Principal Software Engineer

Accelero; Greater London; Hybrid; GBP 80,000 - 100,000; Full time

Benefits offered by this job

4x salary life assurance

Pension

Virtual GP

Job summary

Accelero is looking for a Principal Engineer (Java) to join their team in London. This hybrid position requires experience in financial services and a strong technical background across multiple product teams.

The ideal candidate will have a passion for mentoring others and experience in SaaS FinTech, using technologies such as Java, Kotlin, and AWS. Along with a competitive benefits package, this role offers opportunities to shape the technical direction of the company.

Qualifications

• At least 2 years as a Principal Engineer, Architect or equivalent.
• Experience with Java and Kotlin on AWS.
• Strong understanding of SQL and NoSQL databases.

Responsibilities

• Act as the technical authority across multiple product teams.
• Mentor and grow engineers.
• Engage as a strategic voice with senior stakeholders.

Skills

Java

Kotlin

AWS

SQL

NoSQL (Postgres, MongoDB)

Spring

React

Temporal

Job description

Principal Engineer (Java) | London (Hybrid) | FinTech

Financial services experience is essential for this one.

We're working with a B2B FinTech disrupting the SME lending market. Their SaaS platform is used by over 80 high street banks, challenger banks and specialist lenders to power smarter credit decisioning.

They're hiring a Principal Engineer to act as the technical authority across multiple product teams. Part hands‑on builder, part mentor, part strategic voice with senior stakeholders.

What they're after:

• At least 2 years as a Principal Engineer, Architect or equivalent
• Java and Kotlin on AWS
• SQL and NoSQL (Postgres, MongoDB)
• Frameworks like Spring, React, Temporal
• SaaS in FinTech, with a solid grasp of data governance
• A genuine passion for mentoring and growing engineers

The setup:

• Hybrid, offices in Shoreditch, London
• A few days a month on site or with clients
• 4x salary life assurance, pension, virtual GP and more

No visa sponsorship available on this one.