Senior Engineer - London/Belgrade

Sokin; City Of London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A next-generation financial services provider is seeking a Senior Full Stack Engineer to join their team in London. In this role, you will lead the engineering lifecycle, primarily focusing on backend development while also contributing to frontend efforts. The ideal candidate will have over 5 years of experience, possess strong technical skills in Python and AWS, and be adept at mentoring junior team members. This is an exciting opportunity to influence technical direction and drive high standards in a rapidly expanding company.

Qualifications

• Minimum of 5 years of professional software engineering experience.
• Experience managing both development and operational aspects of software.
• Strong ability to translate business requirements into technical solutions.

Responsibilities

• Own the full lifecycle of software engineering, from design to maintenance.
• Collaborate with teams to shape and refine feature requirements.
• Lead architectural decisions ensuring scalable solutions.

Skills

Software engineering experience

Python

Flask

FastAPI

AWS

Angular

React

SQL databases

CI/CD pipelines

Communication skills

Education

Bachelor’s degree in Computer Science or related field

Job description

Senior Full Stack Engineer

We are looking for a passionate Senior Engineer who wants to join our growing team, helping us to transform and scale our payments platform.

This role will involve ownership of the entire engineering lifecycle from concept to production and release, being involved primarily in backend development with contribution to the frontend as well.

As a Senior team member you will have influence with technical direction, work collaboratively with stakeholders and drive high standards for code quality and performance. To help us drive success and achieve business goals you will be responsible for designing, building, deploying and maintaining new long-term features and services that are both scalable and reliable.

About Us
Sokin is a next‑generation B2B financial services provider, enabling businesses to make and receive global payments with greater speed, lower cost, and total transparency.
Our mission is simple: we’re simplifying global business - so businesses thrive wherever they choose to grow. We deliver services across:

• Global payments and receivables
• Foreign Exchange (FX)
• Treasury management
• Finance reconciliations

We are rapidly expanding, with established presence in EMEA, APAC, and North America, backed by a strong global infrastructure and industry‑leading partners, we are redefining how businesses move money worldwide.

Our clients span industries from sports and entertainment to logistics and travel, and our community is growing rapidly. As we continue to expand, we’re building a team of exceptional people who share our ambition to transform the future of global payments.

Key Responsibilities

• Own the full lifecycle of software engineering, from initial design and development through deployment, monitoring, and maintenance in production.
• Collaborate with PMs, designers, and cross‑functional teams to shape and refine feature requirements, ensuring alignment with business and user needs.
• Lead architectural decisions, ensuring that solutions are scalable, maintainable, and aligned with industry best practices.
• Drive the operational success of features by establishing monitoring, alerting, and support processes to ensure reliability and responsiveness.
• Mentor and guide junior developers, fostering a culture of ownership, accountability, and continuous improvement within the team.
• Participate in code reviews, ensuring that team members adhere to high standards for quality, security, and performance.
• Actively engage in troubleshooting and incident response to address production issues, continually learning from these experiences to improve future resilience.
• Design, develop, and maintain full‑stack applications using Python, Flask, FastAPI, AWS, Angular, React and SQL databases.
• Optimize application performance, troubleshoot and resolve complex technical issues.
• Stay current with industry trends and emerging technologies, advocating for their application when they benefit the organization.

Required Qualifications

• Minimum of 5 years of professional software engineering experience, with a proven track record of end‑to‑end feature ownership and delivery in production environments.
• Familiarity with modern frameworks, cloud platforms, and CI/CD pipelines that support full lifecycle engineering.
• Strong ability to translate business requirements into technical solutions that are scalable and maintainable.
• Experience managing both the development and operational aspects of software, with a focus on performance, reliability, and scalability.
• Excellent communication skills with the ability to effectively collaborate across technical and non‑technical stakeholders.
• A proactive mindset for identifying potential improvements, optimizations, and innovations.
• Prior experience in a senior role with responsibilities for mentoring or guiding other team members.
• Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent experience).

Please note, candidates will need to have the right to work in the jurisdiction that they are looking to work in.

Sokin is an equal opportunities employer and committed to maintaining an inclusive work environment. As a growing global startup with bases across multiple countries, we were established on and continue to promote an agile, flexible working culture. Please reach out to discuss any accommodations you may require during the recruitment process.