and decision records that shape product direction. Help define and implement end-to-end testing and deployment strategies. 🔧 Tech Stack: Frontend: React (Remix, SSR, and modern frameworks) Backend: Node.js, REST APIs, JSON:API standards Realtime: WebSockets, CRDTs (Yjs) Tooling: Tiptap, ProseMirror, CLI, IDE extensions Infra: CI/CD pipelines, Kubernetes, AWS ✅ What You Bring: ~6+ years building complex products in More ❯
City of London, London, United Kingdom Hybrid / WFH Options
TreasurySpring
around a Scheme-based workflow notation. Our frontend systems include our clean, simple web portal for client order capture and reporting, built in TypeScript and React; with server-side REST and GraphQL APIs written in Python3. What we’re looking for... Essential skills and experience: 5+ years experience of developing complex applications using an OO language (ideally Python, but experience … any of the frameworks we currently use: Flask, SqlAlchemy, Alembic, Pydantic Experience with relational databases, ideally Postgres Experience of message-based architectures, and queuing technologies, i.e. RabbitMQ Experience of REST and/or GraphQL APIs Knowledge of the core AWS services: i.e. EC2/ECS, RDS, S3 Experience using DataDog or similar observability tools Knowledge of containerisation: Docker, Kubernetes, AWS More ❯
part of a new financial data product. Creating dynamic and high quality client facing analytics tools Solving complex problems surrounding scalability and data Getting involved with architectural decisions Integrating REST API's Required skills: Strong React and TypeScript for building web applications 6+ years of software development experince Experience with large data sets or visualisation technologies Capital markets experience (beneficial More ❯
weeks Requirements Minimum of 4 years of advanced experience working with Python and Django Hands-on experience with SQL databases Strong expertise in software design principles and building REST APIs Proficient in Git, with the ability to troubleshoot and resolve technical issues effectively Deep expertise in a core functional area of the business or in a key language, framework, or More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Ampstek
Docker and Kubernetes (K8s) for container orchestration. Solid understanding of log management, observability, and monitoring frameworks . Knowledge of scripting languages (Python, Shell, or PowerShell) for automation. Familiarity with REST APIs, JSON, and data integration techniques . Experience in performance tuning and troubleshooting Splunk/ELK environments. Strong problem-solving skills with the ability to work in fast-paced environments. More ❯
Dash i. Key skills: Customizing with Plotly Graph Objects for advanced interactivity. ii. Creating dashboards with Dash: Callbacks, Layouts (HTML & CSS integration), Components (Dropdowns, sliders, graphs, tables). iii. REST APIs: Fetching or sending data to backend services More ❯
SR2 | Socially Responsible Recruitment | Certified B Corporation™
Create microservices to connect trading platforms and grid operators What We’re Looking For Strong Software Fundamentals: Excellent Python skills (Rust is a bonus) and experience designing distributed systems, REST APIs, and microservices Data & Infrastructure: Experience with Kafka or similar streaming technologies, PostgreSQL, and time-series data management DevOps & Observability: Familiar with Docker, monitoring, and observability tools Bonus Points For More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Savant Recruitment Experts
including system updates and regression testing. Essential Skills and Experience Significant hands-on experience as a Salesforce Developer in complex environments. Expertise in Apex, Lightning Web Components (LWC), SOQL, REST/SOAP APIs, and Salesforce configuration tools. Strong working knowledge of Salesforce Service Cloud (essential); experience with Experience Cloud, Sales Cloud & Marketing Cloud (desirable). Proven experience with CI/ More ❯
Trading UI Engineer – Front Office JavaScript, React, typescript, NodeJS, Tailwind, GraphQL, ApolloQL, Webpack, Cypress, HTML, CSS, REST, Data Visualisation, API. Real Time Trading Software, UI Development Perm Role – London – Onsite. £80000 - £100000 plus bonus Harrington Starr has partnered up with a Global Investment Bank in the City of London who are looking to hire a Senior UI Trading Software Developer More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Zendr
customer feedback to influence product and integration roadmap. Requirements 5+ years’ experience in Solutions Engineering, Implementation, or Forward Deployed roles within SaaS, FinTech, or RegTech. Technical proficiency with: APIs (REST, Webhooks, Postman), ETL pipelines and data ingestion, Relational databases (PostgreSQL, MySQL) Python or JavaScript/TypeScript Strong communication skills with both technical and non-technical stakeholders. Experience working with financial More ❯
City of London, London, United Kingdom Hybrid / WFH Options
SR2 | Socially Responsible Recruitment | Certified B Corporation™
operators Building monitoring dashboards for grid stability and energy storage operations What they’re looking for Strong software fundamentals — ideally Python , Rust is a bonus Experience with distributed systems, REST APIs, and microservices Knowledge of Kafka (or similar), PostgreSQL , and time-series data Familiar with Docker, monitoring, and observability tools ✅ Experience in a startup or scale-up , collaborating closely with More ❯
is beneficial Generative AI Product experience Production-grade Python skills Frontend experience with Vue + TypeScript , or React and a willingness to learn Vue Understanding of web performance, testing, REST APIs, OAuth Comfort working in fast-paced, ambiguous environments Bonus: experience with devtools, no-code/low-code, AI tools, or OSS contributions This is a rare chance to learn More ❯
keen attention to detail Communication - ability to clearly explain technical solutions to non-technical audiences Bonus Points For: Experience with Intapp Intake and Conflicts solutions Building integrated solutions using REST APIs Working knowledge of JavaScript Familiarity with Boomi automation platforms Understanding of Know Your Client (KYC) data including corporate hierarchies, directors, shareholders and related parties Background working in a law More ❯
City of London, London, United Kingdom Hybrid / WFH Options
X4 Technology
support quarterly system updates. Technical Operations Perform SQL/data analysis on ERP and Vertex databases for tax reconciliations. Troubleshoot API integrations, data feeds, and calculation discrepancies. Maintain Vertex REST/SOAP API integrations and support FBDI/ADFdi data loads. Monitor performance and optimize tax data loads and batch processes. Compliance & Reporting Support tax compliance reporting (Sales & Use Tax More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Paradigm Talent
an understanding of performance tuning and concurrency. Hands-on experience with Kubernetes , AWS , and modern cloud infrastructure . Proficiency with databases — schema design, performance optimization, and analytics. Familiarity with REST APIs , websockets, and authentication/security best practices. A disciplined engineering mindset — you think about reliability, maintainability, and long-term scalability. Nice-to-haves Experience with MLOps and model-serving More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Inara
using React, TypeScript/JavaScript, and modern cloud environments (AWS, GCP, or similar). Experience working with headless CMS platforms such as Storyblok, and strong understanding of API design (REST/GraphQL). Proven ability to collaborate with non-technical stakeholders , distilling abstract ideas into actionable plans and measurable outcomes. Familiarity with AI-enhanced development environments — using code assistants, automated More ❯
valuable) Technical Skills: Expertise in Microsoft Graph API, Microsoft 365 compliance and security, and identity management. Experience with Copilot Studio and building custom Copilot agents or plugins. Familiarity with REST APIs, JSON, OAuth, and integration patterns with enterprise systems (e.g., CRM, ERP, data lakes). Understanding of prompt engineering, grounding techniques, and responsible AI principles. Soft Skills: Strong communication and More ❯
record of delivering integration solutions in enterprise or global organisations. Experience working with ERP systems (preferably NetSuite) and associated integration tools and methodologies. Strong understanding of APIs, web services (REST/SOAP), and data exchange formats (JSON, XML, CSV). Familiarity with middleware platforms (e.g., Dell Boomi, MuleSoft, Workato) or equivalent integration technologies. Experience managing relationships with vendors and third More ❯
Skills Build advanced personalization logic using AMPscript . Write SQL queries for segmentation, automations, and analytics. Use SSJS for complex automation and data processing tasks. API Integrations Experience with REST/SOAP APIs for data imports, exports, and trigger sends. Integrating SFMC with external systems (CDP, CRM, backend services, etc.). Data Management Design, maintain, and optimize data models within More ❯
and glossaries; implement automated enrichment, sensitive data detection, and trust indicators. Integration & Automation — Build and maintain connectors across platforms like Snowflake, Databricks, Tableau, Power BI, and Salesforce . Implement REST APIs and event-driven automation for near real-time metadata synchronization. Data Governance Enablement — Define RBAC, data ownership models, workflows, and certification for golden datasets. Data Quality & Observability — Integrate DQ More ❯
Management (ITOM). Customer Service Management (CSM). Integration Design: Design and oversee the implementation of complex integrations between ServiceNow and other enterprise systems, leveraging various integration methods (e.g., REST, SOAP, JDBC, MID Server). Technical Oversight & Quality Assurance: Provide technical oversight to development teams, ensuring adherence to architectural patterns, coding standards, and performance best practices. Participate in code reviews More ❯
Enhance system observability by improving diagnostics, logging, and tracing to aid technical support teams in resolving issues swiftly. Oversee the ongoing development and management of the public API, covering REST and event streaming functionality to support bespoke client integrations. Produce comprehensive technical documentation for both internal stakeholders and external users, leveraging tools like Swagger for clarity and accessibility. Drive the More ❯
City of London, London, United Kingdom Hybrid / WFH Options
RedTech Recruitment
Enhance system observability by improving diagnostics, logging, and tracing to aid technical support teams in resolving issues swiftly. Oversee the ongoing development and management of the public API, covering REST and event streaming functionality to support bespoke client integrations. Produce comprehensive technical documentation for both internal stakeholders and external users, leveraging tools like Swagger for clarity and accessibility. Drive the More ❯
