About GFX Labs

At Oku, we aim to close the gap between the CeFi and DeFi trading experiences. It is no mistake that 95% of crypto trading occurs on centralized platforms like Binance and Coinbase since their organizations have spent substantially more time and resources investing in their trading interface, while DeFi has primarily been focused on infrastructure and protocols for the last several years.

However, that is going to change soon. While CeFi organizations enjoy their Web2 stack, a Web3 company like Oku can leverage the composability of the DeFi ecosystem and blockchain technology to offer a high-quality trading experience that will eventually be indistinguishable from CeFi and, in the long run, overcome their legacy systems. That is why Oku has 50+ partners in or supporting the app.

Oku initially started as a project within GFX Labs after they received a $1.6M grant from the Uniswap Foundation in October 2022 to build and launch a reimagined trading interface, analytics platform, and API for Uniswap v3. After ten months of development, Oku launched in July 2023, and since then, Oku has supported the DAO Uniswap’s efforts to expand across new blockchains.

Today, our primary feature is our smart order routing system, which integrates 12+ order routing systems to ensure all users find the best price possible. We have also adapted our order routing technology to offer a bridge aggregator with 11+ integrated bridges. Most recently, to close the CeFi/DeFi gap further, we added on/off-ramping with USD and EURO to our interface at an industry-low fee of free! Our other popular features include trustless onchain limit orders built directly on Uniswap v3, our position manager page for users who want to manage their LP positions, and our Uniswap v3 analytics.

Over the coming years, Oku will be expanding the scope of our offering and improving the quality of our user experience.

Why work at Oku?

Any firm can pay a high salary and offer good incentives (as will we), but most can’t offer interesting, challenging, and rewarding work.

We have something to prove. Our team is young and hungry. We like to move fast and make things. We know when to double down and when to cut our losses. We are going to make mistakes, and we are going to build a better product because of them. We don’t micromanage or have a huge team of product managers. We want self starters who take charge and solve problems.

We don’t care if you went to school, what grades you got, or your age. Show us what you have built, what problems you have solved, and what skills you have.

About the role

As a Software Engineer at Oku Trade, you’ll work alongside our engineering team to maintain and improve both our backend services and frontend applications. This role offers the opportunity to work on meaningful projects with real impact while growing your skills across our technology stack.

You’ll contribute to core components of our platform, including APIs, data processing routines, blockchain indexing, on-chain interactions across EVM chains, and React-based user interfaces. Working closely with senior engineers, you’ll have the space to implement improvements and tackle challenging problems that directly affect our users.

Key Responsibilities:

• Develop and improve backend APIs in Golang and Node.js that handle high-throughput blockchain data and serve real-time market information
• Work with EVM blockchain data, including parsing transaction logs, decoding smart contract events, and maintaining indexing services that track on-chain activity
• Enhance our React frontend applications, focusing on performance optimization and user experience improvements for DeFi interfaces
• Implement features across both backend and frontend, ensuring seamless data flow from blockchain to user interface

You might be great for this role if you have:

• 2+ years of Golang development experience with strong backend engineering skills
• Hands-on experience with Web3 development, particularly working with EVM chains and understanding concepts of transaction indexing, MEV, and DeFi protocols
• Strong React skills with experience building responsive, data-heavy interfaces
• Enthusiasm for diving deep into complex systems and learning new technologies
• Desire to grow your skills by working on challenging problems across the stack

What you’ll do at Oku.Trade:

• Work on critical infrastructure that processes millions of blockchain transactions daily while implementing new features to expand our capabilities
• Contribute to improving our blockchain indexing architecture and API design as we scale to support more chains and protocols
• Collaborate with a small team where your work has a visible impact on the product
• Gain experience with production systems that thousands of users rely on daily

We’d love to hear from you if you’re excited about:

• Growing your engineering skills by working on real-world blockchain challenges
• Contributing to systems that make DeFi more accessible and understandable
• Working in a collaborative environment where you can learn from experienced engineers while making meaningful contributions
• Building your expertise at the intersection of traditional web development and blockchain technology

Tools we are using today:

• Golang, React, Node, Figma
• Postgresql, Temporal, NATS, Clickhouse
• Gitlab and Github
• DigitalOcean, fly.io, Kubernetes, KNative, Pulumi

About CoW DAO

CoW DAO is on a mission to protect Ethereum users from MEV and optimize trade execution across DeFi. We achieve this through the CoW Protocol, CoW Swap (a leading intent-based DEX aggregator), and the innovative MEV Blocker, which together help secure, aggregate, and route trades for optimal outcomes. We also fund values-aligned projects via the CoW Grants Program.

CoW Protocol is consistently ranked among the top DEX aggregators by monthly volume and is the largest intent-based exchange. Our MEV Blocker protects trades from harmful MEV extraction and is integrated across the Ethereum ecosystem. The CoW AMM is the only live AMM designed to protect liquidity providers from LVR (loss-versus-rebalancing).

With over 100 open-source repositories on GitHub, we’re transparent, community-driven, and deeply committed to the open-source ethos. Our real-time Dune Analytics dashboard showcases billions in cumulative trading volume and a rapidly growing user base. As we continue to scale, CoW DAO remains at the forefront of DeFi innovation, prioritizing security, efficiency, and decentralization.

Learn more

• Location: Fully remote (Preference for Europe or remote ±4 hours CEST)
• Contract Type: Full-time contractor
• Note: Please note we are not hiring from the US, Australia, or New Zealand

About the role

At CoW DAO data plays a central role in how we understand on-chain activity and operate our fair combinatory auction system.

We’re looking for a Data Engineer who’s excited to dive deep into blockchain data (Ethereum and other L1/L2s), enrich it with insights from our off-chain auction system, and build the pipelines and infrastructure to support operations and analytics. This is a hands-on role where you’ll work across teams, design scalable systems, and make high-quality data accessible and actionable across the organization.

If you thrive in a fast-moving environment, love working with complex datasets, and want to shape the data foundation of a leading DeFi protocol, we’d love to hear from you.

What you’ll do

• Collaborate with teams across the company to understand their data needs and provide actionable insights
• Design, build, and maintain robust data pipelines and infrastructure for ingesting and processing on-chain and off-chain data
• Ensure data quality, reliability, and discoverability through testing, monitoring, and documentation
• Create tools and systems that make it easy to access, query, and visualize data (using tools like Redash, Metabase, or Looker)
• Keep an eye on the evolving blockchain data ecosystem—experiment with new tools and techniques to stay ahead
• Own your work end-to-end: from initial idea to deployment and maintenance

Who you are

• Solid experience designing and maintaining scalable data architectures (data lakes, warehouses, pipelines)
• Strong coding skills in Python and SQL
• Comfortable working with blockchain data providers and APIs (e.g. Dune, Etherscan, CoinGecko)
• Familiar with decoding Ethereum transactions and simulation tools (e.g. Tenderly, Phalcon)
• Experience with modern data orchestration frameworks (Dagster, Airflow, or Prefect)
• You write clean, tested, and well-reviewed code and follow best practices for deployment and monitoring
• You’re a self-starter, collaborative, and not afraid to take ownership

Nice to Have

• Familiarity with cloud platforms (AWS, GCP, etc.)
• Previous experience in a startup or high-growth environment
• Experience contributing to or using open-source data/analytics tools in the Web3 space

## What We Can Offer You

• Flexible work environment: Join our hub in Lisbon whenever you want or work remotely
• Token plan: Have a stake in our mission and shape the future of CoW DAO
• Periodic gatherings: Meet your teammates in person during regular team retreats
• Conference allocation: Stay up to date with the latest in Web3 using our conference budget
• Learning budget: Support for personal and professional development
• Hardware budget: Set yourself up with the tools you need
• Flat hierarchies: Have more ownership and less red tape
• Flexible time off: Balance your personal and work life
• Make an impact: Your contributions directly influence the direction and success of the protocol
• Growth: Take initiative, own projects, and accelerate your learning and growth

Referral Program

Earn 4,000 USDC/USD through our refer-to-earn program. More details here

Culture

Life within the CoW Protocol is an incredible adventure! We take pride in our collaborative approach, embracing autonomy and fostering a culture of big thinking and continuous growth. We value impact, ownership, simplicity, and team spirit. Plus, we’re all about feedback, coming together, and enjoying the journey along the way!

At CoW Protocol, we strive to create a space where everyone feels included and empowered. We believe that our products and services benefit from our diverse backgrounds and experiences. All qualified applicants are considered for positions regardless of race, ethnic origin, age, religion or belief, marital status, gender identification, sexual orientation, or physical ability.

About aPriori

aPriori is an MEV infrastructure and liquid staking protocol, designed for the parallel execution era and natively built on Monad. We are building the foundational infrastructure for the next era of decentralized finance, helping stakers, protocols and validators maximize yield with transparency and efficiency. Our team is composed of experts in high-performance trading, DeFi protocols, distributed systems, and blockchain infrastructure.

The Role

We’re looking for a strong Senior or Staff Backend Engineer passionate about solving complex problems with high-performance solutions. You will play a pivotal role in our journey from testnet to mainnet, with significant ownership in all stages from design, development, deployment, and maintenance. You’ll work closely with a highly experienced, crypto-native team to architect and implement performant backend systems.

What You’ll Do

• Design, build, and maintain scalable, mission-critical backend services and APIs powering liquid staking, mev infrastructure and other foundational DeFi systems
• Work on high-performance systems that interact with blockchain networks in real-time
• Collaborate with smart contract engineers, frontend engineers, and leadership to ship end-to-end features
• Contribute to technical decisions and engineering culture across the stack, including system architecture and design patterns

What We’re Looking For

• 4-10 years of backend software engineering experience in one of the following: Golang, Rust, C/C++, Python, Java, Node.js
• Experience in designing, developing, and maintaining scalable, high-performance backend systems and public-facing APIs
• Experience in managing and optimizing databases like PostgreSQL to ensure data integrity, enhance performance, and achieve scalability
• Excellent communication and collaboration skills
• Strong sense of ownership and a passion for driving complex technical decisions
• Ability to move fast and ship software to production with rapid iteration
• Academic background from a top-tier university and/or experience at a well-regarded technology company is a strong plus.

Nice to Haves:

• Experience in building backend systems interacting with blockchains
• Experience designing and developing liquid staking solutions, dexes and/or mev infra in production
• Knowledge of blockchain infrastructure, validator clients and p2p networking
• Deep knowledge of DeFi legos

Why Join Us

• Work at the frontier of crypto and DeFi infrastructure
• Join a tight-knit, low-ego team with deep technical chops
• Competitive compensation, bonus and token upside
• Fully remote, flexible work culture