CrawlJobs Logo
Hunter Bond Logo Hunter Bond · IT - Software Development

Backend Software Developer (Python)

United Kingdom, London Employment contract 100000.00 GBP / Year · Job Posted June 03, 2026
Apply Position
Job Link Share

Job Description

Are you a Python expert ready to build cutting-edge systems powering real-world AI innovation? Join one of London’s most exciting AI startups, where we’re scaling fast and solving complex problems at the intersection of technology, data, and intelligence. We’re looking for a Backend Developer who thrives in dynamic environments — someone who loves clean code, scalable architecture, and being part of a team that’s pushing boundaries.

Job Responsibility

  • Designing, building, and optimizing high-performance backend systems in Python and FastAPI
  • Developing and maintaining backend systems that handle large volumes of real-time data
  • Writing clean, testable, and maintainable code following best practices
  • Contributing to system architecture decisions and the technical roadmap
  • Taking ownership of projects end-to-end in a collaborative, fast-moving environment

Requirements

  • Strong professional experience with Python
  • Solid experience building RESTful APIs with FastAPI (or similar frameworks like Flask/Django)
  • Passion for performance, scalability, and automation
  • Experience or interest in AI
  • A proactive mindset- someone who loves solving problems and experimenting with new tech

What we offer

  • Highly competitive salary of £100,000 plus comprehensive compensation
  • The opportunity to work at the forefront of AI innovation in a high-growth startup
  • Flexible and hybrid working arrangements based in London
  • A creative, fast-paced environment with genuine technical ownership
  • The chance to work on cutting-edge systems that solve complex real-world problems
Hunter Bond - All Job Offers

Looking for more opportunities?

Search for other job offers that match your skills and interests.

Suggested Tags: Frontend Developer Secretary Talent Manager Salesforce Administrator Data Analyst
Similar Jobs for

Backend Software Developer (Python)

8 matching positions

Senior Software Developer, Backend Platform

Join us in building the future of finance. Our mission is to democratize finance...
Location
Location
Canada , Toronto
Salary
Salary:
145000.00 - 170000.00 CAD / Year
robinhood.com Logo
Robinhood
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Significant experience building scalable backend systems in Go and/or Python
  • Deep familiarity with server-side frameworks such as Django or Go-based systems
  • Strong track record designing or maintaining internal developer platforms or shared infrastructure
  • Experience mentoring engineers, guiding technical decisions, and contributing to team-wide strategies
  • Passion for developer productivity, quality engineering practices, and thoughtful abstraction
Job Responsibility
Job Responsibility
  • Design and lead high-impact projects to improve frameworks, common libraries, and the backend development lifecycle
  • Own and evolve core tooling used across the monorepo — including static analysis, code formatting, and project scaffolding
  • Build delightful developer experiences with enhanced IDE plugins (VSCode, Goland, PyCharm) and interface definition tools like Protobuf
  • Drive best practices in backend architecture through standardization, automation, and opinionated defaults
  • Mentor engineers across the org and champion team values like “Start with Why” and “Easy to Make the Right Choice”
  • Collaborate with cross-functional stakeholders to align on tooling investments, migration strategies, and security improvements
What we offer
What we offer
  • bonus opportunities
  • equity
  • benefits
  • Fulltime
Read More
Arrow Right

Staff Software Development Engineer

Design and develop software applications and platforms to support digital strate...
Location
Location
United States , Woonsocket
Salary
Salary:
147680.00 - 240000.00 USD / Year
https://www.cvshealth.com/ Logo
CVS Health
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s degree (or foreign equivalent) in Computer Science, Computer Engineering, Information Technology, Engineering, or a related field
  • 5 years of progressive, postbaccalaureate experience in the job offered or related occupation
  • 5 years of experience in CI/CD, Jenkins, GIT, or DevOps
  • 5 years of experience in Java, Python, or Node.js
  • 5 years of experience in XML, JSON, HTML, or CSS
  • 5 years of experience in Agile methodologies or SAFe Software Development Principles
  • 5 years of experience in ATG Commerce or Spring Boot microservices
  • 5 years of experience in Typescript or objected-oriented JavaScript
  • 5 years of experience in REST, SOAP, or Web Service APIs
  • 5 years of experience in Oracle, Redis, or Cassandra database
Job Responsibility
Job Responsibility
  • Design and develop software applications and platforms to support digital strategies and solutions
  • Analyze user needs and develop software solutions to meet business requirements
  • Determine feasibility of solutions design and prepare technical design documentation
  • Upgrade existing software applications and/or systems to improve functionality and features with a focus on performance, reliability, and maintainability
  • Write and review high quality code and perform unit and/or automation testing
  • Develop and deploy application components and support unit testing and bug fixes
  • Participate in AGILE Scrum meetings and/or CI/CD
  • Support applications, systems, and databases used to process prescriptions, claims, and related healthcare activities
  • Collaborate with cross-functional teams on applications development, technical requirements, code review, project deliverables, quality assurance, and software development best practices
  • Independently lead development of solutions with high complexity and risk
What we offer
What we offer
  • Bonus, commission or short-term incentive program
  • Equity award program
  • Medical benefits
  • Dental benefits
  • Vision benefits
  • 401(k) retirement savings plan
  • Employee Stock Purchase Plan
  • Fully-paid term life insurance plan
  • Short-term disability benefits
  • Long term disability benefits
  • Fulltime
Read More
Arrow Right

Senior Backend Developer

We are seeking a skilled and experienced Backend Developer with 5 to 8 years of ...
Location
Location
India
Salary
Salary:
Not provided
northbaysolutions.com Logo
NorthBay
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Proven experience in backend development with Python or Node.js
  • Strong understanding of microservices architecture and RESTful API design
  • Experience with containerization tools like Docker and orchestration with Kubernetes
  • Knowledge of testing frameworks (e.g., PyTest, Mocha, Jest) and test-driven development practices
  • Hands-on experience with SQL, NoSQL (e.g., MongoDB, DynamoDB), and Vector databases (e.g., Pinecone, FAISS)
  • Experience deploying and managing applications on cloud platforms (AWS, Azure, or GCP), including compute services, serverless functions, cloud databases, and networking components
  • Strong problem-solving skills, communication abilities, and a collaborative mindset
  • Self-motivated and able to work independently in a distributed team environment
Job Responsibility
Job Responsibility
  • Design, develop, and maintain robust and scalable RESTful APIs for enterprise-level applications
  • Build and deploy microservices using modern backend frameworks with a strong emphasis on performance and maintainability
  • Implement containerized applications using Docker and Kubernetes
  • Write unit and integration tests using relevant testing frameworks to ensure code quality and system reliability
  • Collaborate with cross-functional teams including front-end developers, DevOps, and data engineers to deliver high-quality software solutions
  • Optimize backend performance and ensure security compliance throughout the development lifecycle
  • Maintain and work with various database technologies including SQL, NoSQL, and Vector databases
  • Deploy, monitor, and troubleshoot applications in cloud environments (compute, serverless, networking, storage)
  • Fulltime
Read More
Arrow Right

Staff Software Engineer, Backend

The Staff Engineer will work closely with AI/ML engineers, product managers, app...
Location
Location
United States , NYC
Salary
Salary:
160000.00 - 190000.00 USD / Year
conductor.com Logo
Conductor
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Completed studies in Computer Science, Mathematics, engineering or a related field or equivalent professional experience
  • 8+ years of experience in software development, with experience in product-driven companies
  • Strong expertise in system design, distributed computing, and scalable architecture patterns for handling large datasets and high-throughput applications
  • Proficiency in multiple programming languages with strong Python coding skills. Experience with Java is highly valued
  • Strong database experience including both SQL and NoSQL systems, with knowledge of data modeling and optimization techniques
  • Experience with AI/ML technologies including LLMs, vector databases (e.g., Milvus), embeddings, and ML frameworks
  • Knowledge of MLOps practices, model deployment, and AI system integration in production environments
  • Experience working across the full software development lifecycle including CI/CD, monitoring, testing, and production deployment
  • Proven track record of technical leadership, mentoring engineers, and driving engineering excellence within teams
  • Up-to-date with rapidly-evolving technologies and demonstrated ability to evaluate and adopt new tools and frameworks
Job Responsibility
Job Responsibility
  • Lead the technical architecture, design, and implementation of large-scale distributed systems and data platforms to support customer needs and business growth
  • Oversee the planning, execution, and successful delivery of complex engineering projects, ensuring adherence to engineering best practices and quality standards
  • Design and build scalable, high-performance backend systems and APIs that handle millions of requests and large datasets efficiently
  • Architect robust data processing pipelines and ETL workflows using modern cloud technologies and distributed computing frameworks
  • Drive technical decision-making across the engineering organization, evaluating trade-offs and establishing engineering standards and practices
  • Lead cross-functional collaboration with product, AI/ML engineering, data engineering, and infrastructure teams to deliver comprehensive solutions
  • Build and maintain CI/CD pipelines, monitoring systems, and deployment automation to ensure reliable software delivery
  • Implement AI/ML capabilities including LLM integration, vector databases, and intelligent content processing workflows
  • Mentor senior and junior engineers, fostering technical excellence and knowledge sharing within the engineering organization
What we offer
What we offer
  • 100% covered employee medical plan
  • a dental & vision plans
  • 401(k) with employer contribution
  • an unlimited vacation policy
  • 10 sick days
  • short-term disability
  • long-term disability
  • generous paid parental leave
  • employee assistance program
  • flexible savings accounts
  • Fulltime
Read More
Arrow Right

Staff Software Engineer - Backend

Archer is an aerospace company based in San Jose, California building an all-ele...
Location
Location
United States , San Jose
Salary
Salary:
163200.00 - 200000.00 USD / Year
archer.com Logo
Archer Aviation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • BS/MS/PhD in Computer Science or a related technical field
  • 7+ years of backend software engineering experience, with a proven track record of delivering scalable backend systems
  • Expert-level proficiency in Python for backend application development
  • Strong experience with AWS, including services such as Lambda, API Gateway, S3, DynamoDB, ECS/Fargate, etc.
  • Proficiency with infrastructure-as-code tools such as Terraform or AWS CDK
  • Deep understanding of RESTful API design, microservices architecture, and distributed systems
  • Experience with performance tuning, system monitoring, and observability tools
  • Excellent debugging, analytical, and problem-solving skills
  • Strong communication and collaboration skills across technical and non-technical stakeholders
Job Responsibility
Job Responsibility
  • Design, develop, and maintain scalable backend systems and APIs to support Archer’s ride-sharing and airline operational platforms
  • Build cloud-native applications and services using Python and AWS technologies
  • Lead architectural design and system integrations, ensuring systems are modular, efficient, and secure
  • Develop infrastructure-as-code using Terraform or AWS CDK to provision and manage backend environments
  • Collaborate with stakeholders to define technical requirements and translate them into robust implementations
  • Own the full development lifecycle—from design and development to deployment, monitoring, and maintenance
  • Conduct code reviews, enforce engineering best practices, and mentor fellow engineers
  • Monitor system performance and reliability, and respond to production issues with effective debugging and root cause analysis
  • Fulltime
Read More
Arrow Right

Junior Software Developer

AnaVation seeking a highly skilled Junior Software Developer to join a team deve...
Location
Location
United States , Washington, DC
Salary
Salary:
Not provided
anavationllc.com Logo
AnaVation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s degree in Computer Science, or other related analytical, scientific, or technical discipline
  • Minimum of 1 year of experience developing, testing, and deploying back end software in a widely used programming language such as Java, Python, Go, JavaScript, Typescript, or .NET
  • Experience developing, testing, and deploying Java software using the latest versions of the Java Development Kit
  • Experience implementing and using backend frameworks such as Java Spring, Nodejs, Go Gin, AngularJS, React, NextJS, Spring, Nodejs, NestJS, and Gin Java frameworks such as Spring, Google Web Toolkit, Hibernate, and Struts
  • Experience with software development lifecycle processes to include Agile development
  • Experience with software design patterns and antipatterns
  • Experience with development tools (git, integrated development environment, code quality tools, etc.)
  • Excellent communication, problem-solving, and teamwork skills
  • This position requires a Top-Secret clearance with SCI eligibility
Job Responsibility
Job Responsibility
  • Develop, maintain, and optimize full-stack web applications
  • Collaborate with stakeholders and product owners to decompose epics into actionable Agile stories and tasks under the SAFe methodology
  • Develop responsive, component-driven UIs using tools just as Angular React, Next.js, Storybook, and Jest
  • Develops codes, tests, and debugs new software or enhancements to existing software
What we offer
What we offer
  • Generous cost sharing for medical insurance for the employee and dependents
  • 100% company paid dental insurance for employees and dependents
  • 100% company paid long-term and short term disability insurance
  • 100% company paid vision insurance for employees and dependents
  • 401k plan with generous match and 100% immediate vesting
  • Competitive Pay
  • Generous paid leave and holiday package
  • Tuition and training reimbursement
  • Life and AD&D Insurance
  • Fulltime
Read More
Arrow Right

Staff Backend Software Engineer, Insights

Cresta Insights: As a Staff full-stack engineer, with a backend focus, you will ...
Location
Location
Romania , Bucharest; Cluj
Salary
Salary:
Not provided
cresta.com Logo
Cresta
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Proven experience as a Backend Engineer with a focus on database design and system architecture
  • Strong expertise in ClickHouse or similar columnar databases for managing large-scale, real-time analytical queries
  • Hands-on experience with Elasticsearch for indexing and searching large datasets
  • Proficient in backend programming languages such as Python, Go
  • Experience with RESTful API design and development
  • Solid understanding of distributed systems, microservices architecture, and cloud infrastructure
  • Experience with performance tuning, data modeling, and query optimization
  • Strong problem-solving skills and attention to detail
  • Excellent communication and teamwork abilities
Job Responsibility
Job Responsibility
  • Design, implement, and maintain backend services and APIs to support applications
  • Build and optimize data storage solutions using Postgres, ClickHouse and Elasticsearch to ensure high performance and scalability
  • Collaborate with cross-functional teams, including frontend engineers, data scientists, and machine learning engineers, to deliver end-to-end solutions
  • Monitor and troubleshoot performance issues in distributed systems and databases
  • Write clean, maintainable, and efficient code following best practices for backend development
  • Participate in code reviews, testing, and continuous integration efforts
  • Ensure security, scalability, and reliability of backend services
  • Analyze and improve system architecture, focusing on performance bottlenecks, scaling, and security
Read More
Arrow Right

Senior Software Engineer, Backend

Affirm is reinventing credit to make it more honest and friendly, giving consume...
Location
Location
Canada
Salary
Salary:
150000.00 - 200000.00 CAD / Year
affirm.com Logo
Affirm
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 4+ years of experience designing, developing and launching backend systems at scale using languages like Python or Kotlin
  • track record of developing highly available distributed systems using technologies like AWS, MySQL and Kubernetes
  • familiar with processing data offline using frameworks like Spark or Ray
  • knowledge of stream processing architectures and ability to bridge the gap between online and offline systems with hybrid designs
  • experience defining a technical plan for the delivery of a significant feature or system component with an elegant, simple and extensible design
  • write high quality code that is easily understood and used by others
  • proficient at making significant changes in a large code base, and have developed a suite of tools and practices that enable you and your team to do so safely
  • experience demonstrates that you take ownership of your growth, proactively seeking feedback from your team, your manager, and your stakeholders
  • strong verbal and written communication skills that support effective collaboration with our global engineering team
Job Responsibility
Job Responsibility
  • own and deliver quarterly goals for your team, lead engineers on your team through ambiguity to solve open-ended problems, and ensure that everyone is supported throughout delivery
  • support peers and stakeholders in the product development lifecycle by collaborating with product management, design & analytics by participating in ideation, articulating technical constraints, and partnering on decisions that properly consider risks and trade-offs
  • proactively identify project, process, technology or business issues, advocate for them, and lead in solving them
  • support the operations and availability of your team’s artifacts by creating and monitoring metrics, escalating when needed, and supporting “keep the lights on” & on-call efforts
  • foster a culture of quality and ownership on your team by setting or improving code review and design standards for your team, and advocating for them beyond your team through your writing and tech talks
  • help develop talent on your team by providing feedback and guidance, and leading by example
What we offer
What we offer
  • monthly stipends for health, wellness and tech spending
  • 100% subsidized medical coverage, dental and vision for you and your dependents
  • equity rewards
  • flexible Spending Wallets - generous stipends for spending on Technology, Food, various Lifestyle needs, and family forming expenses
  • competitive vacation and holiday schedules
  • employee stock purchase plan enabling you to buy shares of Affirm at a discount
  • Fulltime
Read More
Arrow Right