Senior Test Engineer
Jito Labs is at the forefront of developing high-performance distributed systems on Solana. We are known for our work on Jito-Solana, a leading MEV Solana client, and the groundbreaking Jito Block Engine that has transformed block building on Solana. Currently, Jito-Solana operates on 88% stake with 1,100 validators, generating an additional $370M revenue for network stakeholders.
Join our team of dedicated engineers and operators passionate about tackling intricate technical challenges in Solana trading and infrastructure. As a profitable startup with established market fit, we have the resources to address ambitious technical projects while maintaining agility. Our team culture prioritizes ownership, fast execution, technical excellence, and sustainable growth.
If you are enthusiastic about solving complex distributed systems issues, working with cutting-edge MEV and trading infrastructure, contributing to open-source blockchain tech, and making a significant impact in the rapidly growing L1 blockchains landscape, we encourage you to apply.
Our focus extends beyond building tools - we are shaping the future of high-performance distributed systems, directly influencing the Solana ecosystem for enhanced network speed, capital efficiency, and robust DeFi applications.
We offer a competitive compensation package, substantial equity, and the chance to work on impactful challenges. It's an opportunity to contribute to building the future of blockchain technology alongside our team at Jito Labs.
Position Overview
We are looking for a skilled Senior Test Engineer to join our core team developing critical next-generation infrastructure for Solana. Your role involves accelerating engineering progress by ensuring that deployed code meets performance, reliability, and compliance standards. You will work closely with Jito Labs’ core engineers and other client teams, collaborating to build high-value testing frameworks tailored to Solana’s tech stack and ours.
Responsibilities
- Collaborate with core engineers to tackle fast-paced challenges and create monitoring/testing infrastructure.
- Set up and dismantle Solana clusters.
- Develop synthetic load testing strategies for Solana clusters and Jito's core stack.
- Design testing frameworks to provide impactful tests for new code developed by core engineers.
Preferred Backgrounds
The Jito Labs engineering team comprises multi-disciplinary engineers with backgrounds in fields such as Embedded Systems, Firmware, Operating Systems, Robotics, and HFT. Relevant experience in these areas can be beneficial.
Requirements
- 5+ years of systems-level programming (C, C++, or Rust)
- Strong focus on progress in testing
- Readiness to delve into complex systems to pinpoint and address issues
- Proficiency in synthetic load testing and traffic replay
- Eager to learn and great communication skills
- Proactive approach and a keen interest in decentralized finance and high-performance systems
- Expected salary: $175,000 - $200,000 per year with competitive equity compensation
Frontend Engineer – Web3 Products
Sirex Portfolio Companies
Salary: $120,000 – $175,000 USD base + equity
Location: Remote-first
About the role Build beautiful, high-performance frontends for DeFi, RWA and agent platforms (Next.js + Wagmi/Viem stack).
What you’ll do
Ship trading interfaces, dashboards and wallet flows
Optimize for mobile and lightning-fast UX
Integrate with smart contracts and oracles
Work directly with design and product teams
Requirements
3+ years Next.js / React + TypeScript
Strong experience with Wagmi, Viem, RainbowKit or similar
Web3 product intuition (wallets, transactions, gas UX)
Apply → Send CV + GitHub
Senior web3 engineer
We’re building a SocialFi platform combining real estate and DeFi. After launching our MVP, we’re now progressing to version 2.
Role:
Join our remote team to develop website, smart contracts, integrate blockchain features, and ensure platform security.
Responsibilities:
- Develop and deploy smart contracts on Ethereum or Layer 2.
- Integrate wallet connect and decentralized features.
- Collaborate and direct contribute with frontend/backend teams.
- Conduct security audits.
Requirements:
- Experience with React, Ethers.js, Web3.js.
- Familiarity with wallet extensions and DeFi protocols.
- Ability to fix errors within 1 hour during tests.
- Comfortable working independently in a remote setup.
Nice to Have:
- Knowledge of cross-chain protocols or cryptography.
- Experience in social finance or real estate blockchain projects.
Application:
Send your resume and Linkedin profile. Selected candidates will do a quick coding test.
Contact: contact@hubsai.net
Join us to help shape the future of SocialFi!
Recruiter, Marketer, Advertiser, Business Developer
Open roles
- Marketer
- Business Developer
- Recruiter
- Advertiser
Requirements
- Clear natural English communication without translators or AI
- Professional fast and reliable
- Fluent in your native language
If you want to be part of something early and actually make an impact — reach out
Senior Rust Engineer — Decentralized AI Compute & GPU Orchestration
Sirex Portfolio Companies
Salary: $170,000 – $240,000 USD base + meaningful equity + token package
Location: Remote-first (any timezone)
About the role
We’re building the next layer of decentralized compute for AI agents — GPU orchestration, libp2p networking, verifiable execution and on-chain coordination. Join one of our high-conviction portfolio companies or work directly with the Sirex infra team.
What you’ll do
•Design and ship production Rust services for distributed GPU clusters and agent orchestration
•Build libp2p + IPFS-based peer discovery and data exchange layers
•Implement verifiable compute primitives (zkML, TEE, or on-chain proofs)
•Optimize for cost, latency and fault tolerance at scale
•Collaborate with AI teams on autonomous agent deployment
Requirements
•4+ years Rust (production experience mandatory)
•Strong background in distributed systems, networking or blockchain infra
•Experience with libp2p, IPFS, GPU compute (CUDA/ROCm) or TEEs — big plus
•Deep understanding of AI agent workloads
What we offer
•Direct impact on core infrastructure that powers multiple portfolio companies
•Top-tier equity + token upside
•Fast growth to Staff/Principal level
•Work with the best AI + crypto teams in the space
Junior / Middle Metaverse Developer (Unity / Web3 / VR)
You will work with Unity, WebGL, and blockchain technologies to create engaging metaverse features and optimize them for performance across different devices. The developer will collaborate with designers and backend engineers to deliver scalable and stable products.
Requirements include experience with Unity and C#, understanding of 3D development, Web3 or blockchain basics, and familiarity with Git and API integration. Experience with VR/AR, NFTs, or multiplayer systems is a plus.
We offer remote work, flexible hours, crypto payments, and the opportunity to build innovative metaverse products.