767 Web Application Engineers jobs in London

"CVI Infrared Optics is a part of the IDEX Materials, Science and Solutions (MSS) platform. Besides our unique capabilities in manufacturing large optics from visible to longwave, we are backed by the combined capabilities of our platform. CVI offers a full spectrum of optical engineering, manufacturing, and assembly expertise. Together we can support all our customers with more engineering expertise, broader capabilities, and extensive manufacturing resources. Since 1982, CVI Infrared Optics has been manufacturing advanced optical components for high performance optronics systems. We have become the leading experts in manufacturing and integration of large optics from visible, and near infrared, to longwave infrared, that can continuously perform in extreme weather climates and harsh conditions.
When you need robust optical components and assembly expertise for your mission critical application, we can provide world-class solutions."
**Mission of the Role:**
Determine technical compliance & provide cost estimates for the project, product or service. Researching the prices of the various components involved, acquiring the relevant quotes from vendors and contractors in addition to calculating internal processing costs. Support the Commercial & Engineering teams with proposals, understanding the customer's specifications and calculating the final budget for the project, product or service.
**Primary Responsibilities:**
Obtain and understand the customers' requirements, removing all ambiguity via written or verbal communications
Read, analyse and understand customer technical drawings and specification documents
Lead complex quote processes with Commercial and Engineering teams, along with Purchasing & our suppliers
Build and present our technical and cost proposals to the commercial team (and customers where necessary) in a clear and concise manner
Upon order receipt, clearly communicate the planned route to Engineering & Manufacturing departments to allow for a smooth transition for order execution
**Other Duties and Responsibilities:**
Understand key customers' products and services
Keep informed of supplier capabilities, pricing and performance
Drive the correct 8020 assessment of opportunities and plan workload accordingly
Respond to customers and co-workers in a timely and professional manner
Communicate company and product values to prospective customers via formal and informal presentations, meetings and communications
Identify competitors' strengths and weaknesses
Attend trade shows or appropriate events to gain a broader insight on industry trends, players and technology drivers
Comply with health and safety policies and procedures
Support company values including ethical conduct and high integrity in all actions
**What you'll get in return:**
Competitive salary
25 days annual leave plus Bank Holidays
Company bonus scheme
Company Pension Scheme
Healthcare
On site benefits
This job position requires compliance with EU and/or UK Regulations. Therefore, all employees working in this capacity must meet EU and/or UK citizenship status
**Job Family:** Engineering
**Business Unit:** CVI

About 9fin

The world's largest asset class, debt, operates with the worst data.

Technology has revolutionized equity markets with electronic trading, quant algos and instantaneous news. However, in debt capital markets, the picture is completely different. It still behaves like it’s in the 1980s; trillions of dollars of trades are placed over the phone, news is slow, and corporate credit information is imperfect and scattered.

Our mission is to change this.

9fin's proprietary technology delivers fast and comprehensive financial, credit, legal & ESG analysis. Our clients are able to make faster, more informed decisions, win more business and most importantly, save time.

Our fast growing list of clients include 9 of the top 10 Investment Banks, leading Asset Managers, Hedge Funds and Law Firms.

What you'll work on

• This role is the opportunity to take on the technical leadership on projects, defining and designing systems, making quick proof of concepts and working closely with Product and our Clients.
• Write code and lead others in the team in delivering new service functionality, implementing API’s, data routing/processing and automation mechanisms.
• Development and engineering primarily on the backend services and web application hosted tools and systems of the 9fin platform.
• Taking a leading role within project teams as a senior IC, running code reviews and mentoring of junior developers, involvement in early research and experimentation with new technologies providing input for new features and products.
• Continually improve on the 9fin codebase taking the chance to automate, refactor and document when you can.
• Variety: Our web platforms are incredibly diverse, from complex financial data modelling, capturing environmental, emission, energy data, incorporation of ML/AI prediction services, data visualisation serving and automation systems.
• Collaboration and teamwork: Cross functional teams are formed for all projects including the appropriate domain expertise from 9fin financial, legal and editorial colleagues. This allows the best quality information and feedback to go directly to engineering project teams. Your ability to explain and break down complex projects to non technical audiences will enable productive and efficient team progress.
• Developer Experience: Through managed automated preview environments, feature flags and well maintained non production environments. You will be able to move with velocity and get feedback and iterate quickly.

Our Backend Stack

• Python is the dominant backend language used
• Flask & FastAPI
• Typing is used within our Python stack to power automated documentation and API definitions
• Relational Databases (PostgreSQL) at the heart of majority of services
• We’re AWS for Cloud hosted services
• Heavy use of AWS lambda Serverless
• Docker (AWS ECS) for uniform development/deployment from dev to prod

Requirements

This role will be a great fit if you:

• Can effectively plan and reason about your software, understanding where it fits into systems and the overall business
• Can think about how data will pass through your software; from persistent storage through to API endpoint
• Experience with Python and its web frameworks (we currently use Flask, and are moving to FastAPI with Typing)
• Strong experience delivering APIs, Service Oriented Architecture
• Good working knowledge of SQL statements for retrieving data
• A good collaborator and communicator with cross functional engineering teammates and others within 9fin
• Code Quality: Through writing testable, maintainable code, and by engaging in code review for your own work and for reviewing others

Benefits

We’re a scaling start up and we enjoy sharing our success, when the company succeeds, we always reinvest that in our people. We also offer huge amounts of responsibility, an abundance of opportunity for growth and a platform to truly excel.

Financial & Insurance

• Competitive Salary(our salary bands are benchmarked at the top end of the market)
• Equity options
• Pension (your minimum contributions are 4% with 9fin matching up to 7%)
• Private Medical Insurance
• Paid sick leave with Income Protection for long periods of illness
• Group Life Assurance
• Season Ticket Loan & Cycle to Work schemes

Time off

• 25 holiday days per year
• Local public holidays (with the ability to exchange them for alternative days)
• Hybrid working model, to allow you the flexibility to decide how, where and when you do your best work
• Work abroad for up to 3 months a year
• 1 month paid sabbatical after 5 years of service
• Enhanced parental leave & flexible working arrangements available

Training & Culture

• Professional learning and development budget
• Quarterly team socials
• Summer and Winter company social events

9fin is an equal opportunities employer

Don’t meet every single requirement? At 9fin we are dedicated to building and promoting a fair and inclusive workplace where everyone can flourish, reach their full potential and truly belong. We recognise diverse teams allow a more creative and productive environment. So, if you’re excited about this role but your experience doesn’t perfectly align with the job description, we encourage you to apply anyway. You might just be who we’re looking for - for this role, or perhaps another.

Our client is a global leader in HVAC and refrigeration technology, recognised for delivering innovative, high-performance solutions across food retail, industrial, and commercial applications. They are now looking for an Application Sales Engineer to join their UK team at their Chessington office. This is an office-based role that combines customer support, technical application design, and internal collaboration. You will be responsible for providing pre- and post-sales technical support, preparing proposals, and working closely with both the sales team and clients to ensure the correct specification of products and solutions. Key Responsibilities: Provide technical and commercial support to sales teams and customers Prepare project proposals, quotations, and product selections using internal tools Assist with HVAC/R application design and specification Support customers with queries on product performance, controls, and integration Liaise with internal teams across sales, technical, service, and operations to deliver solutions Manage project pipelines and update CRM systems Contribute to continuous improvement, efficiency, and customer satisfaction What We’re Looking For: Previous experience in a technical support or application engineering role, ideally within HVAC or refrigeration Strong technical understanding of refrigeration and air conditioning systems, including CO₂ and industrial applications Knowledge of thermodynamics, psychrometrics, and associated control systems is highly beneficial Ability to communicate technical concepts clearly to customers and colleagues Competency in proposal writing and use of CRM or project tracking systems A proactive, problem-solving approach and willingness to work collaboratively Why Join? Be part of a globally respected manufacturer with a strong UK presence Office-based role offering stability and close collaboration with the wider UK team Blend of technical engineering support with commercial exposure Long-term career development opportunities within a global group For further information on this role, please contact Kyle Zanninello on or via email at .

Our client is a global leader in HVAC and refrigeration technology, recognised for delivering innovative, high-performance solutions across food retail, industrial, and commercial applications. They are now looking for an Application Sales Engineer to join their UK team at their Chessington office.

This is an office-based role that combines customer support, technical application design, and internal collaboration. You will be responsible for providing pre- and post-sales technical support, preparing proposals, and working closely with both the sales team and clients to ensure the correct specification of products and solutions.

Key Responsibilities:

• Provide technical and commercial support to sales teams and customers
• Prepare project proposals, quotations, and product selections using internal tools
• Assist with HVAC/R application design and specification
• Support customers with queries on product performance, controls, and integration
• Liaise with internal teams across sales, technical, service, and operations to deliver solutions
• Manage project pipelines and update CRM systems
• Contribute to continuous improvement, efficiency, and customer satisfaction

What We’re Looking For:

• Previous experience in a technical support or application engineering role, ideally within HVAC or refrigeration
• Strong technical understanding of refrigeration and air conditioning systems, including CO₂ and industrial applications
• Knowledge of thermodynamics, psychrometrics, and associated control systems is highly beneficial
• Ability to communicate technical concepts clearly to customers and colleagues
• Competency in proposal writing and use of CRM or project tracking systems
• A proactive, problem-solving approach and willingness to work collaboratively

Why Join?

• Be part of a globally respected manufacturer with a strong UK presence
• Office-based role offering stability and close collaboration with the wider UK team
• Blend of technical engineering support with commercial exposure
• Long-term career development opportunities within a global group

For further information on this role, please contact Kyle Zanninello on or via email at .

Job Description

Our client is a global leader in HVAC and refrigeration technology, recognised for delivering innovative, high-performance solutions across food retail, industrial, and commercial applications. They are now looking for an Application Sales Engineer to join their UK team at their Chessington office.

This is an office-based role that combines customer support, technical application design, and internal collaboration. You will be responsible for providing pre- and post-sales technical support, preparing proposals, and working closely with both the sales team and clients to ensure the correct specification of products and solutions.

Key Responsibilities:

• Provide technical and commercial support to sales teams and customers
• Prepare project proposals, quotations, and product selections using internal tools
• Assist with HVAC/R application design and specification
• Support customers with queries on product performance, controls, and integration
• Liaise with internal teams across sales, technical, service, and operations to deliver solutions
• Manage project pipelines and update CRM systems
• Contribute to continuous improvement, efficiency, and customer satisfaction

What We’re Looking For:

• Previous experience in a technical support or application engineering role, ideally within HVAC or refrigeration
• Strong technical understanding of refrigeration and air conditioning systems, including CO₂ and industrial applications
• Knowledge of thermodynamics, psychrometrics, and associated control systems is highly beneficial
• Ability to communicate technical concepts clearly to customers and colleagues
• Competency in proposal writing and use of CRM or project tracking systems
• A proactive, problem-solving approach and willingness to work collaboratively

Why Join?

• Be part of a globally respected manufacturer with a strong UK presence
• Office-based role offering stability and close collaboration with the wider UK team
• Blend of technical engineering support with commercial exposure
• Long-term career development opportunities within a global group

For further information on this role, please contact Kyle Zanninello on or via email at .

Senior Software Engineer/SRE - Application Middleware
Location
London
Business Area
Engineering and CTO
Ref #

**Description & Requirements**
Are you passionate about building high-performance systems that are fast, resilient, and operate at global scale? Join Bloomberg's Application Middleware SRE team, where you'll combine software engineering and systems expertise to keep the backbone of the Bloomberg Terminal running smoothly for hundreds of thousands of users around the world.
We're not your typical SRE team. We're embedded in a group that powers real-time connectivity, and we own systems where uptime isn't just important-it's essential to the global financial system. This is your opportunity to engineer resilience at scale, automate critical infrastructure, and shape reliability practices across one of the world's most powerful tech platforms.
**The Team**
We're the Site Reliability Engineering team within Bloomberg's Application Middleware group. Our mission: ensure that Bloomberg's core connectivity and messaging layers are resilient, scalable, and fully observable.
We own systems that operate at high throughput and low latency, including:
+ Gateways: Secure, high-performance TCP/SSL entry points to our data centers
+ HFN & NSTP: A global HTTP CDN and SOCKS5 proxy network delivering fast access from any geography
+ Playlist Services: Dynamic path configuration systems optimizing user connectivity in real-time
+ PGM Relays: Infrastructure for reliable multicast data delivery
We use automation, observability, and software engineering to detect issues before they impact customers and reduce manual toil wherever we can.
**What You'll Do**
+ Build production-grade software that powers Bloomberg's global infrastructure
+ Design and implement scalable, fault-tolerant systems with a focus on observability, performance, and automation
+ Collaborate across engineering teams to introduce automated, self-service operational workflows
+ Conduct deep systems analysis and root cause investigations for complex, distributed systems
+ Propose and prototype innovative approaches to reliability and risk mitigation
+ Contribute to design docs, runbooks, and post-incident reviews-clear communication is part of the job
**You'll Need to Have**
+ A degree in Computer Science, Engineering, Mathematics, or equivalent practical experience
+ Strong software engineering skills in any high-level language (we mainly use Python and C++)
+ A deep understanding of software system reliability and risk management-including how to identify potential points of failure and design mitigation strategies.
+ A good understanding of data structures, algorithms, and system design
+ Experience navigating and improving large, distributed codebases
+ An ability to identify system risks and engineer around points of failure
+ Clear written and verbal communication, including technical documentation and incident analysis
**We'd Love to See**
We are building a team with a breadth of expertise and value depth in any of the following areas:
+ Systems Knowledge: A strong grasp of operating systems, fundamental networking protocols (TCP, UDP, multicast), or core database concepts as they apply to modern infrastructure.
+ Cluster Management: Experience with deployments, staging, and configuration management. Direct experience with Argo and/or Kubernetes or other Pipeline Management Platforms is a significant advantage.
+ Machine Management at Scale: Experience with capacity planning and automating the lifecycle of large machine fleets.
+ System Observability and Monitoring: Deep understanding of SLIs/SLOs/SLAs, alerting, and building dashboards for complex systems.
+ Reliability in Distributed Systems: Knowledge of fault tolerance and the unique challenges of network and node failure in distributed environments.
+ Mentoring: Proven experience mentoring and growing junior Engineers
Bloomberg is an equal opportunity employer and we value diversity at our company. We do not discriminate on the basis of age, ancestry, color, gender identity or expression, genetic predisposition or carrier status, marital status, national or ethnic origin, race, religion or belief, sex, sexual orientation, sexual and other reproductive health decisions, parental or caring status, physical or mental disability, pregnancy or parental leave, protected veteran status, status as a victim of domestic violence, or any other classification protected by applicable law.
Bloomberg is a disability inclusive employer. Please let us know if you require any reasonable adjustments to be made for the recruitment process. If you would prefer to discuss this confidentially, please email

Senior Software Engineer | Hybrid | London We are hiring for an innovative analytics software company powering global credit investment is expanding its engineering team and looking for a Senior Software Engineer to help shape its next generation of data products. This is a unique opportunity to influence the technical roadmap at a high-growth fintech scale-up working with top-tier global financial institutions. The role involves building and scaling backend systems in Node.js and Python, deploying on AWS (Lambda, DynamoDB, PostgreSQL), and collaborating closely across engineering, product, and customer teams. Ideal Candidate: Proven experience with backend/fullstack development using Node.js , Python , and AWS serverless architecture Strong database design skills (PostgreSQL, DynamoDB, Elasticsearch) Familiarity with frontend frameworks like Vue or React Comfortable mentoring developers and influencing technical direction Experience in financial services or a data-heavy B2B environment is a plus Tech Stack: Node.js , Python , AWS (Lambda, DynamoDB, CloudWatch, CloudFormation), PostgreSQL, Elasticsearch, Terraform Location: Hybrid, based in London (Victoria) — flexible home/office split Please apply now!

Software Engineer - Python/C++ - Up to £140,000 Base Salary - 2 years experience One of the most successful and profitable systematic trading firms are looking for the next generation of talented engineers to invest in. You would get the opportunity to work side by side with some of the most gifted and knowledgable teams across London. You'll get the opportunity to build distributed, low-latency, high performance systems with reliable and scalable back-ends which are powering critical trading operations. You will be driving the design and implementation of trading frameworks, market data solutions and global market connectivity. As well as massively parallel, high-volume distributed applications to enable the technology to scale concurrently with company growth. Required Qualifications/skills: Degree in Computer Science or related field. 3 years commercial experience in a relevant role such as software or quantitative engineering. Strong programming skills in either Python or Java. In depth understanding of Complexity Theory, Data Structures and Algorithm design. Benefits: Top of the market compensation package. Uncapped bonuses. Private Health Care 25 days annual leave Pension contribution Training budget allocation Free Lunch and snacks in the office. And many more!

Software Engineer - Python/C++ - Up to £140,000 Base Salary - 2 years experience One of the most successful and profitable systematic trading firms are looking for the next generation of talented engineers to invest in. You would get the opportunity to work side by side with some of the most gifted and knowledgable teams across London. You'll get the opportunity to build distributed, low-latency, high performance systems with reliable and scalable back-ends which are powering critical trading operations. You will be driving the design and implementation of trading frameworks, market data solutions and global market connectivity. As well as massively parallel, high-volume distributed applications to enable the technology to scale concurrently with company growth. Required Qualifications/skills: Degree in Computer Science or related field. 3 years commercial experience in a relevant role such as software or quantitative engineering. Strong programming skills in either Python or Java. In depth understanding of Complexity Theory, Data Structures and Algorithm design. Benefits: Top of the market compensation package. Uncapped bonuses. Private Health Care 25 days annual leave Pension contribution Training budget allocation Free Lunch and snacks in the office. And many more!