Elliptic on cord

Elliptic

Senior AI Product Engineer

External position
London, UK
Hiring internally for Elliptic?
Blockchain · RegTech · Data
Detect And Prevent Criminal Activity In Cryptocurrency
Active
over 6 months ago
Posted
2 months ago
Checked
cord regularly checks that external positions are still open
18 hours ago

Skills & Experience

Job roles: AI Engineer
Experience level: Senior
Core skills considered: Blockchain, APIs, Typescript, Node.js, REST
Other skills considered: Technical Direction, Regression Testing, AWS, ECS, S3

Logistics

Base salary: Undisclosed
Some companies on cord are unable to disclose salaries publicly due to internal company policies. Message the company for salary information.
Employment type: Permanent
Remote working: Hybrid (up to 3 remote days p/w)
Visa sponsorship: Not available

Job Description

Elliptic is hiring a Senior AI Engineer to join our AI team. It is the team behind Elliptic's copilot, the AI product that helps compliance investigators trace fund flows, surface patterns, and respond to risk in real time. This role sits at the centre of that work, designing the agentic systems, LLM integrations, and backend services that turn complex blockchain data into useful answers. You'll join a focused team that cares about the quality of what it builds and gives you the space to do your best work. There's real ownership here, breadth across AI and backend systems, and the freedom to turn good ideas into shipped products. The problems are technically challenging, and the work is visible.


Responsibilities

  • As a Senior AI Engineer on the AI team, you'll own significant parts of the Agentic stack that power Elliptic's copilot.
  • You'll lead the design of agentic workflows, drive technical decisions on how we build and operate LLM-based features, and help raise the engineering standard across the team.
  • You'll partner with product, web engineers, and your engineering lead to take complex problems from ambiguity to shipped product, and you'll mentor more junior engineers as the team grows.

What you will do:

  • Design and build agentic workflows and AI-powered features that power Elliptic's copilot, using LLM frameworks such as LangChain or LangGraph.
  • Lead the design of agents, tool integrations, and retrieval pipelines that turn complex blockchain data into useful answers for investigators.
  • Build and own evaluation frameworks that measure and improve the quality, reliability, and latency of LLM outputs.
  • Design and build the backend services, APIs, and event-driven systems that support these features, using TypeScript and Node.js.
  • Drive technical design reviews and architecture decisions for AI workstreams.
  • Mentor and coach more junior engineers through pair programming, code review, and design feedback.
  • Raise the engineering bar across the team by promoting good practices in testing, observability, and AI system reliability.
  • Influence cross-team decisions on how AI capabilities integrate with the rest of the Elliptic platform.

What you will achieve in the first 6 months:

  • Owned and shipped at least one significant AI capability end-to-end, from ambiguous problem statement through to production.
  • Driven the technical direction of an AI workstream, including architecture, evaluation, and rollout.
  • Established or improved at least one team practice for building AI systems (evals, observability patterns, prompt management, rollout safety).
  • Mentored junior engineers on AI engineering practices and contributed to their growth.
  • Built strong working relationships across product, web engineering, data engineering, and DevOps.
  • Started to influence adjacent teams on how Elliptic builds with AI.

You will be a great fit here if you:

  • Care about building AI systems that work reliably in production, not just demos.
  • Have strong instincts for trade-offs specific to LLM systems: cost vs latency vs quality, deterministic vs probabilistic behaviour, when to use an agent vs a workflow.
  • Can take ambiguous AI problems and break them into shippable pieces with clear evaluation criteria.
  • Communicate clearly with non-engineers (product, stakeholders, leadership) about AI capabilities and limitations.
  • Have coached or mentored other engineers and enjoy raising the bar through reviews, pairing, and feedback.
  • Are genuinely curious about the domain and find blockchain investigations and financial crime prevention interesting.

Our ideal candidate has:

  • 5-8+ years of software engineering experience, with at least 1-2 years of meaningful production work building LLM-powered features.
  • Direct experience with LLM frameworks such as LangChain, LangGraph, or similar.
  • Hands-on experience building agentic systems: tool use, multi-step reasoning, planning, memory, and human-in-the-loop patterns.
  • Practical understanding of prompt engineering, structured outputs, context management, and managing the trade-offs of working with LLMs.
  • Experience building and running evaluations for LLM outputs (eval sets, LLM-as-judge, regression testing).
  • Strong backend skills in TypeScript / Node.js, with solid API design.
  • Cloud experience (AWS: Lambda, ECS, S3, or similar).
  • Database proficiency across SQL (Postgres) and some NoSQL exposure.
  • Demonstrated ability to mentor and coach other engineers.
  • Uses AI coding assistants (Copilot, Cursor, Claude, etc.) critically and effectively as part of their day-to-day workflow.

Bonus points for:

  • Experience with retrieval-augmented generation (RAG) and vector databases (pgvector, Pinecone, or similar).
  • Experience designing multi-agent systems and agent orchestration patterns.
  • Familiarity with LLM observability tools (LangSmith, Langfuse, Arize, or similar).
  • Experience working with multiple model providers (Anthropic, OpenAI, open-weight models) or with fine-tuning.
  • Hands-on experience with Terraform, Kubernetes, or infrastructure-as-code tooling.
  • Experience with observability platforms like Datadog.
  • Distributed or event-driven architectures (SNS, SQS).
  • Interest in cryptocurrency, blockchain, or compliance.

Company Benefits

  • Share Options
  • Holiday - 25 days + public holidays
  • Enjoy your birthday off work
  • Elliptic Sabbatical: enjoy up to 3 months off after being with us for 4 years (of which 1 month is full paid)
  • Private Health Insurance - we use Vitality!
  • Work Pension Scheme
  • Quarterly full-day off-sites&annual company 3-day offsite
  • $1000 Personal training budget&LinkedIn Learning subscription
  • £500 Home office allowance
  • Enhanced parental leave; we provide eligible employees, regardless of gender or whether they become a parent by birth or adoption, 16 weeks fully-paid leave and job-protected leave
  • Full access to Spill Mental Health Support
  • Our offices provide all of the amenities you could need
  • Work with top of the range equipment - MacBook Pro and any other equipment you need
                      We know Diversity and Inclusion is much deeper than just hiring, but it’s important for us to mention it here. We welcome and embrace individuals of all backgrounds and identities at Elliptic, and this is an ongoing priority for us. We know incredible people don’t all think in the same way. We want to be challenged every day. We believe our diverse team of individuals underpins this by bringing creative thinking and innovation to Elliptic every day. We are committed to creating a diverse, inclusive and equitable workplace, so we welcome applications from everyone, even if you may not think you fit all of the requirements of our roles. We foster an environment of psychological safety, where everyone feels comfortable to bring their whole self to work.
                      Senior AI Product Engineer at Elliptic
                      Position posted 2 months ago

                      Talk directly
                      to who's hiring

                      cord intros you to the companies worth joining, from seed to enterprise.

                      Everything you need to find work

                      Surface every relevant position, direct message the people hiring and manage all your applications in one place.

                      Get started

                      Every position in one place

                      We index the web for open positions that might be relevant to you and bring them all in one place.

                      Positions you might like split into tabs based on their type

                      Direct messaging

                      No more CV blackholes. Message people hiring directly and see their activity live on cord.

                      A sent message to a hiring manager
                      A board of positions in different stages

                      Application management

                      Manage all your applications and interviews in one place.

                      Advanced insights

                      Know your worth and see how you compare with other applicants.

                      Visualisation of a profile match score for a position and score comparison with other applicants

                      Direct.
                      Transparent.
                      Human.

                      On cord you can message people hiring directly, see when they were last active, how responsive they are and access transparent information that you wouldn't be able to find anywhere else.

                      Photos people at Starling BankPhotos people at Starling BankPhotos people at Starling BankPhotos people at Starling BankPhotos people at Starling Bank
                      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
                      Alex Yeates on cord
                      Message Alex Yeates at Starling Bank
                      Typically responds in an hour

                      What people are saying

                      2,000+

                      users joining every week

                      Oliver on cord

                      Oliver

                      Software Engineering Consultant
                      It's really easy to use, has a solid selection of jobs, and makes it helpful to direct message companies. The platform seems to offer a good range of opportunities while keeping the process simple and convenient.
                      November, 2025
                      David on cord

                      David

                      Lead Software Engineer
                      The platform allows you to create a professional CV, making the setup process simple and polished. The internal chat also provides an easy way to directly contact hiring companies, which makes communication much more efficient.
                      November, 2025
                      40,000+

                      open positions

                      Nicolae on cord

                      Nicolae

                      Senior Full Stack Developer
                      It is a great platform if you are looking for a job. It makes the search process straight forward and gives you access to solid opportunities.
                      November, 2025
                      3 million+

                      messages exchanged so far

                      Nicolae on cord

                      Nicolae

                      Senior Full Stack Developer
                      It is a great platform if you are looking for a job. It makes the search process straight forward and gives you access to solid opportunities.
                      November, 2025
                      82.89%

                      response rate from companies

                      Aarambha on cord

                      Aarambha

                      Associate Software Engineer
                      Absolutely amazing idea, the ability to see which recruiters are active makes finding opportunities very quick. There is a form of transparency built into the website that lacks in any other job searching platform.
                      August, 2025
                      Adam on cord

                      Adam

                      Senior Engineer
                      cord was great. Clean UI, easy to browse, and the data feature made it a breeze to quickly check whether my profile would match up well with a particular role. The messaging system made it easy to approach companies but also filter out unwanted requests.
                      August, 2025
                      4.6

                      score on Trustpilot

                      Talk directly to the people that matter

                      Join the hundred of thousands of people using cord to find work

                      Get started
                       on cord
                       on cord
                       on cord
                       on cord
                       on cord
                      +435 joined last week
                      Moved to your Not right positions