Senior Implementation Engineer

Yapily Ltd; City Of London; Hybrid; GBP 80,000 - 100,000; Full time

Job summary

A financial technology company in London is seeking a Senior Implementation Engineer to lead enterprise integrations with their API. This role requires strong technical skills and the ability to communicate complex concepts to clients effectively. The ideal candidate will have a history of working with the payments industry and a solid understanding of API integration processes. Competitive compensation and a hybrid working model are part of the offer, along with comprehensive benefits.

Benefits

Competitive Pay & Equity

Generous Time Off

Hybrid Working

Nomad Working

Private Medical Insurance

Mental Health Support

Learning Budget

Cycle to Work Scheme

Referral Scheme

Monthly Socials and Team Events

Qualifications

• Strong technical foundation and hands-on coding experience.
• Experience with API integration and SaaS solutions.
• Proven experience leading implementations with enterprise customers.

Responsibilities

• Lead enterprise customers through complex integrations with Yapily’s API.
• Identify and resolve integration challenges.
• Collaborate with product and engineering teams for successful delivery.

Skills

Technical coding skills

Excellent communication skills

Troubleshooting skills

Project management

Understanding of REST APIs

Education

Technical background or education

Tools

Java

Python

JavaScript

Job description

Who are Yapily

Why we exist, and where we’re headed:

Our Mission: Redefining how the world interacts with value.

Our Vision: A world without financial friction

Our Purpose: To empower everyone to access and move value

Yapily is on a mission to enable innovative companies to build better and fairer financial services for everyone through the power of open banking. We’re looking for a Senior Implementation Engineer to join our Customer Engineering Team.

This role is ideal for someone with a strong technical foundation, hands-on coding experience, and exceptional communication skills, especially when guiding enterprise customers through complex technical integrations.

As a Senior Implementation Engineer, you will lead enterprise customers through complex integrations with Yapily’s API, combining strategic guidance with deep technical execution. You will identify and resolve integration challenges, and work with a broader Yapily team on tailored solutions that align with the requirements of sophisticated, enterprise-scale organisations. Acting as a senior technical authority, you’ll support sales cycles with expert insight, lead advanced workshops, deliver tailored demos, and serve as a trusted advisor throughout the full implementation lifecycle. You will collaborate closely with Customer Success, Product, and Engineering to drive successful delivery, resolve technical challenges, and ensure ongoing customer success - ultimately becoming a subject matter expert in the Yapily API and its enterprise capabilities.

Join us on our journey and help build the future of finance. 🚀

Experience In:

• Payments Industry or Open Banking - desired
• Experience with API integration and implementation of SaaS solutions
• Proven track record in leading Implementations with large Enterprise customers
• Proven experience writing and maintaining code, with hands-on programming skills relevant to API integration
• Understanding Clients’ use cases and advise most suitable integration practices
• Managing the full implementation cycle end-to-end, to the point they launch
• Strong troubleshooting skills for identifying and resolving technical issues quickly
• Helping our clients speed adoption and ensure best practices during implementation
• Collaborating in various additional projects such as maintaining our API documentation
• Comfortable in delivering technical presentations & product demonstrations to prospective clients and senior stakeholders

What we expect from you:

• A strong work ethic and a proactive, can-do attitude
• Excellent verbal and written communication skills, with the ability to explain technical concepts to non-technical stakeholders
• Confidence in speaking publicly and leading workshops with enterprise client teams
• Excellent time management and independent prioritisation skills in the best interest of our clients
• Provide technical recommendations on how to orchestrate, test, optimise and understand prospective customers’ software builds
• Ability to collaborate with cross-functional teams and managing multiple enterprise accounts effectively
• Able to write, review, and debug code as part of end-to-end API integration
• Ability to stay up to date with open banking regulations, industry trends, and emerging technologies
• Communicate important customer product feedback to Product Marketing, Product Management and Customer Success and Engineering teams
• A strong technical background through education or professional experience
• Comprehensive understanding of REST APIs

We would love you to have:

• Hands-on experience coding in one or more modern programming languages (e.g., Java, Python, JavaScript)
• Familiarity with back-end development practices, API-driven architectures, and enterprise integration pattern
• Experience delivering compelling demos, solution walkthroughs, and technical workshops - especially to enterprise clients
• Prior experience in fintech, payments, or the Open Banking ecosystem
• The ability to speak one or more additional European languages is desirable

🌟 Why You’ll Love Working With Us

• Competitive Pay & Equity – We offer a great base salary plus equity, so you’ll own a part of what we’re building together.
• Generous Time Off – Enjoy 25 days of holiday each year (plus bank holidays if you’re in the UK), and earn an extra day each year after your first, up to 5 more!
• Hybrid Working – Life’s about balance. you can work from home up to 3 days a week, eligibility criteria applies.

• Nomad Working – Feel like a change of scenery? Work from anywhere for up to 30 days each year.

• Family First – We offer enhanced Maternity and Paternity leave because your family matters
• Private Medical Insurance – You’ll get top-notch cover through BUPA, because your health is a priority.

• Mental Health Support – Access personalised mental wellness support through our award-winning partner.
• Future-Ready Perks – Including a solid company pension, life assurance, and income protection.
• Learn & Grow – A £200 annual budget for learning and personal development. Invest in you!
• Cycle to Work Scheme – Commute the healthy way with support from our cycle to work programme.
• Refer a Friend – Bring someone great onboard and earn £1,000 with our referral scheme.
• Team Vibes – Monthly socials, team lunches, and a budget to hang out and have fun (yes, pizza included 🍕).
• Office Snacks & Doggies – Daily snacks to keep you going, and yes – we’re proudly a dog-friendly office 🐾.

Our Values

We obsess about quality

• Our customers have entrusted us with a critical function in a regulated industry…and we take that responsibility seriously. We always assume ownership and hold ourselves accountable.

We are curious

• Our innovation is powered by our collective growth mindset. We’re lifelong learners who challenge assumptions, experiment, and iterate.

We act with integrity

• We’re guided by our mission and earn and maintain trust by doing what’s right, even when it’s not easy.

We are do-ers

• We reject indifference and agility is our strength.
• We’re motivated by challenges, and biassed towards action.

We problem-solve together

• We’re diverse people in diverse places, and know the best solutions are born out of collaboration. We win, lose, and learn…together.