16 backend engineer jobs found

About nsave nsave is a fintech company headquartered in London. Founded by Amer Baroudi and Abdallah AbuHashem, our vision is to "Protect and grow the wealth of the financially excluded". We have built a global platform that provide trusted USD accounts, global payments, and investments for individuals from distressed economies, where inflation is high and banking systems are unstable. Our compliance-by-design approach and proprietary technology allow us to deliver these services securely and at scale. To date, nsave has raised $22M from leading investors including Sequoia Capital, TQ Ventures, Y Combinator, and SV Angel. Our team has grown 200% in the last year, and with so much more ahead, we're just getting started! Learn more at www.nsave.com . Location: Egypt (Cairo preferred) Engagement Type: Independent Contractor About the Role As our Backend Engineer , you will build and scale the infrastructure powering nsave's financial services. Working...

Senior Generative AI Scientist – Agentic AI & Multi-Agent Systems London (Hybrid, 3 days onsite) Contract (Inside IR35) or Fixed-Term Employment   UST is seeking a hands-on Senior Generative AI Scientist to design, build, and deploy production-grade AI solutions that solve real business problems. You will work with engineering teams, AI specialists, and business stakeholders to deliver scalable agentic AI systems, multi-agent workflows, and enterprise GenAI applications.   The Role: Design and develop multi-agent AI systems and orchestration workflows Build production-ready LLM applications and AI-powered automation solutions Develop and optimise RAG pipelines, retrieval architectures, and vector search solutions Build Python-based APIs, microservices, and orchestration services Design asynchronous, event-driven workflows and integrations Implement AI guardrails, evaluation frameworks, observability, and monitoring...

Role description Senior Generative AI Scientist – Agentic AI & Multi-Agent Systems London (Hybrid, 3 days onsite) Contract (Inside IR35) or Fixed-Term Employment   UST is seeking a hands-on Senior Generative AI Scientist to design, build, and deploy production-grade AI solutions that solve real business problems. You will work with engineering teams, AI specialists, and business stakeholders to deliver scalable agentic AI systems, multi-agent workflows, and enterprise GenAI applications.   The Role: Design and develop multi-agent AI systems and orchestration workflows Build production-ready LLM applications and AI-powered automation solutions Develop and optimise RAG pipelines, retrieval architectures, and vector search solutions Build Python-based APIs, microservices, and orchestration services Design asynchronous, event-driven workflows and integrations Implement AI guardrails, evaluation frameworks,...

Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial...

3-4 days per week, hybrid work policy in central London office We're looking for a freelance product engineer to join us between June and October 2026, working primarily on wonderbly.com with a focus on driving growth into Q4. This is a hands-on role. The work involves close collaboration with the VP product and other teams to solve deep customer experience challenges around our Kids and Keepsake landing pages and journeys, in order to unlock growth in these key areas for the business. You'll be working within a small, focused team — and at least some of the time, with a fair amount of autonomy. We're not looking for someone to execute a perfect brief. We're looking for someone with the judgment to help us figure out the right thing to build, and then build it well. A few things that are important to us The work you're doing feeds directly into beautifully made, deeply personal books that people treasure. People’s perception of quality has to be...

Location: London (Hybrid – 3 days onsite, mandatory) Employment Type : Permanent | Fixed-Term Contract | Contract (Inside IR35) Start Date : Immediate/ Short Notice period About the Role We are seeking a Senior AWS Application & Platform Engineer to help design and build cloud-native applications, developer platforms and AI-enabled engineering capabilities from the ground up.   This is a highly hands-on engineering role combining AWS application development, serverless and event-driven architecture, Python, Generative AI, developer tooling and automation.   You will build APIs, reusable application patterns, developer accelerators and AI-enabled services that help engineering teams deliver software more efficiently, securely and consistently.   Key Responsibilities Design and build cloud-native applications, APIs and platform services on AWS. Develop serverless and event-driven solutions using AWS Lambda, API...

Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial...

We’re looking for an EPOS & SCO Platform Engineer to build, configure, and support the in-store point of sale and self-checkout platforms across the estate. You’ll own the full lifecycle of Travel Money Kiosks, EPOS and Hospitality infrastructure, including till hardware, self-checkout units, peripherals, and backend systems—ensuring services are secure, compliant, resilient, and consistently deployed at scale. You’ll automate provisioning, configuration, updates, and monitoring so stores benefit from reliable transaction processing, seamless customer journeys, and minimal downtime. Success means stable retail operations, predictable performance, and confidence from store colleagues, product owners, and operations teams. This is a hybrid role where 3 days per week are expected on site in Bracknell. Requirements Role Responsibilities: Design, build, and maintain EPOS and SCO infrastructure (Tills, Self-Checkouts, peripherals,...

We’re looking for an EPOS & SCO Platform Engineer to build, configure, and support the in-store point of sale and self-checkout platforms across the estate. You’ll own the full lifecycle of Travel Money Kiosks, EPOS and Hospitality infrastructure, including till hardware, self-checkout units, peripherals, and backend systems—ensuring services are secure, compliant, resilient, and consistently deployed at scale. You’ll automate provisioning, configuration, updates, and monitoring so stores benefit from reliable transaction processing, seamless customer journeys, and minimal downtime. Success means stable retail operations, predictable performance, and confidence from store colleagues, product owners, and operations teams. This is a hybrid role where 3 days per week are expected on site in Bracknell. Requirements Role Responsibilities: Design, build, and maintain EPOS and SCO infrastructure (Tills, Self-Checkouts, peripherals,...

Salary £400 - £425 Outside IR35 City London Province Greater London Country United Kingdom Postal Code E14 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to build innovative digital services that truly make a difference. Role Purpose We are looking for an experienced Backend Developer to design, build, and maintain scalable, secure server-side services and APIs, while contributing to the adoption of Agentic AI capabilities within our engineering platform. The role sits at SFIA Level 4 : the individual works under general direction, uses discretion in resolving problems, plans and monitors their own...

Opticore IT is a specialist Network Engineer and Project Management consultancy offering a wide variety of opportunities to work within fast-paced, challenging environments across our client base spanning multiple sectors, including Finance, Broadcast Media, Telecommunications and more. Opticore IT are currently searching for Platform Engineers with strong AWS, CloudFormation and PowerShell experience. You'll join our excellent team, based in the London area, with 2 days a week on-site. This is a 6-month contract, inside IR35, with scope to extend. This is an 18 - 24 month project. A bit about the opportunity: Evolve and operate the Enterprise Platform product set across AWS, Azure, GCP and on-premise workloads, driving automation-first engineering to keep corporate application hosting efficient, stable and secure while continuously reducing manual toil. What you'll be doing: Provision, scale and optimise infrastructure across AWS, Azure and GCP, spanning IaaS,...

Mindera are currently looking for an experienced Tech Lead to operate within a Platform Enablement team in the retail sector. This will be a small team that looks after capabilities that are shared across products and channels. For this role, previous experience with CRMs is essential, ideally Clavio but not limited to. Requirements Strong software engineering expertise – deep backend development experience, building scalable APIs and microservices; broader experience with technologies such as Node.js, TypeScript or React is beneficial. Architecture & system design – proven ability to design and evaluate scalable services and integrations, applying appropriate architecture patterns while balancing product goals, security, reliability and long-term system health. Cloud, DevOps & Infrastructure as Code – hands-on experience building and operating cloud-native solutions in AWS, using modern CI/CD practices and Infrastructure as Code, ideally...

Mindera are currently looking for an experienced Tech Lead to operate within a Platform Enablement team in the retail sector. This will be a small team that looks after capabilities that are shared across products and channels. For this role, previous experience with CRMs is essential, ideally Clavio but not limited to. Requirements Strong software engineering expertise – deep backend development experience, building scalable APIs and microservices; broader experience with technologies such as Node.js, TypeScript or React is beneficial. Architecture & system design – proven ability to design and evaluate scalable services and integrations, applying appropriate architecture patterns while balancing product goals, security, reliability and long-term system health. Cloud, DevOps & Infrastructure as Code – hands-on experience building and operating cloud-native solutions in AWS, using modern CI/CD practices and Infrastructure...

Salary £400 - £425 Outside IR35 City London Province Greater London Country United Kingdom Postal Code E14 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to build innovative digital services that truly make a difference. Role Purpose We are looking for an experienced Backend Developer to design, build, and maintain scalable, secure server-side services and APIs, while contributing to the adoption of Agentic AI capabilities within our engineering platform. The role sits at SFIA Level 4 : the individual works under general direction, uses discretion in resolving problems, plans and monitors their own...

Mindera are currently looking for an experienced Tech Lead to operate within a Platform Enablement team in the retail sector. This will be a small team that looks after capabilities that are shared across products and channels. For this role, previous experience with CRMs is essential, ideally Clavio but not limited to. Requirements Strong software engineering expertise – deep backend development experience, building scalable APIs and microservices; broader experience with technologies such as Node.js, TypeScript or React is beneficial. Architecture & system design – proven ability to design and evaluate scalable services and integrations, applying appropriate architecture patterns while balancing product goals, security, reliability and long-term system health. Cloud, DevOps & Infrastructure as Code – hands-on experience building and operating cloud-native solutions in AWS, using modern CI/CD practices and Infrastructure...

Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to build innovative digital services that truly make a difference. Role Purpose We are looking for an experienced Backend Developer to design, build, and maintain scalable, secure server-side services and APIs, while contributing to the adoption of Agentic AI capabilities within our engineering platform. The role sits at SFIA Level 4 : the individual works under general direction, uses discretion in resolving problems, plans and monitors their own work (and may guide junior colleagues informally), and understands how their work contributes to broader team and organisational objectives....