuk

Recruiter at Lemon.io

Verified Expert

Hiring Guide: Swarm Developers

Why Hire Swarm Developers

Hiring expert Swarm developers is essential for companies building decentralized, peer-to-peer storage and data distribution applications. Swarm—a distributed storage and communication system integrated with the Ethereum network—enables developers to design dApps that are resilient, censorship-resistant, and highly scalable. Skilled Swarm developers can help your business decentralize file storage, manage blockchain-integrated assets, and ensure data integrity across distributed nodes without relying on centralized servers.

What Swarm Developers Do

Swarm developers build and maintain decentralized systems using Ethereum Swarm (BZZ) to store, share, and deliver data securely. They architect distributed storage infrastructures, implement smart contract integrations, and optimize data availability across peer nodes. By leveraging Swarm’s P2P protocols, they create applications that can handle massive data traffic efficiently while reducing cloud storage dependency. Their expertise bridges blockchain technology with scalable backend solutions for Web3 ecosystems.

Core Responsibilities of a Swarm Developer

Design and implement decentralized storage solutions using Ethereum Swarm.
Integrate Swarm with smart contracts, Ethereum DApps, and Web3.js frameworks.
Develop APIs and middleware for data retrieval and distribution across Swarm nodes.
Manage encryption, access control, and key management for secure data transactions.
Optimize data redundancy and node synchronization for performance and resilience.
Deploy and maintain Swarm clusters for enterprise-grade applications.
Integrate Swarm with front-end interfaces to enable user uploads and distributed file access.
Collaborate with blockchain engineers to align Swarm functionality with token-based economics and incentives.

Essential Technical Skills

Languages: JavaScript, Go, Python, Solidity, TypeScript.
Frameworks: Web3.js, Ethers.js, Node.js, React, Next.js.
Blockchain & Decentralization: Ethereum, IPFS, Swarm (BZZ), Filecoin, OrbitDB.
Storage Technologies: P2P networking, distributed hashing, Merkle trees, swarm-chunking.
Security: Cryptography, encryption standards, wallet integrations.
DevOps & Cloud: Docker, Kubernetes, Terraform, AWS, GCP.
Soft Skills: Collaboration, distributed systems thinking, and blockchain economics understanding.

When to Hire Swarm Developers

You’re building a decentralized app (dApp) that requires secure and distributed data storage.
Your organization wants to migrate data from centralized cloud systems to decentralized alternatives.
You’re developing blockchain-based solutions such as NFT marketplaces or DAO document repositories.
You need developers experienced in integrating Ethereum smart contracts with Swarm infrastructure.
Your project requires scalable, censorship-resistant data distribution with redundancy protection.

Best Practices for Hiring Swarm Developers

Evaluate decentralized storage experience: Ensure candidates have hands-on experience with Swarm, IPFS, or Filecoin.
Test Ethereum integration knowledge: They should be able to connect smart contracts with Swarm storage using Web3 libraries.
Assess network and cryptographic skills: Strong understanding of P2P protocols, hashing, and data verification is crucial.
Review open-source contributions: Many skilled Swarm developers are active contributors to Ethereum or Swarm community projects.
Check scalability awareness: The candidate should understand how to optimize node performance and data availability.

Sample Interview Questions for Swarm Developers

“Explain how Swarm differs from IPFS in terms of architecture and functionality.”
“How do you handle data encryption and access control in Swarm?”
“Describe how Ethereum smart contracts can interact with Swarm.”
“What methods do you use to ensure data persistence in decentralized environments?”
“How would you set up and manage a Swarm cluster for enterprise applications?”
“What are the main benefits of using Swarm for decentralized content delivery?”

Architecture & Optimization Tips

Use Swarm manifests for structured data uploads and content referencing.
Integrate ENS (Ethereum Name Service) for human-readable content addressing.
Implement redundant nodes and backups to improve fault tolerance.
Combine Swarm with smart contract logic to automate file verification and payments.
Monitor Swarm performance using Prometheus or Grafana dashboards.

CTA

Ready to decentralize your storage infrastructure?
Hire pre-vetted Swarm developers from Lemon.io to build scalable, secure, and censorship-resistant distributed applications that leverage Ethereum’s decentralized ecosystem.

Get Matched with Swarm Developers

FAQ

What is Ethereum Swarm?: Ethereum Swarm is a decentralized storage and content distribution platform that allows users to store and share data across peer-to-peer networks, integrated with Ethereum smart contracts.
How is Swarm different from IPFS?: While both are decentralized storage systems, Swarm is deeply integrated with the Ethereum ecosystem and supports incentive-based data persistence through the BZZ token.
Can Swarm developers build dApps?: Yes. Swarm developers integrate decentralized storage with Ethereum dApps, enabling secure data storage and retrieval directly within blockchain-based applications.
Is Swarm suitable for enterprise use?: Absolutely. Swarm provides scalable, secure, and tamper-proof data storage ideal for enterprise-grade decentralized applications, data archives, and digital asset distribution.

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Why hire Swarm developers

A Swarm developer keeps your container setup simple, stable and easy to hand over.

Stack deployments

Compose files deployed as stacks with sane defaults.

Secrets and configs

Credentials managed by Swarm, not baked into images.

Node maintenance

Managers and workers patched without downtime.

Swarm to Kubernetes

A staged move when you outgrow Swarm.

Case studies

Aerospace

The experience with Lemon.io has been fantastic. The interview process has been good, the caliber of people – excellent and integration has been very smooth.

Marc HorowitzCOO of SkyFi

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Telecommunications

We needed extra developers to clean off all these bugs so the company could skyrocket.

Conor MackenDirector of Engineering

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We needed extra AI engineers to keep our ambitious project running.

Mike LukimanFounding Senior Software Engineer at Everstar.ai

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Frequently asked questions

Swarm developers can be found through many channels. First, you can participate in the community of developers and their forums on GitHub and Reddit, and obviously, there are groups on Swarm and blockchain. Second, you can go to blockchain conferences, webinars, and meetups, thus you will find people with the right skill set you need. Third, you can publish the offer on specific platforms like LinkedIn, Indeed, Glassdoor, etc. Freelance websites are also a great source of candidates. However, this is a very time-consuming process, particularly when searching for and vetting the right experts. Lemon.io gets you connected with pre-screened Swarm developers in just 48 hours, speeding up the whole process.

Lemon.io provides you with a no-risk, 20-hour paid trial with a Swarm developer for a great experience. Does the developer have the right skills for your project? In case you are completely satisfied and want to continue the cooperation, just subscribe. If the developer doesn’t fit perfectly, which is an unlikely case, we’ll connect you with another Swarm developer to better satisfy your needs.

Yes, there is a high demand for Swarm developers. The demand for Swarm developers has been on the rise because it is a high-level, powerfully expressive framework that aims at developing decentralized applications and smart contracts on the Ethereum blockchain. It gained wide popularity among corporate firms due to its capabilities of running distributed computing tasks in a very complex way and executing transactions very securely and transparently without any central control. Swarm is the best instrument for perfect data storage and retrieval. It is just the solution that highly secure and reliable applications need. Swarm developers are in high demand as the business world becomes more receptive to blockchain technologies’ ability to improve operational efficiency and build new solutions.

Lemon.io will match you with the best Swarm developers in under 48 hours. Our experienced recruiters and technical experts test all applicants on their resumes, soft skills, and technical skills. We know what we’re looking for, and we find it. Some even pass coding tests. We guarantee that only the top 1% of all applications will be accepted, so you can be sure you’ll get top-quality developers with ease.

Lemon.io guarantees a lightning-fast and seamless matching process. We pair you with a developer with the exact skills and experience your technology stack and expectations require. We also provide 1-2 perfectly matched candidates from our 1% top vetted talent pool. We vet all candidates through a triple-step process: a profile completion, a screening call, and a technical interview. In some cases, live coding is included. Try any developer at no risk for 20 paid hours. If you’re happy with the work, subscribe and continue forward, or hire directly to your team. If something goes wrong, we’ll find you another specialist. However, at Lemon.io, we pride ourselves on having a very low rate of replacements.

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