Full Stack Developer - FinTech
On site
Newcastle Upon Tyne, United Kingdom
£ 150,000 / year
Full Time
25-04-2025
Job Specifications
Full Stack Developer / Engineer (JavaScript Node C#) Newcastle onsite to £150k+
Do you have expertise with modern full stack software engineering, from complex, scalable backend systems, APIs and DevOps / deployment through to creating engaging user interfaces?
You could be progressing your career in a hands-on Full Stack Developer role, working on complex and interesting systems at a FinTech start-up, they have secure backing and an established Hedge Fund client as a partner. This is an excellent opportunity to join a scaling tech company with excellent salary and career progression.
As a Full Stack Developer you'll be building complex financial trading systems using a range of technology including JavaScript, Node, C#, SQL, Docker and Kubernetes.
You'll collaborate with various teams to develop features that enhance the overall user experience, focusing on usability, accessibility and performance as well as designing and implementing the core logic that drives the applications and ensuring that testing is integral to the CI/CD pipeline.
Location:
You'll join colleagues in brand new Central Newcastle offices on a full-time basis (Monday to Friday), working hours 0900-1800 with some flexibility. The offices are well equipped and offer fantastic views across the City and the local countryside, many employees walk or cycle in (onsite showers available!).
About you:
You have advanced Software Engineering experience across the full tech stack, having used a range of technology and happy to work with the following: JavaScript, Node, C#, Docker, Kubernetes Github
You have a strong knowledge of SQL databases
You have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design Patterns, Algorithms
You're entrepreneurial with good business acumen, keen to take ownership and lead projects
You're collaborative, enjoy problem solving and sharing ideas
You have an outstanding record of academic achievement - minimum 2.1 in a STEM discipline from a top tier university (i.e. Russel Group or top 100 global university), backed by A grades at A-level
What's in it for you:
As a Full Stack Developer / Engineer you will earn a competitive package:
Salary (to £150k, negotiable)
Bonus
25 days holiday
Bupa healthcare
Generous pension contribution
Continuous career development opportunities
Social team atmosphere with a range of events and early finish for drinks on Fridays
Apply now to find out more about this Full Stack Developer / Engineer (JavaScript Node C#) opportunity.
At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.
About the Company
At Client Server, we are driven by technology and powered by people. We are a leading technology recruitment consultancy, specialising in a vast range of technology roles in London, the UK, Europe, and the USA. Our focus is finding exceptional candidates for exceptional organisations. These include technology leaders, innovative start-ups, hedge funds, banks and consultancies. Know more
Related Jobs
- Company Name
- Citi
- Job Title
- Java Developer - Equity Finance - VP
- Job Description
- What We Do / The Team The Equity Finance Technology team are seeking a development role for the Trading application, located in London. The role requires working with technologists across geographical locations and executing on the technical delivery. This role requires strong expertise in Java and the ability to work with traders in building business solutions through agile delivery. Responsibilities: Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint Utilise advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions Serve as adviser or coach to mid-level developers and analysts, allocating work as necessary Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgement regarding personal behaviour, conduct and business practices, and escalating, managing and reporting control issues with transparency. Qualifications: Extensive experience system analysis and in programming of software applications Experience in managing and implementing successful projects Subject Matter Expert (SME) in at least one area of Applications Development Ability to adjust priorities quickly as circumstances dictate Key Skills And Experience Required Extensive development experience Proven Technical skills in Java, Kafka, SQL, Git Experience in performing QA Proven ability to work in high pressure environment Flexibility to work with a global team, across geographies and time zones Strong problem-solving skills and ability to think strategically Familiarity with agile methodologies. Excellent interpersonal and communication skills with the ability to manage stakeholder expectations Any Beneficial / Nice to have skills and experience: React and full stack development Knowledge of Prime Services is a plus Bachelor's or Master's degree in Computer Science, Information Technology, or related field. This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required. What We’ll Provide You By joining Citi London, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as: 27 days annual leave (plus bank holidays) A discretional annual performance related bonus Private Medical Care & Life Insurance Employee Assistance Program Pension Plan Paid Parental Leave Special discounts for employees, family, and friends Access to an array of learning and development resources Visit our Global Benefits page to learn more. Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive. ------------------------------------------------------ Job Family Group: Technology ------------------------------------------------------ Job Family: Applications Development ------------------------------------------------------ Time Type: Full time ------------------------------------------------------ Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law. If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi. View Citi’s EEO Policy Statement and the Know Your Rights poster.
- Company Name
- Spinks
- Job Title
- Senior Python Developer
- Job Description
- Python masters, we need your magic I am looking for Senior Python Developers based in the Leeds area to join an exciting consultancy as they continue to grow. In this role, you will serve as a Senior Consultant to deliver expert guidance on software engineering practices both internally and external with clients. Skills and experience that you need: *5+ years Python experience *Experience in AWS Serverless (Lambda, DynamoDB ect.) *Proficient in designing and developing both native and web applications *Previous experience of working for Consultancy/ Public Sector would be highly desirable What they offer: *Salary range - £50-70k p/a *Hybrid Working model – Up to 2 days in the Office/ On-site *25 days Annual Leave + Bank Holidays *Perkbox access for wide range of discounts *Private Health & Dental Insurance *Attractive Pension Scheme Apply now for immediate consideration!
- Company Name
- Simple Machines
- Job Title
- Senior Software Engineers - Full-stack
- Job Description
- Simple Machines is a leading independent boutique technology firm with a global presence, including teams in London, Sydney, San Francisco, and New Zealand. We specialise in creating technology solutions at the intersection of data, AI, machine learning, data engineering, and software engineering. Our mission is to help enterprises, technology companies, and governments better connect with and understand their organisations, their people, their customers, and citizens. We are a team of creative engineers and technologists dedicated to unleashing the potential of data in new and impactful ways. We design and build bespoke data platforms and unique software products, create and deploy intelligent systems, and bring engineering expertise to life by transforming data into actionable insights and tangible outcomes. We engineer data to life™. As a Senior Software Engineer at Simple Machines, you'll be at the heart of groundbreaking projects, collaborating closely with both our talented internal team and forward-thinking clients. In this hands-on role, you'll drive the development of sophisticated, scalable solutions across the full technology stack—from intuitive frontends and robust backends to powerful data pipelines and resilient infrastructure. If you're passionate about solving complex problems and pushing the boundaries of what's possible, this role offers the perfect platform for you to make a real impact. About our incredible team: We believe diverse perspectives fuel innovation. Our team is made up of talented engineers from different backgrounds, each bringing unique strengths. We collaborate across the full stack, supporting and learning from one another to create world-class solutions. You'll have the autonomy to shape technical design, work closely with stakeholders, and engage with data scientists and cross-functional teams to craft seamless, high-performance systems. We're committed to fostering an inclusive and equitable workplace where everyone—regardless of background, identity, or experience—can thrive. If you're passionate about pushing boundaries, solving complex challenges, and being part of a forward-thinking team, we want to hear from you! Technical Responsibilities: Responsible for design and technical development of backend services for a highly scalable marketing platform Responsible for designing the APIs, applications, and infrastructure the team develops, and documenting the technical requirements and design for the client Responsible for end-to-end delivery and support, including build, automation, deployment, and operations, for everything that is developed Partner with client stakeholders, and team members, to gather business requirements, collaborate on design decisions, and translate them into technical and design requirements Operate within an iterative delivery team using Agile delivery tools and practices Hybrid remote and in-person collaboration with the delivery team and client stakeholders Requirements Technical background A consultative approach to software development. (Ideally experience in the Software Consulting space) Core foundation in programming, especially in JVM languages (particularly Kotlin or Java) Experience designing and implementing data-driven APIs Exposure to frontend development (particularly React.js, Tailwind, REDUX, Typescript) Past project experience with large scale webservices Cloud infrastructure experience with AWS and/or Google Cloud, Azure, etc Infrastructure-as-code experience, such as with Terraform or Cloud Formation In-depth experience with unit and integration testing, and test automation generally. Ideally TAA and/or BDD Experience working with SQL databases in the context of implementing data-driven APIs, and designing database schemas and queries to meet business requirements A passion and proven background in picking up and adopting new technologies on the fly Exposure to Scala, or functional programming generally Exposure with highly concurrent, asynchronous backend technologies, such as Ktor, http4k, http4s, Play, RxJava, etc Exposure with DynamoDB or similar NoSQL databases, such as Cassandra, HBase, BigTable, or Cosmos DB Exposure with Git workflows, and the ability to tailor the workflow to project needs Exposure with containerised application deployment using Docker, Amazon ECS, Kubernetes, etc
- Company Name
- Revolution Technology Ltd
- Job Title
- Frontend Developer
- Job Description
- Mid-Level Frontend Engineer (React) I'm looking for a Frontend Engineer to join a fintech start up that are automating underwriting and making it less complex! This is a mid level position and a great opportunity to grow and develop within the team. The Role: Develop scalable Frontend systems using Typescript, React and Next Convert Figma designs from code Take full ownership of end to end development They are looking for: Minimum 2 years commercial experience Experience with React, Next, Figma & Typescript Experience in start-up environments Ideally fin tech experience Key Details: Location: Fully remote, UK/Europe Salary: £45k-£55k Tech stack: React, Next, Figma, Typescript, Tailwind Please apply for more details!