Builders x Devs

😅HIRING NOW ⚫️ Technical Support Engineer (API)

$4,000 – $6,000 / month | Remote | Full-time

#API #TechnicalSupport #Crypto #CEX #Web3

Gate.com — top-tier global CEX serving 50M+ users across spot, futures, and wealth management.

✦ Key Responsibilities:
— Support institutional clients on API integration, config, and troubleshooting.
— Investigate REST/WebSocket issues: auth, order placement, connectivity, error codes.
— Translate recurring client issues into structured product improvement proposals.
— Maintain and improve API docs, integration guides, and internal knowledge bases.
— Collaborate with Product, Engineering, and QA on new API features and launches.

✦ Requirements:
— CS/IT degree or equivalent technical background.
— Solid understanding of REST API, WebSocket, HTTP, and auth mechanisms.
— Strong root-cause analysis and structured problem-solving skills.
— Fluent English; able to communicate technical concepts to mixed audiences.
— Comfortable managing multiple client issues in a fast-paced environment.

✦ Nice to Have:
— Experience in crypto exchanges, fintech, or institutional trading support.
— Familiarity with spot/futures trading, order types, and account structures.
— Background supporting quant teams, market makers, or API traders.

📩 Contact: @Gate_Zack

🫡 ✦ @holder_job_devs

HIRING NOW ⚫️ QA Engineer (Desktop & Mobile)

$2,600+ / month (≈ 1M AMD) | Remote | Armenia

#QA #ManualQA #Desktop #Mobile #Windows #macOS #Unity #Remote

Cross-platform product team is looking for an experienced QA Engineer with a strong background in native desktop applications.

✦ Key Responsibilities:
— Test native Windows & macOS applications.
— Perform functional & exploratory testing.
— Validate installs, updates & compatibility.
— Test 3D content & application performance.

✦ Requirements:
— 5+ years of QA experience.
— Commercial Desktop QA experience (Windows/macOS).
— Strong manual testing skills.
— Experience with cross-platform products.

✦ Nice to Have:
— iOS / Android testing.
— REST API & SQL.
— Test automation experience.

📩 Contact: @Me_Polly

🫡 ✦ @holder_job_devs

Yo everyone 🤣
Hola!
Bonjour!
こんにちは!
Merhaba!
Aloha!

The jobs I find for this channel usually don’t make it to job boards.

So there aren’t many of them.

But… I think I found something 😆

👻👻👻 ⚫️ Middle Full-Stack TypeScript Developer (Web2/Web3 | React + Node.js)

$2,500+

Remote | Full-time

#FullStack #TypeScript #React #NodeJS #Web3 #gRPC #PostgreSQL #Redis #Remote

🔴IMPORTANT:

Forward the job posting when applying.

Product team building at the intersection of Web2 & Web3 is looking for a developer who can deliver features end-to-end — from backend architecture to frontend UI.

✦ Key Responsibilities:
— Build features end-to-end (proto → backend → UI).
— Design APIs (gRPC / REST) & data models.
— Develop React interfaces with strong typing.
— Work with PostgreSQL, Redis, NoSQL.
— Integrate Web3 (wallets, contracts).

✦ Requirements:
— Strong TypeScript + React (hooks, performance).
— Experience with Node.js / Bun.
— gRPC / ConnectRPC + Protocol Buffers.
— PostgreSQL + Redis fundamentals.
— Understanding Web3 basics (contracts, wallets).
— Experience with Git & Docker.

✦ Nice to Have:
— GraphQL, NestJS, WebSockets.
— CI/CD, testing (Jest/Vitest).
— Kafka / RabbitMQ, AWS/GCP.

✦ Soft Skills:
— Independent & ownership mindset.
— Strong communication & teamwork.
— Comfortable with code review.

✦ Conditions:
— Remote full-time.
— Product team & real impact.
— Fixed salary.

📩 Contact: @alena_h_h

🫡 ✦ @holder_job_devs

👻👻👻 Middle Android Developer (Kotlin | Web3 | Compose)

🔴IMPORTANT:

Forward the job posting when applying.

$4,200 – $6,000 | Remote | Full-time

#Android #Kotlin #Mobile #Web3 #JetpackCompose #Remote

Lagrange Labs is looking for an Android Developer to build and scale a mobile app connecting users to the Lagrange Web3 ecosystem.

✦ Key Responsibilities:
— Develop & maintain Android app for Web3 ecosystem access.
— Build modern UI with Jetpack Compose.
— Integrate mobile SDK for blockchain & ZK proofs.
— Secure key storage via Android Keystore.
— Optimize performance & energy consumption.
— Implement networking with Retrofit, Coroutines, Flow.

✦ Requirements:
— 3+ years commercial Android development.
— Strong Kotlin & Android SDK knowledge.
— Experience with MVVM / MVI architecture.
— Experience with cryptographic libs or Web3j.
— Solid Material Design & complex UI skills.
— Git + testing tools (JUnit, Espresso).
— Published apps on Google Play.

📩 Contact: @mura99hr


🫡 ✦ @holder_job_devs

😅 Web3 Software Developer (Fullstack | TypeScript | dApps)

$5,000 – $7,000 | Remote | Full-time

#Web3 #Fullstack #TypeScript #React #NextJS #Solidity #dApps #Remote

Lagrange Labs is looking for a Web3 Developer to build decentralized applications integrated with ZK co-processors and developer tooling for next-gen blockchain infrastructure.

✦ Key Responsibilities:
— Build full-stack dApps integrated with ZK infrastructure.
— Write bridge logic between smart contracts & UI.
— Implement blockchain interaction logic (client + server).
— Develop SDK & CLI tools for developers.
— Participate in full lifecycle: architecture → deploy → monitoring.

✦ Requirements:
— 3+ years software development experience.
— Strong TypeScript + React / Next.js.
— Experience with Hardhat or Foundry.
— Familiarity with Viem or Ethers.
— Basic Solidity smart contract experience.
— Ability to read чужой код & learn fast.

😹 Contact: @DavidDavis076

🔴IMPORTANT:

Forward the job posting when applying.

🫡 ✦ @holder_job_devs

My friends HIRING NOW 😹Backend Engineer (Go | Highload | Mining Infra)

$3,500 – $7,000 / month | Remote (US) | Full-time

#Backend #Golang #Highload #Kubernetes #Mining #Infrastructure #DistributedSystems #Remote

Luxor Technology — global Bitcoin mining infrastructure platform (pool, firmware, hardware, energy & financial tools in one ecosystem) is hiring a Backend Engineer.

✦ Role Mission:
Build and scale next-gen backend systems powering global mining operations.

✦ Key Responsibilities:
— Develop backend services in Go.
— Design high-concurrency, real-time systems.
— Handle long-lived TCP connections & workload distribution.
— Contribute to scalable architecture decisions.
— Operate production workloads in Kubernetes.

✦ Requirements:
— 3+ years backend engineering experience.
— Strong Golang proficiency.
— Experience with high-concurrency network services.
— Hands-on Docker & Kubernetes (deployments, scaling).
— Solid understanding of data structures & performance tuning.
— Comfortable in Linux environments.
— Experience with distributed & high-availability systems.
— English (written & reading).

📍 Timezone: UTC+8

🔴IMPORTANT:

Forward the job posting when applying.

📩 Apply: sam.takahashi@luxor.tech

🫡 ✦ @holder_job_devs

HIRING NOW ✅ Blockchain & AI Infrastructure Engineer (DevOps | GPU | K8s)

Apply only if you have relevant experience.
Don’t damage your reputation or others.

$4,000 – $6,000 | Remote | Full-time

#DevOps #Blockchain #AI #Kubernetes #GPU #ComputerVision #Infrastructure #Remote

NeuroVision — product company building AI + blockchain infrastructure solutions, is looking for a hands-on Senior engineer (not a manager) to work on high-load distributed systems.

✦ Key Responsibilities:
— Maintain blockchain & AI infrastructure environments.
— Work with GPU stack (CUDA, TensorRT).
— Manage bare-metal Kubernetes clusters.
— Support CV / biometric AI pipelines.
— Ensure stability, performance & reliability.

✦ Requirements:
— 6+ years experience (non-freelance).
— 1+ year with AI infra (CV / biometrics).
— 1+ year with blockchain infrastructure.
— 1+ year Nvidia GPU stack.
— 1+ year bare-metal K8s experience.
— Full-time only (no side jobs).

✦ Conditions:
— Fully remote.
— Salary growth review after 6–12 months.
— Official employment after probation.
— 28 vacation days + 100% sick leave pay.
— Accredited IT company.

📩 Contact: @Tany_Jobs

🔴IMPORTANT:

Forward the job posting when applying.

🫡 ✦ @holder_job_devs

HIRING NOW ✅ Chief Technical Officer (CTO | DeFi Perp-DEX | AI)

UPDATE:
$3,000+ | Remote

#CTO #Web3 #DeFi #Solana #Ethereum #AI #Architecture #Crypto #Remote

Ambitious startup building a next-gen decentralized perp-DEX on Solana + Ethereum with AI as a product layer. Fast execution, zero bureaucracy, direct access to founders & investors.

✦ Role Mission:
Define architecture vision, design system backbone, and set technical direction — focus on decisions, not coding.

✦ Key Responsibilities:
— Design full system architecture & module boundaries.
— Define MVP → scale roadmap with risks & dependencies.
— Create architecture docs, scheme & decision principles.
— Build security model, threat vectors & trust boundaries.
— Define governance, roles & emergency procedures.
— Design fail-safe mechanics & reliability assumptions.
— Architect secure integrations (oracle, cross-chain, RPC).
— Implement security-by-design principles.

✦ Requirements:
— Strong system architecture & domain decomposition skills.
— Experience designing complex Web3 / DeFi systems.
— Understanding perp-DEX modules (Trading, Risk, Oracle, etc.).
— Knowledge of Solana vs EVM architecture tradeoffs.
— Understanding latency, manipulation & oracle risks.
— Experience preparing systems for security audits.
— Ability to document architecture clearly.

✦ Conditions:
— Remote, flexible schedule.
— Crypto payments twice monthly.
— NDA required.

✦ Expected Results:
Month 1: architecture skeleton, system схемы, boundaries defined.
3–6 months: scalable architecture, stable MVP, fast onboarding, AI outside critical path.

📩 Contact: @stacccci

🔴Forward the job posting when applying.

🫡 ✦ @holder_job_devs

HIRING NOW ✅ Senior .NET Backend Developer (Crypto / Trading Platform)

$6,000 – $8,000 net | Remote | Full-time

#DotNet #Backend #CSharp #Highload #Crypto #Fintech #Trading #Remote

A high-load crypto exchange / trading platform (20k+ RPS) is looking for a strong .NET Backend Developer to build low-latency, mission-critical services.

✦ Key Responsibilities:
— Build high-performance microservices on C# / .NET.
— Develop low-latency REST API & WebSocket services.
— Ensure transaction security and system reliability.
— Work with PostgreSQL & MongoDB, optimize data layer.
— Write unit, integration, and performance tests.
— Participate in architectural decisions.

✦ Requirements:
— 7+ years of experience with .NET / C#.
— Proven background in high-load systems.
— Experience with low-latency, highly available services.
— Understanding of trading / fintech is a strong plus.

IMPORTANT:
🔴Forward the job posting when applying.

Location: Remote (GMT+4 timezone preferred: Europe, RF)
Contact: @Rita_RS


✅ ✦ @holder_job_devs

My HRiends are complaining that many candidates apply without actually reading the job details.

Quick ask to everyone here:

———- Please read the job descriptions carefully.
———- Apply only to roles that are truly relevant to your experience.

Let’s respect each other’s time 🫡

HIRING NOW 🔴 Senior Data Analyst (Snowflake )

#DataAnalyst #Snowflake #SQL #AWS #ETL #DataModeling #Healthcare #Remote

$3,000 – $4,000 / month | Remote

A global pharma-focused company is looking for a Senior Data Analyst to drive data-powered strategic and operational decisions in a high-impact environment.

✦ Job Description:
You’ll work with large-scale data in Snowflake, collaborate closely with business stakeholders, and turn complex datasets into actionable insights for decision-making.

✦ Key Responsibilities:
— Analyze and manage data in Snowflake environments.
— Partner with business stakeholders on strategic initiatives.
— Support operational and executive-level decision-making.

✦ Requirements:
— 5+ years of experience as a Senior Data Analyst.
— Strong expertise in Snowflake architecture & best practices.
— Hands-on experience with AWS.
— Advanced SQL skills and big data experience.
— Knowledge of data modeling, ETL, and data warehousing.
— Experience with data visualization tools.
— Basic understanding of pharmaceutical manufacturing.
— English level: B2 (technical).

✦ Nice to Have:
— Snowflake Certification.
— AWS Certification.

📍 Location: Global Remote (excluding RF & RB)
📩 Contact: @maria_aleshechkina

🔴Forward the job posting when applying.

🫡 ✦ @holder_job_devs

💙 Senior+ / Lead Python Developer

$5,000+ net

#Python #Lead #FastAPI #Crypto #iGaming #Remote #Highload

JT Marketing — a global Crypto iGaming product. Building high-load B2C platforms with a focus on scaling and top-tier architecture.

✦ Job Description: You will lead the backend team and take ownership of technical excellence. The role combines hands-on architecture design with team management and process optimization.

Key Responsibilities: — Lead the dev team and planning. — Design Python app architecture. — Manage code reviews and standards. — Support and develop CI/CD. — Mentor and hire new engineers. — Solve complex high-load issues.

✦ Qualifications: — 7+ years of Python experience. — 2+ years in Team Lead roles. — Expertise: FastAPI and SQLAlchemy. — Deep Postgres & MVCC knowledge. — Proficiency: Docker and Kubernetes. — Async and Multithreading mastery. — Clean Arch, DDD, SOLID expertise. — Russian language (C1+).

✦ Nice to have: — AWS, GCP, or Azure experience. — Kafka, Spark, and Big Data. — Prometheus, Grafana, Sentry.

✦ Benefits: — 100% remote (any location). — Flexible hours and schedule. — Stable salary linked to USD. — Hardware and tech provided. — 20 days paid vacation + sick leave.

Location: Remote
Contact: @recruiter_igaming_nda

🔴Forward the job posting when applying.

@holder_job_devs

Good day. 😎

My friends are looking for a strong Python Tech Lead.

I’ll post the job opening shortly 🤜🤛

HIRING NOW 🌟Team Lead (Node.js / React | Web3)

$4,000+ net (negotiable)

#TeamLead #FullStack #NodeJS #React #Web3 #Crypto #Highload #Remote

A top-tier international Web3 aggregator of crypto exchanges. The platform integrates thousands of tokens and finds the best market rates, focusing on security, high-load performance, and a seamless user experience.

✦ Job Description:
You will lead the entire dev team, bridging the gap between business goals and technical execution. Your role is to design scalable architecture, manage high-load backend services, and foster a strong engineering culture.

Key Responsibilities:
— Manage the full dev team and coordinate with the product/business side.
— Design FE/BE architecture and make key technical decisions.
— Develop and scale high-load services using Node.js and NestJS.
— Optimize frontend performance (React + MobX).
— Integrate new exchanges, Web3 providers, and external APIs.
— Manage DB optimization (PostgreSQL, Redis) and CI/CD pipelines.
— Conduct code reviews, mentor developers, and define the tech roadmap.

✦ Qualifications:
— 4–5+ years of experience in web development (Full-stack or Strong BE + Solid FE).
— Mastery of Node.js, TypeScript, and NestJS.
— Proven experience in team leadership and building dev processes.
— Strong React expertise (architecture, state management, rendering optimization).
— Expertise in PostgreSQL (query optimization) and high-load systems.
— Experience with DevOps (CI/CD, monitoring, logging).
— Location: Global Remote (excluding RF and RB).
— Plus: Direct experience in Web3 or crypto integrations.

✦ Benefits:
— Bi-annual salary indexation.
— 28 days of vacation + paid sick leaves.
— Global corporate retreats in different parts of the world.
— Budgets for education, conferences, and English classes.
— Compensation for coworking, sports, medical services, and therapy.
Location: Remote (Global, ex RF/RB)

Contact: @Xenia_Minenko

🔴Forward the job posting when applying.

🫡 ✦ @holder_job_devs

HIRING NOW: 🔴 Middle+ React Native Developer (E-commerce)

$6,000+ net

#ReactNative #TypeScript #Ecommerce #Mobile #Stripe #Remote

A scalable e-commerce product focused on speed, stability, and high-quality user experience for iOS and Android platforms.

✦ Job Description:
We are looking for a Middle+ developer to build core features and optimize application performance. You will be responsible for the full cycle of mobile development, from payment integrations to offline mode support.

Key Responsibilities:
— Develop core features: catalog, filters, cart, and checkout.
— Optimize performance using FlatList, FlashList, and image handling.
— Integrate payment systems: Stripe, Apple Pay, Google Pay, and Apphud.
— Manage analytics and A/B tests via Firebase and AppsFlyer.
— Implement and support offline mode functionality.

✦ Qualifications:
— Proven experience in e-commerce projects.
— Strong proficiency in React Native and TypeScript.
— Experience with state management (Redux Toolkit or Zustand).
— Familiarity with REST / GraphQL, FCM, and testing with Jest.
— Focus on clean code, attention to UX, and independence.

✦ Benefits:
— Fixed $6,000 salary (paid in USD / USDT).
— Fully remote work without time-trackers.
— Career growth opportunities to Lead positions.
— Dedicated budget for professional software and education.

Location: Remote
Contact: @demensdeum

🔴

Forward the job posting when applying.

🫡 ✦ @HOLDER_JOB_DEVS

✍️ Senior DevOps Engineer (High-Load / K8s)
5,500 – 6,500 EUR net

#DevOps #Kubernetes #ClickHouse #Kafka #GitLab #Cyprus #Relocation

TrafficStars — a global ad network processing 8bn events daily with 500+ servers and a 3.6 PB ClickHouse cluster.

✦ Job Description:
Support high-load infrastructure and production teams. You will manage k8s environments, maintain CI/CD pipelines, and ensure 24/7 service stability for massive global traffic.

Key Responsibilities:
— Support product dev team and manage GitLab CI/CD pipelines.
— Maintain helm-charts, kustomize, and production environments.
— Ensure system stability and implement infrastructure optimizations.
— Monitor and troubleshoot using Prometheus and ELK/EFK.

✦ Qualifications:
— Expert knowledge of Kubernetes and GitLab CI.
— Hands-on experience with Kafka, Prometheus, and ELK/EFK.
— Solid scripting skills and understanding of distributed systems.

✦ Preferred & Benefits:
— Experience with ClickHouse, PostgreSQL, or Aerospike.
— Relocation package for the family, visa support, and housing.
— Health insurance, gym, and school/kindergarten coverage.

Location: Limassol, Cyprus (Relocation)
Contact: @pollid8

🔴 Forward the job posting when applying.

🫡 ✦ @HOLDER_JOB_DEVS

✍️ Senior Backend Engineer (Node.js / TypeScript / Web3)
$4,500–$7,500 net

#Backend #NodeJS #TypeScript #Web3 #Blockchain #Solana


deBridge — a Web3 infrastructure company building decentralized products and backend services for blockchain applications. The team works at the intersection of Web3 integrations and high-load distributed systems.

✦ Job Description:
We’re looking for a Senior Backend Engineer to build scalable backend services powering decentralized applications. You’ll work with EVM and Solana blockchains, design off-chain infrastructure, and take ownership of production-grade systems used by a global user base.

Key Responsibilities:
– Integrate with EVM and Solana blockchains (ethers.js, web3.js, solana/web3.js).
– Process on-chain data, interact with smart contracts, index events.
– Build backend services and SDKs in Node.js / TypeScript.
– Work with PostgreSQL, MongoDB, Redis, Kafka, gRPC, ClickHouse, AWS, Kubernetes.
– Own production code: monitoring, debugging, incident resolution.
– Contribute to system architecture, code reviews, and engineering best practices.
– Collaborate with Protocol, Frontend, Data, and DevRel teams.

✦ Qualifications:
– 4+ years of backend experience with Node.js / TypeScript.
– Strong understanding of distributed systems, databases, messaging, and cloud infrastructure.
– Solid testing practices (Jest, Mocha, Sinon).
– CI/CD experience.
– Ability to deliver reliable, maintainable production code.
– Fluent Russian (internal communication), confident English (docs & technical discussions).

✦ Preferred Qualifications:
– Hands-on Web3 experience (EVM, Solana).
– Ability to read Solidity smart contracts.
– Familiarity with DeFi protocols.
– Experience with observability tools (Prometheus, Grafana, ELK).
– Background in other ecosystems (Go, JVM, C#, etc.).

Location: Remote (worldwide)
Contact: @leonety_lety

❗️ Forward the job posting when applying.

🫡 ✦ @HOLDER_JOB_DEVS

✍️ Senior Backend Ruby Developer (Crypto Banking / TON Ecosystem)
$4,000/month (net) + bonuses

#Backend #Ruby #Crypto #TON #Blockchain #Remote

Company:
CryptoBank TON — a crypto banking platform built on the TON ecosystem. The project focuses on financial automation, DeFi solutions, and deep blockchain integration, building high-load systems for secure and fast crypto banking.

✦ Job Description:
We’re looking for a Senior Backend Ruby Developer to build and scale the backend of a crypto banking product. You’ll work on high-load systems, TON blockchain integrations, and core financial infrastructure in a fast-growing Web3 project.

Key Responsibilities:
– Develop and maintain backend services in Ruby for crypto banking.
– Integrate with the TON ecosystem, Prisma ORM, and Neon (PostgreSQL).
– Optimize performance and ensure system reliability.
– Work with APIs using Hono and Vite.
– Design backend architecture, participate in code reviews, and collaborate with the team.

✦ Qualifications:
– 5+ years of experience with Ruby (senior level).
– Experience building and optimizing high-load systems.
– Strong understanding of algorithms, data structures, and fintech security.
– Hands-on experience with blockchain integrations.

✦ Preferred Qualifications:
– Knowledge of DeFi and TON smart contracts.
– Experience with JavaScript / TypeScript for frontend or integrations.

Location: Remote (any location)
Contact: @leo_lomaev

❗️ Forward the job posting when applying.

🫡 ✦ @HOLDER_JOB_DEVS

Hello achievers. 👉

I hope you are enjoying the New Year holidays.

I personally want to congratulate everyone on the start of the new year. May it bring strong career starts, clear decisions, and opportunities you will not want to postpone for later.

In the new year, I wish you to achieve at least one more goal than you planned. This year is yours.

And for now, it seems recruiters are not taking a break. New offers keep coming. Let’s keep moving forward.