{"id":2256684,"url":"https://alion.io/job/siriusxm-staff-software-engineer","title":"Staff Software Engineer","company":{"id":19051,"name":"SiriusXM","domain":"siriusxm.com","url":"https://alion.io/company/siriusxm","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"iCIMS","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"staff","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Bucharest, Romania"],"countries":["RO"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":72000,"max_usd":151000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":2050},"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon EKS","optional":false},{"name":"Amazon EventBridge","optional":false},{"name":"Amazon Kinesis","optional":false},{"name":"Amazon S3","optional":false},{"name":"Apache Kafka","optional":false},{"name":"API Gateway","optional":false},{"name":"AWS","optional":false},{"name":"AWS Lambda","optional":false},{"name":"C++","optional":false},{"name":"Docker","optional":false},{"name":"FFmpeg","optional":false},{"name":"Grafana","optional":false},{"name":"Incident Management","optional":false},{"name":"Kubernetes","optional":false},{"name":"MariaDB","optional":false},{"name":"Memcached","optional":false},{"name":"MySQL","optional":false},{"name":"Prometheus","optional":false},{"name":"Python","optional":false},{"name":"Redis","optional":false},{"name":"Rest API","optional":false},{"name":"Rust","optional":false},{"name":"SLI/SLO/SLA","optional":false},{"name":"C","optional":true}],"status":"live","first_seen_at":"2026-10-11T04:04:37Z","employer_posted_date":"2026-10-11","last_verified_at":"2026-10-12T04:09:29Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Responsibilities\nWho We Are:\nSiriusXM 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.\nThis 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.\nSiriusXM 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.\nAdsWizz, 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.\nHow you’ll make an impact:\nAs 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.\nWhat you’ll do:\nProvide 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++\n\nProvide 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\n\nDesign and build high-performance, stable, scalable AdsWizz systems that will be deployed in an enterprise setting.\n\nLead high-level architecture discussions and planning sessions.\n\nWork with various teams of engineers building software in a collaborative development process.\n\nExecute tasks with utmost clarity and precision, demonstrating a strong sense of ownership and providing clear direction to drive projects forward effectively.\n\nServe as a mentor, foster a collaborative environment and encourage and guide team members by being honest and direct.\n\nCollaborate with the Product team to clarify the scope of the projects.\n\nCollaborate with the Global Operations teams to ensure flawless production deployments and support the Incident Management team.\n\nResponsible for tech interviewing on demand\n\nMentor senior engineers and elevate overall engineering practices within the organization\n\nTake ownership of complex production issues, performing deep root cause analysis and implementing systemic improvements.\n\nDefine and enforce performance, scalability, and reliability standards across services.\n\nWhat you'll need:\nBachelor’s Degree in Computer Science, Mathematics, Engineering, or a related field.\n\n7+ 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.\n\nProven experience designing, architecting, and scaling high-performance distributed systems, with a strong focus on low latency, high throughput, and fault tolerance.\n\nDemonstrated ownership of large-scale backend systems or critical infrastructure components, driving architectural direction across teams.\n\nStrong understanding of distributed systems principles, including:\nConsistency models\n\nBackpressure handling\n\nLoad shedding\n\nCircuit breaking\n\nIdempotency\n\nObservability-driven design\n\nFailure recovery strategies\n\nExtensive experience identifying, profiling, and resolving performance bottlenecks at system level (CPU, memory, I/O, network), using industry-standard tooling (perf, flamegraphs, valgrind, etc.).\n\nStrong expertise in designing and scaling audio/video streaming and/or transcoding services, including high-concurrency streaming workloads and CDN-integrated architectures.\n\nDeep 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.\n\nExperience designing and maintaining secure, versioned public APIs, with strong knowledge of REST principles, API security (OAuth2, token-based systems), and API lifecycle management.\n\nProficiency in constructing and communicating detailed software architecture diagrams and technical documentation for cross-team collaboration.\n\nStrong analytical and problem-solving capabilities, with a systems-level approach to debugging and continuous optimization.\n\nDemonstrated ability to influence technical direction across multiple teams and mentor senior engineers.\n\nProven ability to research, evaluate, and introduce new technologies or architectural patterns when appropriate.\n\n5+ 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.\n\nExperience with advertising-related protocols and real-time bidding systems (OpenRTB, VAST) is a strong plus, particularly in latency-sensitive ad-delivery environments.\n\nDesigning and operating high-concurrency streaming services capable of handling large-scale client connections.\n\nArchitecting and scaling transcoding pipelines and media processing workflows.\n\nDesigning resilient cloud-native microservices with strong emphasis on performance and reliability.\n\nWorking with cloud platforms (AWS preferred), including infrastructure patterns for high availability and multi-AZ deployments.\n\nDesigning and maintaining public-facing APIs with strict SLA requirements.\n\nWorking with relational databases (MariaDB/MySQL preferred) and/or NoSQL systems, with understanding of indexing strategies and query performance tuning.\n\nImplementing and optimizing caching layers (Redis, Memcached) for high-performance workloads.\n\nBuilding event-driven architectures using messaging platforms (Kafka, AWS EventBridge, Kinesis).\n\nDeploying and operating containerized workloads (Docker, Kubernetes), including performance-aware container resource tuning.\n\nDesigning observability frameworks using Prometheus, Grafana, ELK or similar tooling, with strong production diagnostics practices.\n\nApplying security best practices in backend systems (OAuth2, token validation, secure communication).\n\nExperience with Rust, particularly in performance-critical components.\n\nExperience with Go or Python in supporting services or tooling ecosystems.\n\nHands-on experience with streaming servers such as Shoutcast, Icecast, Wowza, or equivalent.\n\nDeep knowledge of media container formats and codecs (MP3, MP4, H264, AAC, MPEG), including performance and compatibility tradeoffs.\n\nExperience with transcoding and packaging tools (ffmpeg, AWS Elemental).\n\nExperience with advanced AWS services (S3, Lambda, API Gateway, EKS, Kinesis, SQS, etc.).\n\nExperience designing automated integration and performance testing strategies for backend systems.\n\nExperience with advertising protocols such as VAST, OpenRTB, and real-time bidding architectures.\n\nOur offer - what’s in it for you:\nCasual & friendly working environment with opportunities to impact the company with your ideas and involvement\n\nTechnology diversity, interesting technical exposure in building the best ad-tech product on the market\n\nCorporate annual bonus system to celebrate personal and company wins\n\nIndividual training budget to use as you like for skill improvement\n\nSports bonus for activities such as gym, biking, and yoga\n\nMeal tickets card for enjoyable lunch breaks\n\nGift cards for special events and holidays\n\nDays off for your birthday and special events to recharge and enjoy your BIG moment\n\nPrivate medical subscription to keep you healthy\n\nPrivate Pension Fund (Pillar III) based on your years of tenure\n\nFree library subscription for the book lover in you\n\nSuitable hardware devices (new laptops / Macs, displays etc.)\n\nParking lots at office location - 60% co-funded by the company\n\nCompany offsites, CSR activities, and getaways to stay connected and keep the flame alive\n\nOur 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.\nThe requirements and duties described above may be modified or waived by the Company in its sole discretion without notice.","description_format":"text","description_chars":10249,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Music Industry"],"lifecycle":[{"event":"open","at":"2026-10-11T04:04:37Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":1,"expected_fill_days":48,"reasons":["conf:0","win:early"],"computed_at":"2026-10-12T05:06:03Z"},"pay":null,"html_url":"https://alion.io/job/siriusxm-staff-software-engineer","json_url":"https://alion.io/job/siriusxm-staff-software-engineer.json","meta":{"generated_at":"2026-10-12T05:06:03Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":8116,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-13T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":19051},"rest":"https://alion.io/mcp/rest/get_company?id=19051"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsiriusxm-staff-software-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fsiriusxm-staff-software-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fsiriusxm-staff-software-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/siriusxm-staff-software-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsiriusxm-staff-software-engineer"}]}