DeFi Trading Engineer
London, UK
Full time
Office
Compensation is not specified
Role
Software Engineer
Description
Location: London or Zug
About us:
Founded in 2013, GSR is a leading market-making and programmatic trading company specializing in cryptocurrency trading. With global operations and an expert team, we offer liquidity solutions to various cryptocurrency ecosystems. We strive to provide exceptional service and tailored trading capabilities to our clients, building lasting relationships across both traditional and crypto markets.
Our team consists of seasoned professionals from renowned financial institutions, dedicated to developing cutting-edge trading platforms that cater to the unique demands of digital asset markets. Joining GSR means being a vital part of the dynamic cryptocurrency landscape.
About the role:
As part of the DeFi team, you will contribute to algorithmic trading activities across different blockchains. We are looking for a skilled DeFi Trading Engineer to enhance our trading strategies and develop new functionalities. The ideal candidate should possess a deep understanding of DeFi, blockchains, and prior experience in automated trading. You will collaborate with Quant Trading Team members and Engineers throughout the project lifecycle, from conception to implementation. This role involves both on-chain and off-chain coding to build secure, high-performing systems that operate reliably 24/7. Knowledge of DEXs, protocol mechanics, blockchain fundamentals, and smart contract security is advantageous.
Your responsibilities will include:
- Designing and implementing scalable software for on-chain systematic trading.
- Enhancing off-chain applications using languages like Rust to support pricing, order management, risk analysis, and monitoring.
- Developing smart contracts to facilitate efficient and secure on-chain execution.
- Collaborating effectively within a global team, emphasizing transparent communication and timely delivery.
- Staying updated on DeFi developments to identify opportunities and shape long-term strategies.
Your Qualifications/Attributes will include:
- Degree in Computer Science, Engineering, or relevant field.
- 2+ years of coding experience in a compiled language.
- Proficiency in web3 programming languages such as TypeScript, Python, or Rust.
- Strong problem-solving abilities and the capacity to work independently and collaboratively.
- Excellent communication skills to communicate technical concepts clearly and effectively.
- Detail-oriented mindset, with a focus on code quality, maintainability, and documentation.
Nice to have:
- Experience with non-EVM blockchains such as Solana, Cosmos, Aptos, or Sui.
- Knowledge of Docker and Kubernetes for containerization and orchestration.
- Proficiency in cloud computing and distributed systems.
What we offer:
- Transparent and collaborative work culture founded on Integrity, Innovation, and Performance.
- Competitive Salary with discretionary bonus payments.
- Benefits including Healthcare, Dental, Vision, Retirement Planning, holiday entitlement, and catered lunches (office-dependent).
- Regular team events and social activities.
- Corporate Social Responsibility program, charity fundraising initiatives, and volunteer opportunities.
GSR is an Equal Employment Opportunity employer, promoting a meritocratic approach in all aspects of recruitment and performance evaluation.
Skills Required
Gsrmarkets
Website
www.gsr.ioCompany size
Not specified
Location
United States
Description
Not specified
Sirex
On-Chain AI Analyst / Data Scientist
Full time
Remote
On-Chain AI Analyst / Data Scientist
Sirex (Fund + Portfolio)
Salary: $145,000 – $200,000 USD base + equity
Location: Remote-first
About the role
Turn on-chain data into alpha for AI agents, DeFi protocols and RWA investments. Build dashboards, anomaly detection and predictive models using real-time blockchain data.
What you’ll do
•Develop on-chain analytics pipelines (The Graph, Dune, custom indexers)
•Build AI models that predict protocol TVL, agent activity and RWA flows
•Create internal tools for investment thesis validation
•Research and publish insights on autonomous agent behavior on-chain
Requirements
•Strong Python + SQL + data science background
•Deep experience with blockchain data (Dune, Flipside, custom subgraphs)
•Familiarity with LLMs and agent systems
•Previous crypto research or trading experience
What we offer
•Direct influence on fund investment decisions
•Access to proprietary on-chain datasets
•Fast-track to senior research roles
Sirex (Fund + Portfolio)
Salary: $145,000 – $200,000 USD base + equity
Location: Remote-first
About the role
Turn on-chain data into alpha for AI agents, DeFi protocols and RWA investments. Build dashboards, anomaly detection and predictive models using real-time blockchain data.
What you’ll do
•Develop on-chain analytics pipelines (The Graph, Dune, custom indexers)
•Build AI models that predict protocol TVL, agent activity and RWA flows
•Create internal tools for investment thesis validation
•Research and publish insights on autonomous agent behavior on-chain
Requirements
•Strong Python + SQL + data science background
•Deep experience with blockchain data (Dune, Flipside, custom subgraphs)
•Familiarity with LLMs and agent systems
•Previous crypto research or trading experience
What we offer
•Direct influence on fund investment decisions
•Access to proprietary on-chain datasets
•Fast-track to senior research roles
Payment in Crypto
Sirex
RWA & Tokenization Protocol Engineer
Full time
Remote
Sirex Portfolio Companies
Salary: $155,000 – $220,000 USD base + equity + token package
Location: Remote-first
About the role
Build real-world asset tokenization protocols and compliant on-chain infrastructure for our RWA portfolio companies (real estate, carbon credits, invoices, treasuries).
What you’ll do
•Design and audit upgradeable smart contracts for RWA issuance, custody and compliance
•Implement cross-chain bridging, oracle integration and KYC/AML hooks
•Build tokenization SDKs and developer tools
•Work on regulatory-compliant mechanisms (ERC-3643, ERC-1400 style)
•Ship production protocols on Ethereum, Polygon, Arbitrum and Solana
Requirements
•4+ years Solidity + security experience (OpenZeppelin, audits)
•Deep knowledge of token standards and RWA primitives
•Experience with legal/compliance wrappers — strong plus
•Rust or Move experience is a bonus
What we offer
•Work on protocols that bring trillions in real-world value on-chain
•Direct collaboration with legal and regulatory partners
•High upside through protocol ownership and tokens
Salary: $155,000 – $220,000 USD base + equity + token package
Location: Remote-first
About the role
Build real-world asset tokenization protocols and compliant on-chain infrastructure for our RWA portfolio companies (real estate, carbon credits, invoices, treasuries).
What you’ll do
•Design and audit upgradeable smart contracts for RWA issuance, custody and compliance
•Implement cross-chain bridging, oracle integration and KYC/AML hooks
•Build tokenization SDKs and developer tools
•Work on regulatory-compliant mechanisms (ERC-3643, ERC-1400 style)
•Ship production protocols on Ethereum, Polygon, Arbitrum and Solana
Requirements
•4+ years Solidity + security experience (OpenZeppelin, audits)
•Deep knowledge of token standards and RWA primitives
•Experience with legal/compliance wrappers — strong plus
•Rust or Move experience is a bonus
What we offer
•Work on protocols that bring trillions in real-world value on-chain
•Direct collaboration with legal and regulatory partners
•High upside through protocol ownership and tokens
Payment in Crypto
Sirex
Senior Rust Engineer — Decentralized AI Compute & GPU Orchestration
Full time
Remote
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
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
Payment in Crypto
John Waldron
🚀 Hiring Solana Developers – Pump.fun
Montana City, USA
Montana City, USA
Full time
Remote
Solana Developer Needed – Pump.fun Style Platform (Starter Code Available)
Hi,
I’m reaching out from Valiant Solution LLC. We’re currently working with a U.S.-based client who is an experienced crypto professional and we’re looking for a skilled Solana developer to help build a platform similar to Pump.fun.
We already have a basic codebase from GitHub that the developer can start from, so the project will mainly involve customizing, improving, and completing the functionality rather than building everything from scratch.
Key requirements:
• Experience with Solana smart contracts (Rust / Anchor)
• Knowledge of token launch mechanics and bonding curves
• Experience with Solana Web3 integrations
• Ability to work with an existing codebase and extend it
If this sounds interesting, please reply with:
• Your Solana development experience
• Links to relevant projects or GitHub
• Your availability for a quick discussion
Looking forward to connecting.
Best regards,
Valiant Solution LLC
Hi,
I’m reaching out from Valiant Solution LLC. We’re currently working with a U.S.-based client who is an experienced crypto professional and we’re looking for a skilled Solana developer to help build a platform similar to Pump.fun.
We already have a basic codebase from GitHub that the developer can start from, so the project will mainly involve customizing, improving, and completing the functionality rather than building everything from scratch.
Key requirements:
• Experience with Solana smart contracts (Rust / Anchor)
• Knowledge of token launch mechanics and bonding curves
• Experience with Solana Web3 integrations
• Ability to work with an existing codebase and extend it
If this sounds interesting, please reply with:
• Your Solana development experience
• Links to relevant projects or GitHub
• Your availability for a quick discussion
Looking forward to connecting.
Best regards,
Valiant Solution LLC
Payment in Crypto
Sirex
Junior/Mid Decentralized Infrastructure Engineer
Full time
Remote
Role:
Help build and scale decentralized infrastructure: contribute to compute networks, protocols, storage layers, and orchestration tools that power AI agents and open digital systems. You’ll write code, run tests, fix bugs, and ship real features fast.
Skills & Requirements:
1–3 years in blockchain infra, distributed systems, or high-scale compute (or strong personal projects)
Solid Python / Rust / Go skills
Interest in libp2p, IPFS, GPU orchestration, or decentralized compute
Quick learner who ships clean code and loves performance/cost challenges
Salary:
$110,000 – $165,000 USD base + meaningful equity (portfolio startup) + full benefits + Sirex carry
Description:
Sirex.vc doesn’t just invest — we plug strong builders straight into our portfolio companies.
This is your chance to work on the real infrastructure behind autonomous agents and the open digital economy. Full support from the Sirex team, fast growth, zero bureaucracy.
High risk. Zero apologies.
Help build and scale decentralized infrastructure: contribute to compute networks, protocols, storage layers, and orchestration tools that power AI agents and open digital systems. You’ll write code, run tests, fix bugs, and ship real features fast.
Skills & Requirements:
1–3 years in blockchain infra, distributed systems, or high-scale compute (or strong personal projects)
Solid Python / Rust / Go skills
Interest in libp2p, IPFS, GPU orchestration, or decentralized compute
Quick learner who ships clean code and loves performance/cost challenges
Salary:
$110,000 – $165,000 USD base + meaningful equity (portfolio startup) + full benefits + Sirex carry
Description:
Sirex.vc doesn’t just invest — we plug strong builders straight into our portfolio companies.
This is your chance to work on the real infrastructure behind autonomous agents and the open digital economy. Full support from the Sirex team, fast growth, zero bureaucracy.
High risk. Zero apologies.
Payment in Crypto