Backend Engineer (eKYC)

Who We Are
SiriusXM and its brands (Pandora, SiriusXM Media, AdsWizz, Simplecast, and SiriusXM Connect) are leading a new era of audio entertainment and services by delivering the most compelling subscription and ad-supported audio entertainment experience for listeners – in the car, at home, and anywhere on the go with connected devices. Our vision is to shape the future of audio, where everyone can be effortlessly connected to the voices, stories and music they love wherever they are.

This is where a diverse group of emerging talent and legends share authentic and purposeful songs, stories, sounds and insights through some of the best programming and technology in the world. Our critically acclaimed, industry-leading audio entertainment encompasses music, sports, comedy, news, talk, live events, and podcasting. Regardless of their role, each of our employees is vital in bringing SiriusXM’s vision to life daily.

SiriusXM Media
is the gateway for marketers to North America's most prominent digital audio advertising ecosystem. As the combined advertising revenue organization of SiriusXM Holdings Inc., SiriusXM Media spans across leading owned and operated audio platforms Pandora and SiriusXM; innovative ad tech solutions powered by AdsWizz; sonic creative consultancy Studio Resonate; and an extended content network featuring exclusive monetization agreements with Audiochuck, NBC Universal, SoundCloud, and many more. Reaching more than 150 million listeners each month, SiriusXM Media delivers audiences the tailored brand experiences they crave while putting creators first, making it easy for every marketer to produce, plan, buy and measure across its entire audio universe.

AdsWizz
, a subsidiary of SiriusXM, is the leading global provider of digital audio and podcast advertising solutions. AdsWizz is the underlying monetization solution for well-known music platforms, podcasts, and broadcasting groups worldwide, giving advertisers of all sizes unprecedented access to premium and niche audio content. Through dynamic ad insertion, advanced programmatic platforms, and innovative audio formats, AdsWizz efficiently connects buyers and sellers for digital audio and podcast advertising. AdsWizz is a global company with a presence in over 40 countries and a
Technology Development Hub in Bucharest, Romania.
How You’ll Make An Impact
As a
Staff Software Engineer
, you will join a highly performing-team of engineers who build, own, and maintain backend services and products. You will design, collaborate, and execute building the AdsWizz products at scale while automating and providing insights into the data onboarding with the SXM Media and AdsWizz services.

What You’ll Do

• Provide technical leadership for the requirements, analysis and design and implementation of the most used Audio Streaming Server in the world - AIS, written in C/C++
• Provide technical leadership for the requirements, analysis, design and implementation of the AIS Managed Service Platform, built on top of AWS technologies and Go programming language
• Design and build high-performance, stable, scalable AdsWizz systems that will be deployed in an enterprise setting.
• Lead high-level architecture discussions and planning sessions.
• Work with various teams of engineers building software in a collaborative development process.
• Execute tasks with utmost clarity and precision, demonstrating a strong sense of ownership and providing clear direction to drive projects forward effectively.
• Serve as a mentor, foster a collaborative environment and encourage and guide team members by being honest and direct.
• Collaborate with the Product team to clarify the scope of the projects.
• Collaborate with the Global Operations teams to ensure flawless production deployments and support the Incident Management team.
• Responsible for tech interviewing on demand
• Mentor senior engineers and elevate overall engineering practices within the organization
• Take ownership of complex production issues, performing deep root cause analysis and implementing systemic improvements.
• Define and enforce performance, scalability, and reliability standards across services.

What You'll Need

• Bachelor’s Degree in Computer Science, Mathematics, Engineering, or a related field.
• 7+ years of professional software engineering experience, with deep expertise in modern C++ (C++14/17/20), including advanced memory management, multithreading, concurrency models, and performance optimization.
• Proven experience designing, architecting, and scaling high-performance distributed systems, with a strong focus on low latency, high throughput, and fault tolerance.
• Demonstrated ownership of large-scale backend systems or critical infrastructure components, driving architectural direction across teams.
• Strong understanding of distributed systems principles, including:

• Consistency models
• Backpressure handling
• Load shedding
• Circuit breaking
• Idempotency
• Observability-driven design
• Failure recovery strategies

• Extensive experience identifying, profiling, and resolving performance bottlenecks at system level (CPU, memory, I/O, network), using industry-standard tooling (perf, flamegraphs, valgrind, etc.).
• Strong expertise in designing and scaling audio/video streaming and/or transcoding services, including high-concurrency streaming workloads and CDN-integrated architectures.
• Deep understanding of streaming protocols and delivery architectures (HLS, HTTP-based streaming, RTMP/RTSP, ICY), including segment lifecycle, bitrate ladders, and server-side ad insertion considerations.
• Experience designing and maintaining secure, versioned public APIs, with strong knowledge of REST principles, API security (OAuth2, token-based systems), and API lifecycle management.
• Proficiency in constructing and communicating detailed software architecture diagrams and technical documentation for cross-team collaboration.
• Strong analytical and problem-solving capabilities, with a systems-level approach to debugging and continuous optimization.
• Demonstrated ability to influence technical direction across multiple teams and mentor senior engineers.
• Proven ability to research, evaluate, and introduce new technologies or architectural patterns when appropriate.
• 5+ years of experience designing and operating streaming and/or high-throughput backend systems in cloud environments (AWS preferred), with hands-on experience in cloud-native design principles.
• Experience with advertising-related protocols and real-time bidding systems (OpenRTB, VAST) is a strong plus, particularly in latency-sensitive ad-delivery environments.
• Designing and operating high-concurrency streaming services capable of handling large-scale client connections.
• Architecting and scaling transcoding pipelines and media processing workflows.
• Designing resilient cloud-native microservices with strong emphasis on performance and reliability.
• Working with cloud platforms (AWS preferred), including infrastructure patterns for high availability and multi-AZ deployments.
• Designing and maintaining public-facing APIs with strict SLA requirements.
• Working with relational databases (MariaDB/MySQL preferred) and/or NoSQL systems, with understanding of indexing strategies and query performance tuning.
• Implementing and optimizing caching layers (Redis, Memcached) for high-performance workloads.
• Building event-driven architectures using messaging platforms (Kafka, AWS EventBridge, Kinesis).
• Deploying and operating containerized workloads (Docker, Kubernetes), including performance-aware container resource tuning.
• Designing observability frameworks using Prometheus, Grafana, ELK or similar tooling, with strong production diagnostics practices.
• Applying security best practices in backend systems (OAuth2, token validation, secure communication).
• Experience with Rust, particularly in performance-critical components.
• Experience with Go or Python in supporting services or tooling ecosystems.
• Hands-on experience with streaming servers such as Shoutcast, Icecast, Wowza, or equivalent.
• Deep knowledge of media container formats and codecs (MP3, MP4, H264, AAC, MPEG), including performance and compatibility tradeoffs.
• Experience with transcoding and packaging tools (ffmpeg, AWS Elemental).
• Experience with advanced AWS services (S3, Lambda, API Gateway, EKS, Kinesis, SQS, etc.).
• Experience designing automated integration and performance testing strategies for backend systems.
• Experience with advertising protocols such as VAST, OpenRTB, and real-time bidding architectures.

Our Offer – What’s In It For You

• Casual & friendly working environment with opportunities to impact the company with your ideas and involvement
• Technology diversity, interesting technical exposure in building the best ad-tech product on the market
• Corporate annual bonus system to celebrate personal and company wins
• Individual training budget to use as you like for skill improvement
• Sports bonus for activities such as gym, biking, and yoga
• Meal tickets card for enjoyable lunch breaks
• Gift cards for special events and holidays
• Days off for your birthday and special events to recharge and enjoy your BIG moment
• Private medical subscription to keep you healthy
• Private Pension Fund (Pillar III) based on your years of tenure
• Free library subscription for the book lover in you
• Suitable hardware devices (new laptops / Macs, displays etc.)
• Parking lots at office location – 60% co-funded by the company
• Company offsites, CSR activities, and getaways to stay connected and keep the flame alive

Our goal at SiriusXM is to provide and maintain a work environment that fosters mutual respect, professionalism, and cooperation. SiriusXM is an equal opportunity employer that does not discriminate based on actual or perceived race, creed, color, religion, national origin, ancestry, alienage or citizenship status, age, disability or handicap, sex, gender identity, marital status, familial status, veteran status, sexual orientation or any other characteristic protected by applicable federal, state or local laws.

The requirements and duties described above may be modified or waived by the Company in its sole discretion without notice.

R-2026-03-28

Who We Are
Worldline helps businesses of all shapes and sizes to accelerate their growth journey - quickly, simply, and securely. We are the innovators at the heart of the payments technology industry, shaping how the world pays and gets paid. Our technology powers the growth of millions of businesses across 5 continents. And just as we help our customers accelerate their business, we are committed to helping our people accelerate their careers. Together, we shape the evolution.

The opportunity
The role is offered within the Digital Services unit, and more specifically in the Digital Payment & Security Business entity, which designs, develops, and hosts payment and multi-channel authentication applications for large French and international accounts.

The "Trusted Authentication" project aims to develop strong authentication solutions to ensure the security of digital transactions. In a world where data security is paramount, this project is part of an approach focused on innovation and user protection.

In this context we propose a lead developer position embedded in a brand-new support team to participate from design to delivery of various patch fixes, supported by your squad lead as well as a whole project team that is yet to be built.

Day-to-day Responsibilities

• Manage and maintain Linux/RedHat systems in Worldline's production environment, ensuring high availability and performance in accordance with SLAs
• Monitor, troubleshoot, and resolve system-related issues while maintaining service level agreements (SLAs) and platform availability targets
• Perform regular system updates and patch management ensuring systems are current with latest security updates
• Participate in disaster recovery planning and testing, ensuring business continuity and system resilience
• Configure and optimize system automation tools and scripts to improve operational efficiency
• Collaborate with security teams to maintain compliance with PCI DSS and other relevant security standards in the Linux environment In a Cloud context, the System Engineer role is adapted and called now SysOPS. This role is present in the entire lifecycle of any service hosted in the cloud. He is mainly responsible for deploying, managing and operating systems on the Cloud platforms.

Who Are We Looking For

• Technical expert with proven experience in systems administration, preferably in a financial services or payment processing environment
• Strong knowledge of redhat, centos systems and cloud principles and best practices.
• Experience with business continuity planning and disaster recovery procedures
• Excellent problem-solving skills with a proactive approach to system monitoring and optimization
• Experience in system administration or Linux systems or a similar role;

Perks & Benefits
In addition to joining a global leader in payments, you can also expect an excellent range of benefits. These include a rewarding salary, leave days, an attractive pension scheme, global learning days and many more. We also have location specific benefits, varying from private medical insurance, to extended parental leave and a flexible benefits scheme, allowing you to purchase discounted products and services.

If You Join Us, You Will Enjoy

• Hybrid Working Policy
• Gift vouchers on the occasion of Christmas/Easter Holidays
• Free private medical services
• 21 vacation days/year
• Referral bonuses for new hires recommended by you
• WFH & Flexible Working Hours
• Full access to the “Learning” platform

What’s more, we really value Innovation, Cooperation, Excellence and Empowerment. These values are reflected on our daily work. This is the core of our organization. At Worldline our top priority is to engage, encourage and develop you to help you improve your potential. In fact, we have comprehensive training and development programs in place demonstrating our dedication to developing your career.

Our success comes from strong skills, new insights, diverse points of view and the energy of all employees at Worldline. Not only do they represent the Heart and Face of our company, they are also key players in our success. We make leading our talents a major asset in the success of our business.

Worldline is proud to be an Equal Opportunity employer. We do not discriminate based upon race, religion, colour, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as an individual with a disability, or other applicable legally protected characteristics.

Shape the evolution.
We are on an exciting journey towards the next frontiers of payments technology, and we look for big thinkers, people with passion, can-do attitude and a hunger to learn and grow. Here you’ll work with ambitious colleagues from around the world, take on unique challenges as a team, and make a real impact on the society. With an empowering culture, strong technology and extensive training opportunities, we help you accelerate your career - wherever you decide to go. Join our global team of 18,000 innovators and shape a tomorrow that is yours to own.

Learn more about life at Worldline at
jobs.worldline.com
We are proud to be an Equal Opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as an individual with a disability, or any applicable legally protected characteristics.
Shape the evolution
We are on an exciting journey towards the next frontiers of payments technology, and we look for big thinkers, people with passion, can-do attitude and a hunger to learn and grow. Here you'll work with ambitious colleagues from around the world, take on unique challenges as a team, and make a real impact on the society. With an empowering culture, strong technology and extensive training opportunities, we help you accelerate your career - wherever you decide to go. Join our global team of 18,000 innovators and shape a tomorrow that is yours to own.

Learn more about life at Worldline at jobs.worldline.com

We are proud to be an Equal Opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex, sexual orientation, gender identity, gender expression, age, status as an individual with a disability, or any applicable legally protected characteristics.

Job Description
Today, the corporate landscape is dynamic and the world ahead is full of possibilities! None of the amazing things we do at Infosys would be possible without an equally amazing culture, the environment where ideas can flourish and where you are empowered to move forward as far as your ideas will take you.

At Infosys, we assure that your career will never stand still, we will inspire you to build what’s next and we will navigate further together. Our journey of learnability, values and trusted relationships with our clients continue to be the cornerstones of our organization and these values are upheld only because of our people.

Your role
In the role of Technology Lead, you will interface with key stakeholders and apply your technical proficiency across different stages of the Software Development Life Cycle including Requirements Elicitation, Application Architecture definition and Design. You will play an important role in creating the high level design artifacts. You will also deliver high quality code deliverables for a module, lead validation for all types of testing and support activities related to implementation, transition and warranty. You will be part of a learning culture, where teamwork and collaboration are encouraged, excellence is rewarded, and diversity is respected and valued.

Required

• 5+ years of professional Python experience, with strong command of modern Python (3.9+).
• Extensive experience building RESTful APIs with FastAPI or similar frameworks.
• Strong understanding of Kubernetes (deployments, services, ingress, Helm charts, config maps).
• Hands-on experience with Redis for caching, pub/sub, or distributed locks.
• Proficiency with Azure DevOps, Azure Pipelines, and cloud environments.
• Strong testing mindset—pytest, mocking, parametrization, regression suites.
• Solid understanding of Docker, container lifecycle, and cloud-native patterns.
• Knowledge of asynchronous programming (async/await), performance tuning, and profiling.
• Experience with observability tools (logging, distributed tracing, metrics).

Preferred 0

• Experience with event-driven architecture, Kafka, RabbitMQ, or Azure Service Bus.
• Extensive experience building RESTful APIs with FastAPI or similar frameworks.
• Background in high-availability systems, horizontal scaling, or distributed systems.
• Experience with IaC (Terraform, Bicep).

Personal
Besides the professional qualifications of the candidates we place great importance in addition to various forms personality profile. These include:

3

• Extensive experience building RESTful APIs with FastAPI or similar frameworks.
• Excellent communication skills, able to explain complex topics clearly.
• Mentorship and technical leadership abilities.
• Collaboration with cross-functional teams (PMs, DevOps, Data Source).

About Infosys
Infosys is a global leader in next-generation digital services and consulting. We enable clients in 59 countries to navigate their digital transformation.

With over four decades of experience in managing the systems and workings of global enterprises, we expertly steer clients, in 59 countries, as they navigate their digital transformation powered by cloud and AI. We enable them with an AI-first core, empower the business with agile digital at scale and drive continuous improvement with always-on learning through the transfer of digital skills, expertise, and ideas from our innovation ecosystem. We are deeply committed to being a well-governed, environmentally sustainable organization where diverse talent thrives in an inclusive workplace.

All aspects of employment at Infosys are based on merit, competence and performance. We are committed to embracing diversity and creating an inclusive environment for all employees. Infosys is proud to be an equal opportunity employer

Remote Europe

Isovalent, now part of Cisco, is the company founded by the creators of Cilium and eBPF. Cisco Isovalent builds open-source software and enterprise solutions solving networking, security, and observability needs for modern cloud native infrastructure. The flagship technology, Cilium, is the choice of numerous, industry-leading, global organizations.

We believe in fostering an inclusive and diverse workplace where every team member feels valued, respected, and empowered. We believe that every employee contributes to our success, and we are committed to fostering an environment where everyone can thrive. We encourage candidates from all backgrounds to apply and join us in our mission to deliver exceptional products and services.

About This Role
Cisco Isovalent is seeking a skilled and experienced Software Engineer to develop its next generation Load Balancer leveraging the technology developed with Cilium. You will be responsible for driving forward a standalone eBPF load balancer, enabling scalable, secure, and resilient traffic management in cloud and hybrid enterprise environments. You will work with a highly collaborative and skilled team to build solutions that advance the next generation of networking and security in Kubernetes environments.

What You’ll Do
Define and evolve the architecture of our enterprise-grade load balancer.

Lead design and development of the load balancer’s data plane, control plane and orchestration tools for scalable traffic management and high availability within Kubernetes.

Guide the team through technical decisions, design reviews, and performance/security optimizations.

Collaborate across engineering, product, and customer teams to align technical direction with business needs.

Contribute to and uphold engineering best practices, code quality, and operational excellence.

Minimum Qualifications

• Bachelors Computer Science degree, or related fields
• 5+ years of experience developing load balancing software, preferably with Go
• Experience with Kubernetes, Cloud Native workloads and/or distributed systems

Preferred Qualifications

• Knowledge about Linux systems design, security and/or networking, Linux kernel
• Desire to write high quality and efficient code
• Experience designing and implementing APIs
• A public track record of open-source code commits is a plus

Why Cisco?

At Cisco, we’re revolutionizing how data and infrastructure connect and protect organizations in the AI era – and beyond. We’ve been innovating fearlessly for 40 years to create solutions that power how humans and technology work together across the physical and digital worlds. These solutions provide customers with unparalleled security, visibility, and insights across the entire digital footprint.

Fueled by the depth and breadth of our technology, we experiment and create meaningful solutions. Add to that our worldwide network of doers and experts, and you’ll see that the opportunities to grow and build are limitless. We work as a team, collaborating with empathy to make really big things happen on a global scale. Because our solutions are everywhere, our impact is everywhere.

We are Cisco, and our power starts with you.