Senior Backend Engineer  

My Client is a start-up that is building a sweepstakes-based sports prediction market. That is based on Quantitative finance. They are looking for a backend software engineer to work on their web applications  

You will utilize advanced technologies in modern financial exchanges to promote transparent and efficient market practices in the future of sports betting. Depending on your familiarity with various components of our technology stack, you may focus on optimizing our infrastructure, data layer, networking, or application logic. Some of your tasks will closely align with frontend product development, emphasizing maintaining an exceptional user experience. 

Responsibilities: 

Build out a developer-first API experience for algorithmic trading integrations 
Scale up our real-time data ingestion and distribution pipelines 
Expand product features by extending modular service logic on top of existing core functionality 

What experience will you need: 


Bachelor's or Master's degree in Computer Science or related technical fields 
3+ years of experience developing distributed systems with cloud-based architecture 
Experience with a system programming language such as Rust, Go, C++ 
Understanding of tradeoffs between technical decisions and business requirements 
Strong leadership, problem-solving, and communication skills 
Comfortable working independently and with small teams covering a large surface area

Software developer

Senior Backend Engineer / Backend Engineer

Frontend Engineer – Trading Platforms & User Portals Location: London (Hybrid with flexibility) 
Type: Full-time | Sponsorship and relocation support available 

My client is a high-growth algorithmic trading firm at the forefront of the digital assets market. Founded in 2017, they have successfully navigated multiple industry cycles by combining the engineering precision of high-frequency trading firms with the agility and innovation of tech startups. 

To my client, digital assets are more than just another asset class — they represent a transformational shift in financial infrastructure. With a long-term vision and a commitment to regulatory compliance, they’re building the future of trading through cutting-edge technology. 

The Role My client is seeking a Frontend Engineer with a passion for crafting high-quality, intuitive applications that users genuinely enjoy. In this role, you’ll play a key part in developing both internal trading tools and external-facing portals, while working closely with experienced developers and traders. This is a unique opportunity to contribute to systems that directly impact trading operations while helping shape the overall product experience from the ground up. 

You’ll gain early responsibility, creative autonomy, and rapid learning opportunities — perfect for someone who enjoys fast-paced, high-impact environments. 

What You’ll Work On 
Build and enhance frontend applications for new trading products, client-facing portals, and internal trading tools 
Oversee frontend development for the corporate website and associated project management 
Collaborate across teams including product, marketing, trading, and engineering to ensure consistency and performance 
Play a key role in defining the user experience across multiple stages of the customer lifecycle 
Get exposure to algorithmic crypto trading and broader system architecture 
Experience with both personal and professional projects is welcome — an interest in algorithmic trading is a plus. 
Required Skills & Experience 
5+ years of frontend development experience 
Experience working on client-facing financial or professional services products is a plus (please share examples of products and their target users) 
Proficient with modern frontend tech stack: 
JavaScript, TypeScript, Node.js, npm 
Frameworks such as React (portfolio/examples encouraged) 
Solid understanding of web infrastructure: CDN, Cloudflare, and web server architecture 
Knowledge of frontend security best practices, including common vulnerabilities (XSS, CSRF, OWASP risks) and how to mitigate them 
Familiarity with frontend-backend integration (e.g., AJAX, asynchronous data handling) 
Ability to develop responsive and user-friendly layouts across devices 
What You’ll Get 
Join one of the most innovative trading firms in the world 
Projects with accelerated ownership and responsibility compared to traditional finance roles 
A dynamic team culture with regular meals, gaming nights, holiday celebrations, and annual company retreats 
A fully equipped central London office with amenities like table tennis, foosball, free snacks, and custom desk setups 
Informal, ambitious, and collaborative company culture with a professional startup vibe 
Performance-based compensation with strong earning potential, plus private health insurance and pension benefits 
Additional Details 
Not fully remote: While full remote work isn’t supported, my client offers significant flexibility in working from home and hours 
UK work permits and relocation support are available for qualified candidates

User interface developer

Front End Engineer

C++ Trading Platform Developer – Low Latency Systems & Infrastructure Location: London (Hybrid with flexibility) | Full-time | Sponsorship & Relocation Support Available 

My client is one of the world’s leading crypto-native algorithmic trading firms. Operating across nearly all major cryptocurrency exchanges and trading platforms, they provide deep liquidity solutions, a wide range of OTC services, and support for both cutting-edge blockchain projects and traditional financial institutions entering the digital asset space. They also invest in early-stage DeFi ventures through a dedicated investment arm. 

Founded in 2017 by industry leaders, my client has successfully navigated multiple market cycles and is deeply committed to long-term innovation in the crypto space. They combine the precision of high-frequency trading with the energy and experimentation of tech startups to create a forward-thinking, compliant, and powerful market presence. 

The Role My client is seeking a C++ Trading Platform Developer who’s passionate about low-level systems, large-scale infrastructure design, and performance optimisation. If you’re the type who enjoys diving under the hood to understand how things work — from how C++ standard libraries are implemented to the intricacies of data infrastructure — this role is for you. 

You’ll contribute to the development of the global trading platform, spanning multiple continents and exchanges, including real-time data capture, high-throughput order entry, robust connectivity, and built-in monitoring systems. You’ll work with C++ and Python to scale and enhance core infrastructure, alongside seasoned developers, traders, and the CTO directly. 

This is a high-impact role where you’ll enjoy early ownership, independent decision-making, and real-world performance challenges. No legacy systems, no red tape — your contributions are valued based on what you deliver. 

What You’ll Work On 
Expand and scale a global trading platform, including real-time data pipelines and exchange integrations 
Write robust, scalable, and performant code primarily in C++, with some Python 
Work on networking, order entry systems, low-latency optimisations, and infrastructure monitoring 
Design systems that are simple, effective, and fail-safe, with full Linux-based development environments 
Shape your role according to your strengths and interests — whether in system design, performance tuning, or low-level problem solving 
Required Skills 
Strong C++ skills – this will be tested during the interview process 
Ability to dig into C++ standard libraries and understand internal implementations – this will also be tested 
Excellent analytical and problem-solving skills 
Solid understanding of networking, CPU & memory models, and assembly language – highly desirable 
What You’ll Get 
Work at one of the most innovative algorithmic trading firms in the world 
Engage in high-impact projects with accelerated ownership and no bureaucracy 
Collaborate with sharp, experienced colleagues including direct access to the CTO 
A culture of continuous learning, where you grow by doing, at exceptional speed 
Flexible working arrangements based on productivity, not hours 
A central London office with amenities like table tennis, foosball, breakout zones, free food, and customised desks 
Informal, flat, and entrepreneurial company culture 
Performance-based compensation with significant earning potential, plus private health insurance and pension 
Additional Information 
Not fully remote: While the role is not fully remote, my client offers significant flexibility around work-from-home and working hours 
UK work permit sponsorship and relocation assistance are available for qualified candidates

C++ Trading Platform Engineer

Core Developer – Blockchain Protocol (Layer 1 Engineering) Location: Remote / Flexible | Full-time 

My client is a cutting-edge blockchain protocol engineering company on a mission to build decentralised financial market infrastructure that is more open, efficient, and resilient than the legacy systems that dominate today’s financial markets. 

With a bold vision to address “missing markets” in the real economy, my client is focused on enabling peer-to-peer trading and settlement in entirely new markets. Their technology supports digital assets that reflect real-world risk factors — from macroeconomic indicators to climate-related risks — making these risks tradable by anyone, anywhere, without reliance on traditional intermediaries. 

Founded in 2015, my client has been a champion of open-source development and remains deeply engaged in both blockchain and cryptography research communities. They are strong supporters of decentralised infrastructure initiatives and are currently the launch partner for Autonity — an EVM-based public blockchain designed for decentralised derivatives clearing. 

You can explore the Autonity project and its ongoing testnet initiatives at: 
https://autonity.org 
https://game.autonity.org 
https://docs.autonity.org 

The Role My client is seeking a Core Developer to join their Layer 1 Engineering team. This role is ideal for a systems programmer with strong knowledge of Layer 1 protocols and a passion for blockchain and decentralisation. 

You’ll be instrumental in the ongoing development of the Autonity protocol and its blockchain node client (a fork of go-ethereum), helping to ensure the platform is secure, performant, and a solid foundation for a new generation of decentralised financial markets. 

Key Responsibilities 
Implement new protocol features using Go and Solidity 
Develop distributed systems testing frameworks and test cases 
Contribute to protocol specifications and overall system design 
Collaborate with community members to troubleshoot and resolve issues 
Maintain high standards for code performance, correctness, and security 
Requirements 
Bachelor’s degree or higher in Computer Science or a related field 
Strong programming skills in Go, Rust, or C++ (ideally 2+ years with Go) 
Experience in network, concurrent, and distributed programming/debugging on Linux systems 
Good knowledge of: 

Ethereum protocols 
Byzantine Fault Tolerance (BFT) and Delegated Proof of Stake (dPoS) consensus 
Peer-to-peer messaging systems 
Cryptographic primitives 
Bonus Points 

Experience working on a blockchain node client (preferably Ethereum-based) 
Understanding of distributed systems theory through formal education or self-study 
Experience with smart contract development using Solidity and Web3 APIs 
What’s on Offer 

Competitive blockchain-sector compensation, based on experience and skill 
An opportunity to work on foundational Layer 1 infrastructure for the next wave of decentralised markets 
A collaborative, open-source driven culture working alongside pioneers in blockchain engineering

Other

Core Developer – Blockchain Protocol (Layer 1 Engineering)

C++ Developer – Options Trading Systems Location: London (Hybrid with flexibility) Type: Full-time | Sponsorship and relocation support available 
My client is a leading crypto-native algorithmic trading firm that provides liquidity across major cryptocurrency exchanges and platforms. With a strong presence in OTC trading and early-stage DeFi investment, they support high-profile blockchain initiatives and traditional financial institutions entering the digital asset space. 

Founded in 2017 by industry experts, My client has consistently adapted through various crypto market cycles. Their culture blends the engineering rigour of traditional high-frequency trading firms with the innovation and entrepreneurial spirit of modern tech startups. This organisation is deeply committed to the transformative potential of blockchain and is taking a leadership role in building a compliant and forward-thinking digital asset market. 

The Role My client is seeking an experienced C++ Developer to join their growing Options Trading team—one of the largest electronic desks in the crypto options market. In this hands-on role, you’ll collaborate directly with traders to build scalable, high-performance systems that span centralized and decentralized finance, as well as OTC markets. 

You’ll play a critical role in shaping system architecture, optimizing trading performance, and ensuring robust testing for mission-critical systems. 

Key Responsibilities 
System Architecture: Design and implement scalable, low-latency trading systems and strategies for crypto options. 
Performance Optimization: Continuously monitor and fine-tune the performance of trading systems for optimal execution speeds. 
Testing & Reliability: Contribute to the development of unit and integration tests to ensure system stability and reliability. Required Skills & Experience 
Strong proficiency in C++ and modern software development practices. 
Prior experience building trading platforms, ideally in a high-frequency trading (HFT) environment. 
Familiarity with market data feeds, order execution protocols, and exchange connectivity. 
Solid grasp of multi-threading, concurrency, and low-latency programming techniques. 
Excellent problem-solving and analytical skills. 
Bachelor's or Master’s degree in Computer Science, Engineering, Mathematics, or a related field. 
Experience with options trading or crypto markets is a strong advantage. 
What You’ll Gain 
Work at one of the most innovative trading firms in the world. 
Accelerated ownership and responsibility compared to traditional finance roles. 
Dynamic culture with team meals, holiday celebrations, gaming events, and annual retreats. 
A custom-designed London office featuring table tennis, foosball, personalized desk setups, a breakout area, and free snacks. 
Non-hierarchical, professional, and collaborative team environment with a startup energy. 
Performance-based compensation with high earning potential, plus private health insurance and pension. 
Additional Information Not fully remote: While full remote work isn’t supported, significant flexibility around working from home and working hours is offered. 
Visa sponsorship and relocation support are available for eligible candidates.

Delvin Moore Crane

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