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From the employer's careers site First seen 26 Oct 2026 · Still live on 31 Oct 2026

Senior Back End Engineer I

Thought Machine Lisbon Hybrid senior full-time

Salary

€75K – €100K per year

Apply on Thought Machine

Description

Thought Machine's mission is to rid the world's banks of legacy technology by developing modern banking foundations through core and payments technology that run natively in the cloud.

As a Senior Software Engineer I at Thought Machine, you will own and deliver highly complex, end-to-end engineering work items. You will look beyond immediate coding tasks to consider long-term system architecture, product strategy, and client outcomes.

In this role, you will act as a technical anchor for your team, solving ambiguous problems, guiding less experienced engineers, and actively shaping our technical and product roadmaps.

Responsibilities

Technical Leadership
  • Design and build highly reliable, secure, and scalable software solutions for complex problems.
  • Contribute to team guidelines ensuring our services meet top-tier security, performance, cost, and reliability standards.
  • Set a high bar for code quality by providing constructive, detailed feedback on design documents and pull requests.
  • Investigate issues across multiple services in production, drive learning from operational incidents, and feed improvements back into our prioritisation process.
  • Actively participate in our growth by leading technical interviews.
Product & Delivery
  • Own work items from initial concept to production, creating structured delivery plans, managing dependencies along the way and owning delivery of these work items.
  • Partner with Product Managers to prioritize features, translate client requirements into technical specifications, and ensure solutions align with our overarching product vision.
  • Confidently own the resolution of incidents, coordinating mitigation, fixes, and post-mortem artifacts.
Collaboration & Mentorship
  • Mentor and support less experienced engineers, helping them level up technically and adapt to Thought Machine’s engineering philosophy.
  • Translate highly technical problems and architectural decisions into clear concepts for non-technical stakeholders.

Requirements

  • Strong proficiency in modern backend languages (ideally Go or Python) and experience building distributed, cloud-native systems (Kubernetes, AWS/GCP, gRPC, PostgreSQL).
  • A proven track record of breaking down ambiguous, and complex problems into clear, deliverable milestones.
  • Experience supporting high-throughput systems in production environments and diagnosing complex issues across distributed systems.
  • A highly collaborative, feedback-receptive mindset focused on finding the best outcomes for our clients and business rather than defending personal preferences.
  • Excellent written and verbal communication skills, with the ability to build consensus and document technical designs clearly.

Benefits

  • Highly competitive salary
  • Voluntary Pension Plan (match up to 5%)
  • Private Healthcare Insurance
  • Comprehensive Life Insurance
  • 25 days holiday plus public holidays
  • Two charity days a year
  • Daily Meal Allowance
  • Access to outstanding learning materials and courses
  • Sports and hobby clubs, subsidised by Thought Machine
  • All the latest tech you need
  • Huge range of healthy (and not-so-healthy) snacks, smoothies and drinks
  • A talented and experienced team as your colleagues
  • An environment where we encourage learning and progress

Skills

Required

Ready to apply?

You apply with the employer directly. Their original posting is here: https://jobs.ashbyhq.com/thought-machine/9edc9cc4-d14f-48da-ba19-188b3719d716

Apply on Thought Machine