479 Devops jobs in London

As our DevOps Engineer, you will be helping us build and maintain blockchain networks and protocols. You will work on improving our current infrastructure including security, automation, and monitoring among other things. You will also have the chance to dive deep into new blockchain protocols, run testnets, build secure and scalable infra and maintain it.

What will you do?

• Build secure and reliable infrastructure to monitor, detect and mitigate performance and security issues
• System administration activities for Linux servers, which includes routine, proactive daily management of the health, stability, and availability of system infrastructure
• Create and maintain system procedural and technical documentation
• Stay up to date and build on peer-to-peer networking security best practices
• Create, maintain and communicate threat models + risk assessments for all systems we operate

What excites us about you?

• You have experience as DevOps/SRE/Infrastructure engineer
• You have the ability to program in one or more languages like Python, GoLang, Bash or Javascript
• You have experience managing server infrastructures with high availability requirements
• You had designed secure networks, systems, and application architectures
• You had set up and maintained software in both data centers and cloud environments
• You have a deep understanding of sockets, full networking stack, and Linux security
• You possess the knowledge of building automation and CI/CD processes and tools
• You are experienced with Docker, Kubernetes, and other cloud deployment technologies
• You have flexibility, teamwork, and you are comfortable with ambiguity, able to take charge and get things done despite the unknowns

What will be great to have?

• You have an understanding of the blockchain space and blockchain technology
• You possess knowledge of cryptography and security best practices
• You have contributions to open source communities

If those describe you, this is the right opportunity for you!

Why are we awesome you ask?

We are truly at the forefront of the crypto ecosystem as maintainers of the infrastructure layer of blockchain networks! We practice the crypto team mentality by assembling a truly global and diverse team.

We collectively represent more than 12 different countries and are united in a single mission: building out the future of decentralization. Crypto is here to stay, having introduced novel ideas such as DeFi, NFTs and DAOs. At the core of all this are teams like us working relentlessly to build the necessary tools and applications that help run and secure blockchains.

Here are some other reasons you should join us:

• We have employees from over 10 countries across the globe, and you will be able to meet interesting people from different backgrounds and cultures. Distributed and remote work is baked into our culture.
• We are one of the top staking service providers with over $3B of assets staked across our validators. We actively explore and develop new products related to staking. You will work on high-impact engineering projects building exciting new products in a startup environment.
• We have a capable and passionate team. You will find teammates who are power DeFi users, intense NFT collectors, Bitcoin & Ethereum knowledge nerds, etc. You can learn and debate everything on crypto with our teammates.
• We are not backed by VC funding, and we are already profitable. Our financial independence means that we can make decisions independent of VCs, and we prioritize our ideals of decentralization, user sovereignty, and user privacy over simply making a profit. It also means that, unlike most other startups, stakefish can provide you with a stable low-risk employment opportunity without fundraising concerns.

**Our Purpose**
_Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential._
**Title and Summary**
Senior Software Engineer (DevOps) Real Time Payments
Overview
Mastercard's Real Time Payments team is looking for an enthusiastic Senior Software Engineer with DevOps focus to work on our RTP Global Product. RTP is part of the payment rails critical infrastructure of a country and operates in 9 countries with a 20 year pedigree of evolution.
We see DevOps as a collection of philosophies, practices and tooling that enable the quick delivery of high-quality software. An ideal candidate will have a strong understanding of the Software Development Life Cycle (SDLC) and a desire to continuously improve their own skills and the people around them. Together, you will be part of a high performing team who work together to deliver complex projects through agile methodologies.
Role
We demonstrate 'Mastercard values every day - create value, grow together, move fast, & do the right thing. As a Senior Software Engineer at Mastercard, you are expected to carry out the following general duties:
- Work collaboratively on complex problems which have dependencies across services.
- Design and develop solutions to meet the business requirements/enhancements.
- Help make our engineering teams more effective and efficient optimizing the SDLC.
- Identify opportunities for automation in tasks and software delivery.
- Help drive our engineering culture through mentoring, assisting peers and a relentless focus on developer experience. Participate in the Software Engineering Guild and special interest groups.
- Participate in architectural design reviews, troubleshooting, pair programming and supporting related teams.
- Utilise internal IaaS, PaaS, & SaaS tooling and contribute improvements.
- Work in a Scrum team with internal customers and stakeholders distributed globally.
Experiences & Skills - Essential
- Strong experience with CI/CD pipelines and associated tooling such as Jenkins.
- Strong experience using critical thinking to solve a range of technical challenges.
- Experience across the full SDLC.
- Experience with scripting languages such as Python, Groovy and Bash and an appreciation of Object-oriented programming (OOP).
- Experience with Git version control, branching strategies and dependency management (e.g. Maven).
- Experience in a cloud-based environment (e.g. AWS, Azure, Google Cloud).
- Experience with containerization tools and orchestration (e.g., Docker, Kubernetes).
Experiences & Skills - Desirable
- Experience with Java (Spring Boot) applications.
- Experience & hands on knowledge of Unix/Linux.
- Experience with automated test infrastructure.
- Experience of Infrastructure as Code (IaC) automation tools such as Terraform, CloudFormation.
- Experience with configuration management tools such as Ansible, Chef, Puppet.
- Experience with static code analysis & security scanning pipelines and associated tooling.
- Experience designing and implementing centralised monitoring solutions including logging, monitoring, alerting.
- Experience with building zero downtime solutions, including blue/green deployments.
**Corporate Security Responsibility**
All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:
+ Abide by Mastercard's security policies and practices;
+ Ensure the confidentiality and integrity of the information being accessed;
+ Report any suspected information security violation or breach, and
+ Complete all periodic mandatory security trainings in accordance with Mastercard's guidelines.

DevOps Engineer - Wearables

A new role has become available for a DevOps Engineer at a company which is developing cutting edge wearable payments technology. With this payment solution being used by financial institutions, wearable manufacturers as well as events and stadium owners, the possible applications of this secure payment technology are endless.

As a DevOps Engineer you will be in charge of designing and maintaining both cloud and physical infrastructure. For the cloud side, they use AWS and as part of the physical infrastructure, you will need to go to their datacentre from time to time. This role is ideal for a junior-mid level engineer, hoping to exapnd their skills and knowledge.

This is a highly varied role where you will get the opporunity to own and drive forward DevOps projects in this company. Some you the AWS services you will get to use include:EC2, DynamoDB, Elastic Beanstalk, Route 53, Lambda, Cloudfront, AWS Firewall Manager, Terraform, Certificate Manager, Cloudwatch, CloudTrail and SNS/SQS.

Requirements:
- AWS experience
- Cisco and Juniper switches / firewalls
- Linux based servers or similar

Apply: Kristian AT enterpriserecruitment DOT com
Position:DevOps Engineer - Wearables
Salary: Up to 60K

AWS/Python/DevOps
Understands landing zones
Cloud formation
CDK cloud infra as code
AWS
Build AWS infra landing zone
Build an area for innovation
Build from a devops perspective
LamBda functions
Python

Please click here to find out more about our Key Information Documents. Please note that the documents provided contain generic information. If we are successful in finding you an assignment, you will receive a Key Information Document which will be specific to the vendor set-up you have chosen and your placement.

To find out more about Computer Futures please visit (url removed)

Computer Futures, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC(phone number removed) England and Wales

Excellent opportunity for AWS DevOps Engineers to be part of our Cloud Infrastructure & Security services practice. Cognizant Infrastructure Services - Provides IT infrastructure & Cloud services for clients across industry verticals, including both Consulting/Professional and Managed Services, across Enterprise Computing, Cloud services, Security Services, DevOps, Data Centres, End User Computing, Service Desk, Network Services and Environment Management Services.
_The role requires SC cleared or SC eligible candidates_
**Responsibilities:**
+ Undertake engagements related to cloud and DevOps Design/Deployment with a specific focus on AWS(Amazon Web Services).
+ Work with AWS Services such as Route53, S3, EC2, ECS, ECR, VPC, IAM, Lambda, DynamoDB, Cloudfront
+ Execute Cloud and DevOps migration and BAU projects
+ Design and deployment of AWS Cloud environments
+ Implementation/Deployment of AWS within in large regulated enterprise environment
+ Work closely with delivery team to provide input on industry trends to tailor our delivery offerings to meet the market needs.
+ Understand the technical requirements of enterprise customers and work closely with the internal development teams to guide the direction of our solution for our enterprise customer eco-system
+ Working with infrastructure automation and Devops tools such as Jenkins, GIT , Chef, Github Advance Security (SAST, DAST), Docker, Powershell , Ansible, or Puppet, along with scripting and programming skills.
+ Travel to/work from client sites as required by project
**KeySkills and Experience :**
+ AWS Services ( Route53, S3, EC2, ECS, ECR, VPC, IAM, Lambda, DynamoDB, Cloudfront)
+ Cloud formation or Terraform , Docker (Dockerfile, docker-compose, docker-cli)
+ Jenkins & GIT (Gitflow) - Github Pkgs, Nexus, ECR
+ Scripting (Shell/Python/Groovy)
+ Github Advance Security (SAST, DAST)
+ Troubleshooting Skill & Vulnerability Management
+ Communication & certifications if any
**Nice to have :**
+ Build Tool : Maven, NPM
+ RHEL (Linux System Administration)
+ Monitoring Tools (Cloud watch, Data Dog)
+ AWS Platform (Control Tower, Organization, Security Services)
+ VPC (All Networking including R53) and Apigee and Cloudflare
+ Chef , Ansible and IDM.
At Cognizant you will experience an exciting mix of innovation by design, creativity, collaboration, and efficiency within a framework of stimulating objectives and a passion for delivering the best to our customers.
You will be joining a network of some of the most creative, innovative, and dedicated people in the industry with ample opportunities to learn and develop your career.
Our Associates are chosen for their attitude, skills, knowledge, and enthusiasm but above all, their belief that anything is possible.
Cognizant is an equal opportunities employer, and we welcome all applications regardless of race, colour, gender, ethnic origin, nationality, religion or beliefs, disability, age, sexual orientation, political opinions, or trade union membership.
Cognizant is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.

At U.S. Bank, we're on a journey to do our best. Helping the customers and businesses we serve to make better and smarter financial decisions, enabling the communities we support to grow and succeed in the right ways, all more confidently and more often-that's what we call the courage to thrive. We believe it takes all of us to bring our shared ambition to life, and each person is unique in their potential. A career with U.S. Bank gives you a wide, ever-growing range of opportunities to discover what makes you thrive. Try new things, learn new skills and discover what you excel at-all from Day One.
As a wholly owned subsidiary of U.S. Bank, Elavon is committed to building the platforms and ecosystems that help over 1.5 million customers around the world to achieve their financial goals-no matter what they need. From transaction processing to customer service, to driving innovation and launching new products, we're building a range of tailored payment solutions powered by the latest technology. As part of our team, you can explore what motivates and energizes your career goals: partnering with our customers, our communities, and each other.
**Job Description**
**Lead DevOps Engineer**
We are looking for a Lead DevOps Engineer with a passion for improving
developer experience and productivity. In this role, you will lead initiatives to build and maintain scalable, secure, and developer-friendly infrastructure and tooling.
You'll work closely with engineering teams to streamline CI/CD pipelines, enhance observability, and create self service platforms that empower developers to ship code faster and more reliably.
**Key Responsibilities:**
+ Lead the design and implementation of internal developer platforms and tools that
+ improve the software development lifecycle.
+ Build and maintain CI/CD pipelines using Jenkins and GitLab, ensuring fast, reliable,
+ and secure deployments.
+ Manage Kubernetes-based environments, including Helm chart development and
+ deployment automation.
+ Design and operate ingress and service mesh solutions using Traefik and Istio to support scalable microservices.
+ Collaborate with developers to improve local development environments, testing workflows, and deployment feedback loops.
+ Drive observability initiatives using Grafana, ELK Stack, and New Relic to provide actionable insights to developers.
+ Manage cloud infrastructure on AWS, focusing on automa7on, scalability, and cost optimization.
+ Maintain and optimize artifact repositories like Nexus, Artifactory or similar.
+ Champion Dev Ex best practices and mentor engineers on DevOps principles and tooling.
+ Foster a culture of continuous improvement, automation, and developer empowerment.
**Required Skills & Experience:**
+ 10+ years of experience in DevOps, Platform Engineering, or Developer Productivity roles.
+ Strong experience with Java development environments, including build tools like
+ Maven or Gradle.
+ Strong experience with Kubernetes, Helm, Jenkins, GitLab, Traefik, and Is
+ Deep understanding of AWS infrastructure and services. Proven experience improving developer workflows and reducing friction in the SDLC.
+ Proficiency in scripting and automa7on (e.g., Python, Bash).
+ Experience with monitoring and logging tools: Grafana, ELK, New Relic.
+ Familiarity with Infrastructure as Code (e.g., Terraform, CloudFormation, CrossPlane).
+ Excellent communication and collaboration skills, with a developer-first mindset.
**Preferred Qualifications:**
+ Experience building internal developer portals or platform-as-a-product initiatives
+ AWS certifications or equivalent cloud expertise.
+ Familiarity with GitOps practices and tools (e.g., ArgoCD).
+ Experience in high-scale, microservices-based environments.
**Location**
The role offers a hybrid / flexible schedule, which means there's an in-office expectation of 3 or more days per week and the flexibility to work outside the office location for the other days.
_This position is not eligible for visa sponsorship._
If there's anything we can do to accommodate a disability during any portion of the application or hiring process, please refer to our disability accommodations for applicants ( .
**Benefits** :
We offer an exciting, fast-paced and diverse working environment with employees of many different nationalities. We provide benefits to help you protect your health and financial security; and give you peace of mind. We also invest in your career growth with development resources that give you the opportunity to stretch and shine.
**Posting may be closed earlier due to high volume of applicants.**

At U.S. Bank, we're on a journey to do our best. Helping the customers and businesses we serve to make better and smarter financial decisions, enabling the communities we support to grow and succeed in the right ways, all more confidently and more often-that's what we call the courage to thrive. We believe it takes all of us to bring our shared ambition to life, and each person is unique in their potential. A career with U.S. Bank gives you a wide, ever-growing range of opportunities to discover what makes you thrive. Try new things, learn new skills and discover what you excel at-all from Day One.
As a wholly owned subsidiary of U.S. Bank, Elavon is committed to building the platforms and ecosystems that help over 1.5 million customers around the world to achieve their financial goals-no matter what they need. From transaction processing to customer service, to driving innovation and launching new products, we're building a range of tailored payment solutions powered by the latest technology. As part of our team, you can explore what motivates and energizes your career goals: partnering with our customers, our communities, and each other.
**Job Description**
The Dev Ops Team is about ensuring all the Opayo Web Applications are delivered through Development, Test and Productions environments in an automated Continuous Delivery manner. Opayo is a high transactional environment and applications are available 24 hours a day, 365 days a year. The team ensures that the Opayo core applications are maintained, monitored and issues are responded to and resolved in line with departmental SLAs.
**Key accountabilities and decision ownership** :
+ Maintaining and supporting Opayo Payments Applications, using monitoring tools to detect failures and investigating/resolving issues and writing custom monitoring scripts
+ Working with the development teams to help design new products and architecting new solutions
+ Monitor Live environment to detect failures and investigate/resolve issues
+ Work closely with the Development & Test Teams to deploy software releases
+ Support production systems as required inside and outside of standard working hours.
+ Reducing the overhead of BAU and manual tasks and replacing them with automated solutions
+ Actively contributing to the process of continual improvement, with regard to self, team and the systems you support
+ Actively participating in departmental projects as per the technology roadmap
+ Working with 3rd parties and partners to ensure product compliance and stability
**Skills, know-how and experience:**
Must have:
+ Extensive experience of AWS
+ Extensive experience of scripting languages
+ Extensive experience of monitoring tools (SumoLogic, New Relic)
+ Extensive experience of automation tools (Puppet, Ansible, Terraform)
+ Extensive experience of working in a DevOps support model
+ Experience of working in a highly available, high transaction, production environment
+ Demonstrable experience communicating in a fast-paced, results-oriented, team-based environment
+ **Preferred:** Proven experience of payment gateways
**Key performance indicators:**
+ System uptime and downtime is in accordance with Operational SLAs
+ Ensure all releases follow defined processes and procedures
+ Participation in **Oncall rota** (additional on-call allowance)
+ Objectives achieved through scripts maintained in source control
+ **Key stakeholders:**
+ Operations, Database, Infrastructure and Network Teams
+ Agile scrum Teams.
+ Security Team.
**Location:**
The role offers a hybrid / flexible schedule, which means there's an in-office expectation of **3** or more days per week and the flexibility to work outside the office location for the other days.
**_This position is not eligible for visa sponsorship._**
If there's anything we can do to accommodate a disability during any portion of the application or hiring process, please refer to our disability accommodations for applicants ( .
**Benefits** :
We offer an exciting, fast-paced and diverse working environment with employees of many different nationalities. We provide benefits to help you protect your health and financial security; and give you peace of mind. We also invest in your career growth with development resources that give you the opportunity to stretch and shine.
**Posting may be closed earlier due to high volume of applicants.**