Back-End Engineer
New York / $170000 - $180000 annum
INFO
$170000 - $180000
LOCATION
New York
Permanent
Backend Software Engineer
FinTech AI Startup | NYC (Hybrid)
$160,000 - $180,000 + Equity
Join a fast-growing, venture-backed AI startup on a mission to revolutionize cloud financial optimization. Based in New York's West Village, this company is automating one of the most complex cost centers in tech. Their proprietary AI platform combines machine learning, automation, and intelligent rate optimization to help companies scale efficiently.
With recent funding secured and major growth on the horizon, they're hiring a Backend Engineer to help scale the core infrastructure and build out a suite of API-driven, data-intensive microservices.
THE ROLE
This is a high-impact backend engineering role sitting at the intersection of software, infrastructure, and data. You'll be working across multi-cloud environments (primarily AWS), building scalable systems for data processing, financial modeling, and automation.
You'll work closely with the CTO and a lean team of highly skilled engineers (currently 6 total).
Expect fast build cycles, flexible working hours, and ownership from day one.
What you'll be doing:
- Build and maintain scalable microservices using Python and serverless AWS technologies
- Design high-performance APIs and endpoints for real-time data retrieval
- Architect cloud-native infrastructure using Terraform (IaC)
- Own CI/CD workflows using GitLab Actions
- Develop and optimize large-scale data pipelines for AI/ML financial insights
- Ensure robust API security (OAuth/OpenAPI) and cloud compliance standards
THE TECH STACK
- Languages: Python, SQL
- Cloud: AWS (with exposure to GCP a plus)
- Infra: Docker, Kubernetes, Terraform
- Pipelines: ETL, unstructured-to-structured data transformation
- CI/CD: GitLab Actions
YOUR BACKGROUND
Must-haves:
- 4+ years' experience in software engineering with cloud and data focus
- Strong expertise in AWS and Terraform
- Proven track record building data pipelines and backend APIs
- Experience working with unstructured data at scale
- Deep understanding of infrastructure and cloud cost considerations
- Clear communicator, team-first, thrives in fast-paced environments
Nice-to-haves:
- Startup experience
- Machine learning integration exposure
- GCP or multi-cloud experience
- AWS certifications
Not the right fit if: You come from a heavily siloed or large enterprise/consulting background where breadth of technical ownership was limited.
WHY JOIN?
- Equity in a fast-scaling, AI-driven FinTech
- Opportunity to join at Series A, own critical parts of the platform
- CTO-led engineering culture: collaborative, ego-free, impact-first
- Flexible hybrid model (3 days in office, no set days)
- Tech-first environment with diverse challenges-no siloes here
Perks:
- Unlimited PTO + mandatory company shutdowns in August & December
- 16-week fully paid parental leave
- 30-day sabbatical every 4 years
- Premium healthcare (75% employer-covered)
- Work-from-office in the heart of West Village
- Startup pace with mature engineering culture
INTERVIEW PROCESS
- 15-min intro with CTO - explore your background & engineering approach
- 30-min technical/behavioral interview - live coding + problem-solving
- Take-home assignment (~2 hours)
- Review session with CTO
- Final interview with co-founders/team (remote or onsite)
They move fast-can wrap everything up within two weeks
CONTACT
Conor Larkin
Senior Manager
SIMILAR
JOB RESULTS
VP of Analytics
New York
$270000 - $300000
+ Advanced Analytics & Marketing Insights
PermanentNew York
To Apply for this Job Click Here
VP of Analytics
New York City (Hybrid)
Education
Salary: $270,000 – $300,000 + Bonus
Harnham is currently supporting a high-growth organization in the education sector as they look to appoint a VP of Analytics. This is a senior leadership role within a well-established and innovative technology division, responsible for enabling data-driven decision-making across the enterprise.
Overview
The organization is undergoing a significant digital transformation and views data as a key strategic asset. The VP of Analytics will lead a multifunctional team and oversee enterprise data architecture, reporting, advanced analytics, and data science. This individual will play a critical role in ensuring accurate, timely, and actionable insights are available to inform decisions at all levels of the business.
Key Responsibilities
- Build strong relationships with stakeholders across the business to understand and serve their data needs
- Lead and develop the enterprise data and analytics function, maintaining high standards for data quality, delivery, and insight
- Oversee data engineering and analytics processes, ensuring scalability and efficiency through automation and standardization
- Present complex data findings in a clear and actionable manner to senior leadership and non-technical audiences
- Develop and drive the strategic roadmap for analytics and AI adoption across the organization
- Collaborate with technology teams to optimize data flow and system integration
- Ensure best practices in data governance, visualization, and statistical modeling
Required Experience
- Strong track record of managing large-scale data teams encompassing data engineering, visualization, and data science
- Advanced proficiency in statistical modeling, predictive analytics, machine learning, and time-series analysis
- Hands-on experience with tools such as Python, Java, SQL, and cloud platforms like AWS or Azure
- Deep knowledge of BI platforms such as Looker, Power BI, or Qlik
- Exceptional communication and stakeholder management skills, with the ability to influence executive leadership
- Experience with agile methodologies and working in fast-paced, resource-constrained environments
- Prior exposure to education, EdTech, or public sector organizations is beneficial but not required
Why Apply?
This is a rare opportunity to lead a high-performing data team at a values-driven organization making a measurable impact in the education space. The successful candidate will play a pivotal role in shaping enterprise data strategy and enabling innovation through analytics.
To learn more or express interest in this role, please contact Oisin Ennis at Harnham for a confidential discussion.
To Apply for this Job Click Here
Platform Support Engineer
London
£45000 - £50000
+ Data Engineering
PermanentLondon
To Apply for this Job Click Here
PLATFORM SUPPORT ENGINEER
CENTRAL LONDON – 2 DAYS PER WEEK IN OFFICE
£45,000 – £50,000 + BENEFITS
Are you a highly motivated and curious individual with a passion for systems administration and a drive to learn and grow within a cutting-edge environment? This is a unique opportunity to join a well-funded and innovative firm that’s reshaping how individuals manage their financial insights.
THE COMPANY:
This company specialises in providing sophisticated financial insight, aggregating vast amounts of data to offer a holistic view across various financial profiles. They help clients understand their life goals and provide actionable insights to help them achieve those ambitions.
Having secured significant later-stage venture capital funding, they manage substantial assets for hundreds of clients. The founders bring diverse expertise from finance and technology, ensuring a company with strong financial backing and a clear vision.
THE ROLE:
You’ll be a crucial part of the engineering team, reporting directly to the Technical Team Lead and working alongside another Platform Support Engineer. This is a fantastic opportunity to gain broad exposure and develop your skills within a sophisticated platform environment.
This role is about being a versatile – someone who loves technology and is eager to jump in and support various aspects of their robust platform. Your primary responsibility will be to provide 1st, 2nd, and 3rd line support, mainly assisting the core Platform Engineering team. This will involve significant system administration work. They are keen to find someone with a passion for the field, perhaps demonstrated through personal projects or a home lab, rather than extensive professional experience.
YOUR SKILLS AND EXPERIENCE:
The ideal candidate will have strong communication skills and a curious, proactive personality. They don’t require specific professional experience in a similar role, as passion and potential are key.
- System Administration skills and a keen interest in this area.
- Linux & Network administration knowledge.
- A “self-starter” mentality with a strong passion for technology.
BENEFITS:
- Company bonus scheme.
- Generous holiday allowance (starting at 25 days, increasing to 30).
- Enhanced pension.
- Potential for equity review after probation (not guaranteed).
HOW TO APPLY:
Please send your CV via the Apply link on this page.
To Apply for this Job Click Here
Senior Data Wrangler / Engineer (Financial Services)
London
£300 - £400
+ Data Engineering
ContractLondon
To Apply for this Job Click Here
SENIOR DATA ENGINEER / DATA WRANGLER – (FINANCIAL SERVICES)
6-MONTH CONTRACT
£400 PER DAY (INSIDE IR35)
ASAP START
THE COMPANY
Join a prestigious financial services consultancy supporting top-tier clients on sensitive, high-impact forensic data analytics projects. Operating under strict NDAs, the firm tackles complex financial investigations involving billions of records from multiple sources. You’ll be part of a dynamic team transforming raw data into actionable insights for reporting and compliance.
THE ROLE
As a Senior Data Engineer / Data Wrangler, you will lead the organization, transformation, and validation of massive financial datasets (Oracle, SQL, XML, CSV, text). Your focus will be on data lineage, comparative analysis, and forensic data engineering to ensure data accuracy and usability. You’ll collaborate closely with stakeholders through frequent stand-ups and continuous monitoring, driving data quality in an intense, fast-paced environment.
Key responsibilities:
-
Wrangle, format, and organize large financial data sets for reporting and analysis
-
Develop and maintain Python scripts (using pandas) for forensic data processing
-
Write and optimize SQL (T-SQL and Oracle) for data extraction and validation
-
Perform comparative and lineage analysis to identify data inconsistencies
-
Initially able to work onsite regularly with flexibility, particularly during early stages of the contract
KEY SKILLS & REQUIREMENTS
-
3-5 years minimum in data engineering or forensic analytics
-
Very strong SQL skills, including T-SQL and Oracle
-
Proficient in Python scripting with pandas
-
Experience working with large financial data sets and complex formats
-
Background in financial services consultancy or investigative firms (e.g., EY, PwC, Deloitte, Goldman Sachs) highly desirable
-
Ability to work onsite regularly and commit fully to project timelines
DESIRABLE
-
Experience handling sensitive financial data under NDA
-
Comfortable working in on-premise environments
-
Forensic data analysis experience
This is an excellent opportunity to work on a high-profile project with leading financial clients, delivering critical insights through expert data wrangling and engineering.
To Apply for this Job Click Here
Data Wrangler
London
£350 - £400
+ Data Engineering
ContractLondon
To Apply for this Job Click Here
DATA WRANGLER
6-MONTHS
£400 PER DAY – INSIDE IR35
HYBRID – LONDON
This is an exciting opportunity for a highly analytical and detail-driven Data Wrangler to support a major forensic data analytics project. You’ll be working with a specialist team to ingest, clean, and compare massive datasets from multiple complex systems – some sources containing hundreds of millions of records. The ideal candidate will thrive in ambiguity, work independently, and apply a forensic lens to messy, unstructured operational data.
THE COMPANY
You’ll be working with a globally recognised advisory firm, known for its work in forensic investigations, compliance, and financial disputes. This team operates in a highly confidential environment, supporting projects with national-level visibility. You’ll be joining a collaborative, focused, and expert-led group engaged on a high-stakes piece of work.
THE ROLE
You’ll play a hands-on role working with data received from external clients-often incomplete, inconsistent, or raw. Your job is to wrangle that data into usable form, run forensic-level comparisons, and support reporting back to clients. You’ll work in a secure VDI environment and must be comfortable navigating complex and sensitive data.
Key responsibilities include:
-
Ingesting and transforming large datasets (100M+ rows), from Oracle, SQL Server, and flat files (CSV, XML).
-
Writing and reviewing SQL and Python (Pandas) scripts to clean and join data across multiple sources.
-
Conducting forensic comparisons between data sources (e.g., matching millions of XML records to transactional logs).
-
Supporting peer code reviews to ensure high quality and reduce rework.
-
Working within a locked-down environment using tools like VS Code, SQL clients, and secure remote desktop environments.
-
Collaborating with data consultants and forensic analysts to troubleshoot logic and ensure audit-quality outputs.
KEY SKILLS & REQUIREMENTS
-
Strong SQL (T-SQL, Oracle, or PostgreSQL) – must be comfortable with complex joins and large volumes
-
Python with Pandas – mandatory for data transformation and wrangling
-
Experience working with large operational databases, text files, and legacy data sources
-
Strong attention to detail and a forensic mindset – ability to spot inconsistencies, gaps, and unusual data behaviour
-
Prior experience in a regulated, sensitive, or secure data environment is a big plus
-
Previous work in or alongside large consultancy firms
HOW TO APPLY
Please register your interest by sending your CV via the apply link.
To Apply for this Job Click Here
Senior Software Engineer
City of London
£100000 - £110000
+ Data Engineering
PermanentCity of London, London
To Apply for this Job Click Here
SENIOR SOFTWARE ENGINEER (PYTHON)
CENTRAL LONDON – HYBRID (2-3 DAYS PW)
£100,000 – £110,000 + BONUS & BENEFITS
Are you a Senior Software Engineer passionate about building robust, scalable Python applications in a fast-paced fintech environment? This is a critical hire for a rapidly growing UK fintech, aiming to transform the credit landscape and empower thousands of customers. You’ll join a lean, agile engineering team, playing a pivotal role in a major tech transformation including a brand-new mobile app. If you’re a hands-on technical leader who thrives on impact and is excited by fintech and AI, this is your chance.
THE COMPANY:
This profitable fintech, with a strong Glassdoor rating, is disrupting the credit market by offering fairer financial products to those with limited credit histories. They’re in growth phase, and operate with the agility of a startup despite their success. You’ll contribute directly to products impacting customers, joining a team of around 100 people. Significant investment in their tech platform means your work will be at the forefront of innovation.
THE ROLE:
As a Senior Software Engineer, you’ll be a key player in a dynamic ~8-person engineering team, reporting to the Engineering Manager. This is a hands-on, end-to-end Python engineering role with no direct line management, focused on technical excellence and mentorship.
Your core responsibilities will include:
- Architecting, designing, and building scalable web platforms and APIs using Python.
- Collaborating in 2-week sprint cycles on diverse projects, from greenfield mobile app development to core platform enhancements.
- Contributing to testing strategies, CI/CD pipelines, and influencing architectural decisions.
- Mentoring peers and championing rapid, iterative development in a lean, fast-paced culture.
YOUR SKILLS AND EXPERIENCE:
- 7+ years in software development at a senior level.
- Strong backend Python engineering background (FastAPI, Flask, or Django preferred).
- Experience with AWS (Azure acceptable), Agile practices, and CI/CD.
- Some frontend awareness (React).
BENEFITS:
- Company bonus scheme.
- Generous holiday allowance (starting at 25 days, increasing to 30).
- Enhanced pension (with 4x base salary life cover).
- Training, mentoring, and career development.
HOW TO APPLY:
Please send your CV via the Apply link on this page.
To Apply for this Job Click Here
MLOps Engineer
London
£60000 - £70000
+ Data Science & AI
PermanentLondon
To Apply for this Job Click Here
MLOps Engineer
London
£60,000-£70,000
About the Role:
Join a cutting-edge technology company at the forefront of immersive experiences powered by machine learning and extended reality. We are seeking a skilled MLOps Engineer to help build, deploy, and maintain scalable machine learning infrastructure that drives innovation in our products. You will play a critical role in developing scalable ML infrastructure that powers immersive XR applications with real-time 3D content.
Key Responsibilities:
- Design, develop, and maintain scalable MLOps pipelines tailored for XR applications, ensuring smooth deployment and monitoring of machine learning models.
- Collaborate closely with 3D artists and XR developers to integrate machine learning workflows with 3D rendering engines.
- Optimize ML models and workflows for real-time inference within 3D environments and XR platforms.
- Manage cloud infrastructure and automation tools to support continuous integration and continuous deployment (CI/CD) of ML models.
- Troubleshoot and resolve performance bottlenecks related to ML inference and 3D rendering workloads.
- Develop monitoring solutions to track model performance and system health in production.
- Stay up to date with the latest trends in MLOps, XR technologies, and 3D rendering techniques to propose innovative improvements.
Qualifications:
- Proven experience as an MLOps engineer or similar role with a focus on 3D applications
- Strong programming skills in Python, and familiarity with ML frameworks (TensorFlow, PyTorch, etc.)
- Expertise in 3D reconstruction and rendering
- Experience with cloud platforms (AWS, GCP, Azure) and container orchestration (Kubernetes, Docker)
- Excellent problem-solving skills and ability to work cross-functionally in a fast-paced environment
Please register your interest for this role by sending your CV to Rosie O’Callaghan via the apply link on this page
To Apply for this Job Click Here
Senior BI Analyst
Manchester
£50000 - £60000
+ Advanced Analytics & Marketing Insights
PermanentManchester, Greater Manchester
To Apply for this Job Click Here
BI Analyst
Up to £60,000
Fully remote
THE CLIENT
This is an exciting opportunity to join an industry-leading organisation in the finance sector.
THE ROLE
This role is part of a centralized team that supports the data requirements across the entire organization. You will manage the full data lifecycle, including data extraction, transformation, and loading.
SKILLS AND EXPERIENCE
SQL
Cloud Service – Azure, AWS or GCP
Financial services or similar industry experience
NICE TO HAVE
Python
Snowflake
APPLY
Send an email or apply below to register your interest.
To Apply for this Job Click Here
Lead data scientist
€75000 - €80000
+ Data Science & AI
PermanentNouvelle-Aquitaine
To Apply for this Job Click Here
LEAD DATA SCIENTIST
HYBRIDE – UP TO 80K€ FIXES
Python – Docker – AWS
L’ENTREPRISE
C’est une entreprise reconnue dans le secteur automobile depuis plusieurs années. Elle intervient principalement dans la distribution et les services liés aux véhicules. Implantée sur plusieurs marchés, elle mise sur son expertise et son dynamisme pour accompagner ses clients.
LES MISSIONS
En collaboration avec le Directeur Data, vous rejoindrez une équipe de 10 personnes, vous serez en charge de la structuration des pratiques de Data Science. Vos missions seront les suivantes :
- Développer et déployer des modèles de Machine Learning pour répondre aux besoins métiers
- Assurer la maintenance évolutive des modèles
- Définir et mettre en oeuvre les méthodologies de Data Science
- Être orienté business et résultat
VOTRE PROFIL
- Bac+5 au sein d’une école d’ingénieur ou université en mathématiques, statistiques ou probabilités
- Minimum 4 ans d’expérience sur un rôle de data science dans des environnements en production
- Solide maîtrise de Python, Docker et un cloud public
- Niveau d’anglais B1
POUR POSTULER
Merci de me faire part de votre CV et je vous recontacterai au plus vite.
To Apply for this Job Click Here
Analytics Director
London
£75000 - £85000
+ Digital Analytics
PermanentLondon
To Apply for this Job Click Here
ANALYTICS DIRECTOR
£75,000 – £85,000
LONDON – 2X A WEEK
*Please note, this company is unable to sponsor, and you must be a UK resident to apply*
THE COMPANY
This mid-size Performance Marketing agency has global offices and works directly with some major clients in a range of sectors.
THE ROLE
This company is seeking a dynamic, all-rounder analytics leader who can blend strategy with hands-on execution. This role involves leading the data and analytics practice, collaborating with cross-functional teams to drive insights, and supporting clients in their data-driven decision-making. You’ll have a significant impact on both client strategy and internal capabilities, ensuring that the business stays ahead of industry trends. You will have 2 team members reporting into you.
SKILLS + EXPERIENCE
- Strong background in data science, measurement and attribution modelling
- Tech stack: Google Analytics (GA4), BigQuery/SQL, Google Tag Manager, Adobe Analytics, Salesforce
- Experience working closely with clients to define and implement data strategies
- Knowledge of MarTech tools and their integration into business strategies
- Ability to lead and inspire a growing data practice, ensuring it evolves with client needs
HOW TO APPLY
If this sounds like the role for you, swiftly send over your CV to Izzi at Harnham by using the link below.
To Apply for this Job Click Here
Product Manager – Ops Tech
London
£55000 - £62000
+ Advanced Analytics & Marketing Insights
PermanentLondon
To Apply for this Job Click Here
PRODUCT MANAGER – OPS TECH
£55,000 – £62,000 + 10% BONUS
LONDON – 2X A WEEK
*Please note, this company is unable to sponsor, and you must be a UK resident to apply*
THE COMPANY
This is a purpose-driven business focused on reducing food waste at the farm level by rescuing surplus or imperfect produce that would otherwise go to waste. Working directly with growers, the company delivers this produce to customers via flexible subscription boxes, promoting sustainable eating and supporting farming communities. Any excess is donated to charities to combat food poverty, making it a simple, impactful way for people to do good while reducing environmental harm!
THE ROLE
This company is seeking an Ops Tech Product Manager to lead and improve order management systems. The role involves managing the evolution from manual spreadsheets to a bespoke internal order management product, supporting personalised box orders, and overseeing the new marketplace supply chain. The next focus is researching and implementing an off-the-shelf ERP system, while maintaining a clear roadmap and strong leadership throughout the process.
SKILLS + EXPERIENCE
- Experience on the operations side of an internal digital product that is dictated by a physical product is key experience required – not a customer experience-based product
- Experience dealing with ERP system
- Marketplace, subscriptions and ecommerce background essential
HOW TO APPLY
If this sounds like the role for you, swiftly send over your CV to Izzi at Harnham by using the link below.
To Apply for this Job Click Here
Senior Digital Product Analyst
London
£55000 - £65000
+ Digital Analytics
PermanentLondon
To Apply for this Job Click Here
SENIOR DIGITAL PRODUCT ANALYST
£55,000 – £65,000
LONDON – 4X A WEEK
*Please note, this company is unable to sponsor, and you must be a UK resident to apply*
THE COMPANY
Join a fast-growing analytics team within a leading retail group that owns a diverse portfolio of high-street and digital brands. The business has been rapidly expanding and investing in its data capabilities over the past 18 months. This role sits within the Product Analytics pillar of the team and focuses on measuring and optimising product performance across the group’s extensive brand portfolio. You’ll report to the Analytics Lead and work closely with stakeholders across the business to drive insight-led decision making.
THE ROLE
This company is looking for a Digital Product Analyst to join and help measure and optimise digital product performance. The ideal candidate will have strong experience in digital journey analysis, on-site tracking metrics, and tools like SQL/BigQuery and GA4 (or Adobe Analytics). This role requires hands-on product/on-site analytics experience, familiarity with A/B testing, and the ability to collaborate with the GTM implementation team. They’ve recently migrated to GCP, with the platform fully set up and operational. You will have 2 junior team members reporting into you.
SKILLS + EXPERIENCE
- Google Analytics 4 (open to Adobe Analytics profiles)
- SQL/BigQuery
- Web/Digital/Product Analytics experience – onsite customer journey analysis focus and metrics is key
- Ability to collaborate with the Digital Implementation team (Google Tag Manager)
- Exposure to AB testing
HOW TO APPLY
If this sounds like the role for you, swiftly send over your CV to Izzi at Harnham by using the link below.
To Apply for this Job Click Here
Digital Product Analyst
London
£40000 - £50000
+ Digital Analytics
PermanentLondon
To Apply for this Job Click Here
DIGITAL PRODUCT ANALYST
£40,000 – £50,000
LONDON – 4X A WEEK
*Please note, this company is unable to sponsor, and you must be a UK resident to apply*
THE COMPANY
Join a fast-growing analytics team within a leading retail group that owns a diverse portfolio of high-street and digital brands. The business has been rapidly expanding and investing in its data capabilities over the past 18 months. This role sits within the Product Analytics pillar of the team and focuses on measuring and optimising product performance across the group’s extensive brand portfolio. You’ll report to the Analytics Lead and work closely with stakeholders across the business to drive insight-led decision making.
THE ROLE
This company is looking for a Digital Product Analyst to join and help measure and optimise digital product performance. The ideal candidate will have strong experience in digital journey analysis, on-site tracking metrics, and tools like SQL/BigQuery and GA4 (or Adobe Analytics). This role requires hands-on product/on-site analytics experience, familiarity with A/B testing, and the ability to collaborate with the GTM implementation team. They’ve recently migrated to GCP, with the platform fully set up and operational.
SKILLS + EXPERIENCE
- Google Analytics 4 (open to Adobe Analytics profiles)
- SQL/BigQuery
- Web/Digital/Product Analytics experience – onsite customer journey analysis focus and metrics is key
- Ability to collaborate with the Digital Implementation team (Google Tag Manager)
- Exposure to AB testing
HOW TO APPLY
If this sounds like the role for you, swiftly send over your CV to Izzi at Harnham by using the link below.
To Apply for this Job Click Here
CAN’T FIND THE RIGHT OPPORTUNITY?
STILL LOOKING?
If you can’t see what you’re looking for right now, send us your CV anyway – we’re always getting fresh new roles through the door.