HASH on cord

HASH

Technical Lead Engineering

External position
London, UK
Hiring internally for HASH?
Technology
Open-source data, modeling and generative simulation platform
Posted
2 weeks ago
Checked
cord regularly checks that external positions are still open
23 hours ago

Skills & Experience

Job roles: Technical Architect
Experience level: Senior, Lead
Core skills considered: Typescript, Rust, APIs, Agile, Scrum
Other skills considered: Technical Direction, Building Teams, Technical Writing, Software Architecture

Logistics

Base salary: £120K - £175K
Employment type: Permanent
Remote working: On-site
Visa sponsorship: Not available

Job Description

We're hiring a Tech Lead to own the architecture of almost everything built atop hgres. This includes our customer-facing frontend (the HASH "application"), integrations infrastructure, and distributed workflow execution, as well as the boundaries between these systems and hgres.

This is a player-coach role. You will be the senior technical owner for a broad and interconnected surface area, while helping the engineers working within it do the best work of their careers. You might spend one day designing fault-tolerant workflow execution, another reviewing a frontend architecture or a Rust service, and another writing a specification or having a 1:1 with an engineer.

You will be accountable for the coherence, reliability and evolvability of the architecture-not for personally writing every line of code. We expect you to remain hands-on when your involvement is the highest-leverage way to establish a pattern, resolve ambiguity, unblock the team or diagnose a difficult problem.

This is neither a pure engineering-management role nor an architect role detached from implementation. You should enjoy moving between systems design, code, written technical thinking and people leadership.


Requirements

  • Advanced or expert proficiency in both TypeScript and Rust, with experience shipping and operating substantial production systems in each
  • Advanced or expert knowledge of distributed systems, including state, consistency, concurrency, messaging, retries, idempotency, fault tolerance and observability
  • A track record of owning architecture across a complex product or platform, making good boundaries and trade-offs explicit rather than allowing systems to evolve by accident
  • Experience leading engineers through regular 1:1s, candid feedback, coaching and career development
  • Excellent written technical communication, including the ability to produce clear specifications, RFCs and architectural decision records
  • Strong judgment in design and pull-request review: able to distinguish consequential issues from preferences and raise the quality bar without becoming a bottleneck
  • Experience with event-driven or workflow systems, asynchronous execution, queues and distributed coordination
  • Strong understanding of modern frontend architecture and the operational systems that support a sophisticated web application
  • The ability to turn product goals and incomplete requirements into tractable technical plans, expose risk early and drive decisions to closure
  • High agency, intellectual honesty and a willingness to take responsibility for outcomes across team and system boundaries
  • Willingness to work with us in person from our London office

Experience with knowledge graphs, graph databases, connector or synchronization platforms, WebAssembly, or AI-assisted development is useful, but not required.


What you'll do

  • Own and evolve the technical architecture of HASH outside the hGraph core, including the frontend, application services, integrations infrastructure and Flows
  • Define clear interfaces between these systems and hGraph, working closely with hGraph's technical owners on cross-cutting decisions
  • Design for correctness and resilience across distributed workflows, connector execution, long-running operations, retries, failures and partial state
  • Write, maintain and drive alignment around technical specifications, RFCs, architectural decisions and implementation plans
  • Review designs and pull requests across TypeScript, Rust and frontend code, improving both immediate implementation quality and the team's shared engineering judgment
  • Establish pragmatic engineering standards for testing, reliability, security, observability, operability and maintainability
  • Hold regular 1:1s with engineers, provide direct feedback and coaching, support career development and help address performance issues early
  • Help engineers break ambiguous initiatives into clear milestones, owners, dependencies and risks, while preserving room for technical judgment
  • Remain close to the code: prototype critical paths, establish patterns, debug difficult cross-system failures and contribute directly when doing so unlocks the team
  • Improve incident response and operational learning, ensuring failures lead to better systems rather than recurring heroics
  • Partner with Product and Design to shape what we build, challenge assumptions and ensure plans reflect genuine technical constraints and opportunities
  • Participate in hiring and help build a team with high standards, complementary strengths and clear ownership
Technical Lead Engineering at HASH
Position posted 2 weeks ago

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Starling Bank on cord

Starling Bank

Full Stack Engineer (ML Ops)

London, UK
FinTech · Banking · Finance
A better bank for everyone
Active
over 6 months ago
Responds to
0% of requests
Responds in
1h 55m
Requests
7 pending

Skills & Experience

Job roles: Full Stack
Experience level: Mid, Senior
Core skills considered: Java, React, Redux, AWS, JavaScript

Logistics

Base salary: £70K - £110K
Employment type: Permanent
Remote working: Hybrid (up to 2 remote days p/w)
Visa sponsorship: Not available

Job Description

Starling is the UK’s first and leading digital bank on a mission to fix banking! Our vision is fast technology, fair service, and honest values. All at the tap of a phone, all the time.

Starling is the UK’s first and leading digital bank on a mission to fix banking! We built a new kind of bank because we knew technology had the power to help people save, spend and manage their money in a new and transformative way.

We’re a fully licensed UK bank with the culture and spirit of a fast-moving, disruptive tech company. We’re a bank, but better: fairer, easier to use and designed to demystify money for everyone. We employ more than 3,000 people across our London, Southampton, Cardiff and Manchester offices.

Our technologists are at the very heart of Starling and enjoy working in a fast-paced environment that is all about building things, creating new stuff, and disruptive technology that keeps us on the cutting edge of fintech. We operate a flat structure to empower you to make decisions regardless of what your primary responsibilities may be, innovation and collaboration will be at the core of everything you do. Help is never far away in our open culture, you will find support in your team and from across the business, we are in this together!

The way to thrive and shine within Starling is to be a self-driven individual and be able to take full ownership of everything around you: From building things, designing, discovering, to sharing knowledge with your colleagues and making sure all processes are efficient and productive to deliver the best possible results for our customers. Our purpose is underpinned by five Starling values: Listen, Keep It Simple, Do The Right Thing, Own It, and Aim For Greatness.

Hybrid Working

We have a Hybrid approach to working here at Starling - our preference is that you're located within a commutable distance of one of our offices so that we're able to interact and collaborate in person. We don't like to mandate how much you visit the office and work from home, that's to be agreed upon between you and your manager.

Our Data Environment

Our Data teams are excited about the value of data within the business, powers our product decisions to improve things for our customers and enhance effective and agile decision making, regardless of what their primary tech stack may be. Hear from the team in our latest blogs or our case studies with Women in Tech.

We are looking for talented data professionals at all levels to join the team. We value people being engaged and caring about customers, caring about the code they write and the contribution they make to Starling. People with a broad ability to apply themselves to a multitude of problems and challenges, who can work across teams do great things here at Starling, to continue changing banking for good.

Requirements

We have built our entire banking platform in house and mostly in Java. We are looking for people who want to work on building the tooling that is used by our engineers on a daily basis.

We are looking for people who are truly full stack, and are as comfortable polishing their javascript front end as they are debugging the innards of their java applications database interactions, or standing up infrastructure with terraform. We are looking for people who can:

  • Design REST apis.
  • Code backend services, ideally using Java, or another other server side compiled language.
  • Develop modern front ends, ideally using React and Redux.
  • Get their code into the cloud and support it there, ideally on AWS.
  • Believe in clean coding, simple solutions, automated testing and continuous deployment.
  • Like to take ownership of a feature from the original idea through to live.
  • Think (like us) that a small number of empowered developers is the right way to deliver software.

Company Benefits

  • 33 days holiday (including flexible bank holidays)
  • An extra day’s holiday for your birthday
  • 16 hours paid volunteering time a year
  • Part-time and/or flexible hours available for most roles
  • Salary sacrifice, company enhanced pension scheme
  • Life insurance at 4x your salary
  • Hybrid/remote working
  • Private Medical Insurance with VitalityHealth including mental health support and cancer care. Partner benefits include discounts with Waitrose, Mr&Mrs Smith and Peloton
  • Generous family-friendly policies
  • Varied social groups set up and run by our employees
  • Perkbox membership giving access to retail discounts, a wellness platform for physical and mental health, and weekly free and boosted perks
  • Access to initiatives like Cycle to Work, Salary Sacrificed Gym partnerships and Electric Vehicle (EV) leasing

Full details are available on our careers site

Interview Process

Interviewing is a two way process and we want you to have the time and opportunity to get to know us, as much as we are getting to know you! Our interviews are conversational and we want to get the best from you, so come with questions and be curious. In general you can expect the below, following a chat with one of our Talent Team:

  • Stage 1 - 30 mins with one of the team
  • Stage 2 - Take home challenge
  • Stage 3 - 90 mins technical interview with two team members
  • Stage 3 - 45 min final with an executive and a member of the people team
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