Junior Backend Developer

Axion Capital Ltd; Greater London; Hybrid; GBP 23,000 - 27,000; Full time

Benefits offered by this job

Stock options

Job summary

Axion Capital Ltd in London is seeking a junior software engineer to help build payment software and open banking solutions. You will work with a team to write, test, and debug scalable code and integrate API services for fintech platforms.

The role offers a start-up style environment, office at Canary Wharf and hybrid work from home. Suitable for graduates with interest in fintech and open banking; strong problem-solving and collaboration are valued.

Qualifications

• Formal CS/SE certificates are preferred but not required.
• Open Banking knowledge is a plus.
• Strong problem-solving and attention to detail.
• Experience with API integrations and software development practices.
• Excellent communication and collaboration, able to work independently or in a team.

Responsibilities

• Assist in the development and maintenance of payment software and open banking solutions.
• Write, test, and debug clean, efficient, and scalable code.
• Collaborate with cross-functional teams to design and implement new features and enhancements.
• Support the integration of APIs for payment processing and financial data handling.
• Participate in code reviews and contribute to improving coding standards and practices.
• Help troubleshoot, debug, and upgrade existing software systems.
• Stay updated on emerging trends and technologies in the fintech space.

Skills

Open Banking

API integrations

Problem solving

Communication

Team collaboration

Education

Bachelor’s degree

Bootcamp certification

Tools

APIs

Databases

Job description

• Join our team and gain exposure to emerging technologies and challenges across a network of finance and digital asset oriented companies.
• Work in an innovative environment specialising in Open Banking, digital currencies, and finance.
• Collaborate with a team of experienced developers to create scalable and secure applications.
• Gain hands‑on experience in the rapidly evolving field of financial services and digital asset technology.

Role Duties:

• Assist in the development and maintenance of payment software and open banking solutions.
• Write, test, and debug clean, efficient, and scalable code.
• Collaborate with cross-functional teams to design and implement new features and enhancements.
• Support the integration of APIs for payment processing and financial data handling.
• Participate in code reviews and contribute to improving coding standards and practices.
• Help troubleshoot, debug, and upgrade existing software systems.
• Stay updated on emerging trends and technologies in the fintech space.

What We Need From You:

• Any formal certificates in Computer Science, Software Engineering, or a related field (e.g., Bachelor’s degree, Bootcamp certification, etc.) are preferred but not required.
• Understanding of Open Banking principles and fintech applications is a plus.
• Strong problem‑solving skills and attention to detail.
• Strong knowledge of API integrations and software development practices.
• Excellent communication and collaboration skills.
• Ability to work both independently and as part of a team in a fast‑paced environment.
• A passion for innovation and continuous learning in financial technology.

Technologies We Use

• APIs: Binance, OKX, HTX, TrueLayer, Plaid, Sumsub
• Databases: SQL Server, MongoDB

What we offer:

• Salary/Wage: £23,000 - £27,000
  + Stock options [Depending on relevent experience and qualifications]
• Be a part of a start‑up pioneering in its industry
• Office Hours: 09:30 – 15:30, Monday – Thursday
• Transparent and friendly working environment
• Work location: London Canary Wharf Office, Work from home

Axion – Redefining Crypto Infrastructure

Axion Capital Ltd (Company No. 15632219) is a company registered in England and Wales.Axion Exchange Sp. z o.o. (KRS No. 0001141842) is a company registered in the Republic of Poland and is authorised to provide virtual asset services under registration number RDWW-1696 issued by the Dyrektor IAS w Katowicach.

All regulated crypto activities are carried out solely by Axion Capital Ltd’s licensed subsidiaries and/or authorised partners. Axion Capital Ltd does not itself engage in the provision of such activities.

37th Floor

One Canada Square

Canary Wharf, London

United Kingdom

E14 5AA

Piotrkowska 116 / 52

90-006 Lodz

Republic of Poland

Registered Office

Axion Capital Ltd and its affiliated entities do not engage in, provide, promote, or advertise any products or services that constitute regulated activities in jurisdictions where they are not duly licensed or authorised to do so. This includes, but is not limited to, virtual asset services and investment services.All information on this website is provided for general informational purposes only and does not constitute legal, financial, or investment advice. Products and services mentioned may not be available in all jurisdictions. Users are responsible for complying with all applicable laws and regulations in their local region.