cover image
Bitfinex

Senior Backend Developer - NodeJS (Remote Worldwide)

Remote

United Kingdom

Freelance

04-03-2025

Job Specifications

Bitfinex is a digital asset trading platform offering state-of-the-art services for digital currency traders and global liquidity providers.

Founded in 2012, Bitfinex was one of the first professional platforms set up to accommodate for the booming interest in cryptocurrency trading. Since then, our team has gained invaluable experience whilst cementing our spot as the go-to platform for digital asset traders and institutions.

Our Mission

Our aim is to create a free and accessible global digital economy by disrupting the current financial services industry.

Our team is entirely remote, composed of individuals with an ownership mentality; no one waits to be told what to do. Each member of the team is a highly motivated self-starter that is comfortable with autonomy and believes in lifelong learning. When we’re not working, we’re dreaming about it. We place our egos aside and thrive within a culture that fosters one another from the birth of a concept to launch of a product.

At Bitfinex you have the freedom to work as you please - all that matters is execution.

Join us and help lay the foundation for a decentralized future.

Tasks
As a senior Backend Developer, you will be a part of the team that works on the development of the backend components of all Bitfinex Services (main trading application, Bitfinex Pay, Lightning Network support, Blockchain integrations, ….). This includes:


New Products and Features - Bitfinex continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Bitfinex platform must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth. A good example are the renown Bitfinex API, the most solid, low-latency and complete in our industry.

Security - Bitfinex makes Security its most important feature. The Backend Development team is responsible for building all the API services and backend processes with the highest security principles and standard, in order to protect the safety of the entire user base


Requirements

6+ Years of experience with Node + JavaScript

Experience in the Crypto / Financial Sector

Familiar with microservices architecture

Have actively participated in the development of a complex platform

Good experience in interacting with databases (MySQL, MongoDB)

Ability to quickly learn new technologies

Good understanding of security practices


Nice to have:


Experience with blockchain integration

Comfortable with high-availability concepts

Ruby, Rust or C++ skills are a plus

Other technologies of interest: Message queues (Redis), Caches and Job Queues

About the Company

Bitfinex is a digital asset trading platform offering state-of-the-art services for digital currency traders and global liquidity providers. Founded in 2012, Bitfinex was one of the first professional platforms set up to accomodate for the booming interest in cryptocurrency trading. Since then, our team has gained invaluable experience whilst cementing our spot as the go-to platform for digital asset traders and institutions. In addition to a suite of advanced trading features and charting tools, Bitfinex provides access ... Know more

Related Jobs

Company background Company brand
Company Name
LHH
Job Title
Senior Software Engineer
Job Description
Contract Software Engineer - Defence SC/DV cleared (C, NI LabWindows/CVI, LabVIEW or LabVIEW FPGA) What you’ll do as a Software Engineer: Creation and delivery of software solutions within a defined work package area, ensuring that the package meets all stakeholder requirements Establish and mature stakeholder needs, associating/attributing priority, interest, influence and trading-off needs to determine optimum capability to solve stakeholders’ problems Create high quality and robust code; for fully documenting and recording your work products; keeping them under configuration management and providing plans and reports on progress to your line manager Work closely with internal and external stakeholders to ensure architecture alignment with other elements of the programme. Ensure the application of appropriate tools / techniques for test equipment design by the team, providing advice in own area of expertise Resolve emerging issues by proposing and driving through solutions, escalating more complex risks and supporting definition of opportunities and risk mitigation options Foster relationships and networks within and outside the line of business, actively seeking out opportunities and promoting a culture for adoption of best practice Develop, coach, mentor, teach, and upskill other engineers in the wider application of engineering What we are looking for: We realise that the “perfect candidate” doesn’t always exist. The only skill we need you to have is experience as a senior level software engineer. However, demonstrable experience in the following areas will help you stand out: A solid grasp of high level programming languages (C, NI LabWindows/CVI, LabVIEW or LabVIEW FPGA) Familiarity with TestStand Developing Low Level Drivers Developing software for test system environments Developing software within a development process framework Excellent communication, troubleshooting and problem solving skills Experience of Agile development and Atlassian toolset Familiarity with configuration management tools, defect tracking and peer review Strong interpersonal and collaboration skills, with an ability to influence and adapt according to changing demands Personal attributes and values are just as important to us as technical ability
Edinburgh, United Kingdom
On site
Freelance
03-03-2025
Company background Company brand
Company Name
Source Technology
Job Title
Senior Software Developer C# & C++
Job Description
Senior Software Developer - Financial Services Location: City of London, United Kingdom - Hybrid, 3 days in the office, 2 WFH Salary: up to £850 per day Duration: 1 year inital contract We're seeking a highly skilled Senior Software Developer to join one of the leading investment firms globally as a part of the engineering and development team. The ideal candidate will have extensive experience in software development with expertise in C# and C++. Additionally, experience with FX trading platforms is essential. Responsibilities Develop and maintain software solutions using C# and C++. Work on FX trading systems, ensuring high performance and reliability. Collaborate with cross-functional teams to design and improve financial software applications. Analyse and optimise existing codebases for better efficiency and performance. Ensure best practices in coding, security, and system architecture. Provide mentorship and technical guidance to junior developers. Requirements Proven experience as a software developer in the financial services industry. Strong proficiency in C# and C++. Experience working with FX trading platforms and financial instruments. Good understanding of multi-threading, low-latency systems, and high-performance computing. Strong problem-solving skills and ability to work in a fast-paced environment. Excellent communication and collaboration abilities. Bachelor’s degree in Computer Science, Software Engineering, or a related field. How to Apply: If you meet the above criteria, we'd love to hear from you. To apply please submit your CV and a cover letter outlining your relevant experience to Sadbh.o'connor@source-technology.com
London, United Kingdom
On site
Freelance
25-02-2025
Company background Company brand
Company Name
Wilson Brown
Job Title
Contract Principal Software Engineer | Typescript | Node | React | AWS | London
Job Description
Principal Software Engineer | Contract £650-750 | TypeScript | Node | React | AWS Day rate: £650-£750 Location: Central London 2 days pw Experienced Principal Software Engineers required by a global travel business! You will be leading a group of extremely talented engineers on a greenfield build, responsible for the design and development of several of the company’s core products. We are searching for Senior, Staff or Principal level software engineers. You will define the architectural vision, drive key technical decisions, and lead teams in building scalable, well-engineered software. This hands-on role involves designing, coding, and solving complex challenges. You will be working with a modern cloud-native stack, utilising AI, automation, and best-in-class engineering practices. Principal Software Engineer Requirements: Experience as a Senior, Staff or Principal level Software Engineer. Competent working across the full stack; TypeScript (Node.js & React), AWS (EKS, Lambda, Aurora RDS), Kubernetes, and GraphQL Experience designing large, distributed, data-driven, cloud-based products CI/CD, Infrastructure as Code, GitHub, Terraform, Helm Experience mentoring engineers at all levels Software architecture: systems that scale with high throughput! If you thrive on building, strategising, and collaborating with top talent, this role offers the space and responsibility to make an impact. If you want to work within a talented group of Engineers, then please apply now! Principal Software Engineer | Contract £650-750 | TypeScript | Node | React | AWS
London, United Kingdom
On site
Freelance
04-03-2025
Company background Company brand
Company Name
Foxley Talent
Job Title
Django & Wagtail Developer
Job Description
Python Developer with Django and Wagtail experience is required to support my client with a project launch for at least the next 10 weeks. The rate available is around £40-£50 per hour and the project can be completed remotely. Due to the quick turnaround with hiring, you will need to be able to present previous Wagtail projects you have worked on to be considered for this role. If you're available immediately and have Wagtail expertise, please get in touch for more details.
United Kingdom
Remote
Freelance
26-02-2025