As a Principal Software Engineer in our Investment Growth Tribe, you’ll be a senior technical leader, playing a key role in our technology transformation. This is a strategic role, where you’ll shape and communicate high-level architectures, set clear and supportive guardrails, work on POCs with teams, support them during challenging times, and empower engineering teams to deliver high-quality, data-driven solutions. It’s about influence, clarity, and enabling teams to thrive – with a focus on being approachable, engaged, and collaborative.
What You’ll Be Doing
- Define and document high-level solution architectures, clearly outlining trade-offs, risks, and dependencies.
- Provide clear architectural principles and best-practice guidelines that empower teams to design excellent solutions.
- Foster a culture of data-driven decision-making, defining cross-team metrics that support continuous improvement.
- Promote strong documentation practices, including Architectural Decision Records, Solution Memos, and C4 diagrams.
- Guide cloud architecture choices, particularly around container orchestration and the use of AWS services.
- Champion best practices for observability, logging, security, and networking.
- Identify opportunities to enhance Developer Experience and efficiency through smarter tooling and frameworks.
- Support engineering teams with mentoring, pairing, and skills development.
- Lead conversations around Event-Driven Architecture, cost forecasting, and designing for the future state.
- Partner with Product and Engineering Managers to align priorities and delivery approaches.
Essential
- Demonstrated leadership in legacy technology transformation.
- Strong expertise in modern architectural patterns, cloud-native design, and container orchestration.
- Skilled communicator able to influence and engage at every level of the organisation.
- Proven ability to balance trade-offs, costs, and technical constraints.
- Experience coaching teams towards engineering and architecture best practices.
- Deep understanding of design patterns, security, networking, observability, and system flows.
- Adept at producing clear, concise architectural documentation.
Tech stack
- TypeScript / React / Node.js / Terraform
- AWS: Kubernetes / ECS / Docker / Lambda / SQS / DocumentDB
Desirable
- Previous experience as a Solution or Enterprise Architect.
- Background in enterprise systems and legacy-to-modern transitions.
- Familiarity with PHP and/or Java
- Understanding of Developer Experience optimisation tools and frameworks., Full-time, with hybrid working, a minimum of 2 days in our Bristol office.
Here at HL, we’re the UK’s number 1 investment platform for private investors, based in Bristol. For more than 40 years we’ve helped investors save time, tax and money on their investments.
We believe we have a workplace like no other, with constant learning, dynamic teams, and a great ethos. We’re steered by core values that promote service, quality, innovation, and opportunity in everything we do.
Benefits
- Discretionary annual bonus and annual pay review
- 25 days holiday plus bank holidays and 1-day additional Christmas closure
- Option to purchase an additional 5 days holiday
- Flexible working options available, including hybrid working
- Enhanced parental leave
- Pension scheme up to 11% employer contribution
- Income Protection and Life insurance (4 x salary core level of cover)
- Private medical insurance
- Health care cash plans – including optical, dental, and outpatient care
- Health screening programme
- Help@hand – confidential support including mental health counselling and remote GP
- Wellhub – unlimited access to fitness providers and wellness coach sessions
- Variety of travel to work schemes with bike storage and shower facilities
- Inhouse barista and deli serving subsidised coffee and sandwiches
- Two paid volunteering days per year
- dependant on role level
- only available to select during our annual benefits window, in November each year
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