Staff Software Engineer
About the job
- A bachelor's degree in Computer Science, Mathematics, Engineering, or a related field is required.
- At least 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, focusing 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, and failure recovery strategies.
- Extensive experience identifying, profiling, and resolving system-level performance bottlenecks involving CPU, memory, I/O, and network, using tools such as perf, flamegraphs, and valgrind.
- Strong expertise 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, including HLS, HTTP-based streaming, RTMP/RTSP, and ICY, as well as 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 including OAuth2 and token-based systems, and API lifecycle management.
- Proficiency constructing and communicating detailed software architecture diagrams and technical documentation for cross-team collaboration.
- At least 5 years of experience designing and operating streaming and/or high-throughput backend systems in cloud environments, preferably AWS, with hands-on experience in cloud-native design principles.
- Experience designing and operating high-concurrency streaming services capable of handling large-scale client connections.
- Experience architecting and scaling transcoding pipelines and media processing workflows.
- Experience designing resilient cloud-native microservices emphasizing performance and reliability.
- Experience working with cloud platforms, preferably AWS, including high-availability and multi-AZ infrastructure patterns.
- Experience designing and maintaining public-facing APIs with strict SLA requirements.
- Experience with relational databases, preferably MariaDB/MySQL, and/or NoSQL systems, including indexing strategies and query performance tuning.
- Experience implementing and optimizing caching layers such as Redis and Memcached for high-performance workloads.
- Experience building event-driven architectures using messaging platforms such as Kafka, AWS EventBridge, and Kinesis.
- Experience deploying and operating containerized workloads with Docker and Kubernetes, including performance-aware container resource tuning.
- Experience designing observability frameworks using Prometheus, Grafana, ELK, or similar tools, with strong production diagnostics practices.
- Experience applying security best practices in backend systems, including OAuth2, token validation, and secure communication.
- Hands-on experience with streaming servers such as Shoutcast, Icecast, Wowza, or equivalent.
- Deep knowledge of media container formats and codecs, including MP3, MP4, H264, AAC, and MPEG, and their performance and compatibility tradeoffs.
- Experience with transcoding and packaging tools such as ffmpeg and AWS Elemental.
- Experience with advanced AWS services such as S3, Lambda, API Gateway, EKS, Kinesis, and SQS.
- Experience designing automated integration and performance testing strategies for backend systems.
- Provide technical leadership for requirements, analysis, design, and implementation of AIS, a widely used audio streaming server written in C/C++.
- Provide technical leadership for requirements, analysis, design, and implementation of the AIS Managed Service Platform, built on AWS technologies and Go.
- Design and build high-performance, stable, scalable AdsWizz systems for enterprise deployment.
- Lead high-level architecture discussions and planning sessions.
- Work with engineering teams building software through a collaborative development process.
- Execute tasks clearly and precisely, take ownership, and provide direction to move projects forward.
- Mentor team members and foster a collaborative environment through honest and direct guidance.
- Collaborate with the Product team to clarify project scope.
- Collaborate with Global Operations to ensure production deployments and support the Incident Management team.
- Conduct technical interviews as needed.
- Mentor senior engineers and elevate engineering practices across the organization.
- Take ownership of complex production issues, perform root cause analysis, and implement systemic improvements.
- Define and enforce performance, scalability, and reliability standards across services.
- Experience with advertising-related protocols and real-time bidding systems such as OpenRTB and VAST, particularly in latency-sensitive ad-delivery environments.
- Experience with Rust, particularly in performance-critical components.
- Experience with Go or Python in supporting services or tooling ecosystems.
- Experience with advertising protocols such as VAST and OpenRTB, and real-time bidding architectures.
About the company
SiriusXM provides satellite radio and online streaming of music, sports, news, and talk content to North American listeners on a subscription basis, with occasional advertising on some channels. It delivers live broadcasts and on-demand shows through satellite and internet streams, plus exclusive programming and artist- or event-specific channels; in cars, it partners with manufacturers to embed the service in infotainment systems. It differentiates itself through exclusive content and partnerships, such as being the audio broadcaster for the Masters Tournament and offering artist-specific channels like Bob Marley and Jimi Hendrix. Its goal is to grow its subscriber base and advertising revenue by offering a wide range of premium audio entertainment and easy access across platforms.
Company Size
5,001-10,000
Company Stage
IPO
Headquarters
New York City, New York
Founded
2008
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Simplify's Take
What believers are saying
- SXM-11 entered service September 2026, extending the fleet refresh through SXM-12.
- Jennifer Witz targets $1.5 billion free cash flow next year with $100 million savings.
- YouTube, Apple, Amazon, and SoundCloud partnerships expand advertising reach across 255 million listeners.
What critics are saying
- Revenue growth stayed flat in 2026 while five-year returns trailed the market badly.
- Streaming rivals and cheap ad-supported plans compress pricing before 2027 fleet capex relief.
- If automakers drop default placement, SiriusXM loses distribution leverage and subscriber acquisition efficiency.
What makes Sirius XM Radio unique
- September 2026 SXM-11 strengthened SiriusXM's North American satellite coverage and 360L reliability.
- Sean Gibbons now leads product, technology, automotive, streaming, and ad tech integration.
- Exclusive live sports, curated channels, and in-car distribution remain SiriusXM's durable moat.
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Benefits
Medical
Dental
Vision
Short and Long Term Disability
Life Insurance
Flex Spending Account
Veterinary Pet Insurance
Employee Assistance Plan
401K with employer match
Paid Time Off
Paid Parental Leave
Pre-Tax Commuter Benefits
Identity Theft Protection Benefit
Free SiriusXM, Pandora and Stitcher listening accounts
Growth & Insights and Company News
6 month growth
0%1 year growth
0%2 year growth
0%The truth behind Megyn Kelly's 'morally appalling' MAGA pivot. SiriusXM host Megyn Kelly speaks at the 2023 Turning Point Action conference in West Palm Beach, Florida (Image: Gage Skidmore / Creative Commons) October 10, 2026 | 12:30PM ET Megyn Kelly's pivot to MAGA boosterism has reentered the public eye in a major way, and according to a new breakdown from The Atlantic, there may be a particular moment in her career that exposes the truth behind her "drastic" and "morally appalling" shift. Once considered a more non-conformist and feminist presence during her time as a star anchor at Fox News, and a critical voice against President Donald Trump to boot, Kelly has in recent years pivoted hard towards being an overt and often foul-mouthed MAGA mouthpiece on her daily SiriusXM and YouTube show. Her shift has once again turned heads online after a "disconcerting" reaction to the "Cornell 7" college sexual assault scandal, in which she attacked the victim as "not the most attractive gal" and suggested that she was "probably thrilled to be so admired." In a new piece for The Atlantic on Saturday, staff writer Sophie Gilbert dug into why Kelly's shift towards this sort of rhetoric feels so much more drastic than other similar right-wing media "heel turns" in recent years. "We've seen some drastic heel turns in the media over the past few decades, but none quite as morally appalling as a former self-described advocate for female empowerment suggesting that a woman in this situation might have craved the attention because no one would have wanted to have sex with her otherwise," Gilbert wrote. "Normally, I have a pretty strong constitution for this kind of bad-faith rage bait. But Kelly's display this week of what I can describe only as performative hysteria has been hard to watch. Less than a minute into her show on Monday, she invoked the Salem witch trials. Twenty-three minutes in came her first pronounced use of the word f - (I counted seven in total). That the whole performance was interspersed with ad reads for supplements and a tiny avatar of Kelly pointing giddily at the 'Subscribe' button just added to the cognitive dissonance. It felt like watching morning television in Gilead." Gilbert further noted that she has found it difficult to discern how much of Kelly's reaction to the Cornell 7 case, and other similar outbursts she has had, is genuine, or is just a show to try and get attention online. She argued further that Kelly's "apparent worldview - where she herself can face sexual harassment due to patriarchal power structures that protect and even reward abusive men, but other women are likely lying - has been shaped by her rise and fall on TV news." Kelly left Fox News shortly after Trump's first term began, after she confirmed in reports that she had been sexually harassed by former CEO Roger Ailes. She moved to a much-anticipated new role at NBC News, but flamed out quickly and was fired after a series of controversial moves, leading to the position she currently finds herself in. "This moment seems to have influenced Kelly's current persona," Gilbert explained. "Public humiliation is hard for anyone to endure, but for someone with a renegade streak ('I've never been a 'pc' kind of person,' she reportedly wrote in her apology email to NBC staffers after her blackface comments), seeing so many people celebrating her failure must have been immensely painful. By the time The Megyn Kelly Show launched as a podcast in September 2020, mid-pandemic, Kelly was snidely describing her guests as lefties, complaining about the assault allegations against the Supreme Court justice Brett Kavanaugh, and raging at the 'dishonesty' of the press covering Trump."
SiriusXM slides new satellite into operational service. Intuitive Machines has handed the satellite over to SiriusXM, and it has entered operational service. [email protected] September 22, 2026 Radio broadcaster SiriusXM has placed its latest satellite into operational orbit, several months after the hardware was launched into space aboard a SpaceX Falcon 9 rocket. The new satellite, SXM-11, will allow the company to continue offering satellite-based radio listeners with dozens of channels while also supporting and expanding its interactive features through the SiriusXM 360L platform, the company said in a statement. The satellite will replace XM-5 and is the 15th satellite launched for Sirius, XM and SiriusXM. The company's broader fleet update also includes SXM-12, which is scheduled to launch in 2027. SXM-11 weighed more than 15,000 pounds at launch, stands 28 feet tall and spans more than 106 feet with its solar arrays deployed. The spacecraft carries a 30-foot unfurlable S-band reflector designed to support SiriusXM's satellite audio service across North America. SiriusXM's satellite network supports more than 220 million SiriusXM-equipped vehicles across the continent and remains a core distribution platform for the company's in-car audio service. The network also supports SiriusXM with 360L, which combines satellite coverage with streaming features such as personalization, choice and interactivity. The satellite system allows SiriusXM to deliver service across broad areas, including places where cellular service may be limited. The company said SXM-11 strengthens its next-generation satellite fleet and reinforces the long-term resilience of its network. "Bringing SXM-11 into service strengthens our next-generation satellite fleet and reinforces the long-term resilience of our network," SiriusXM's Chief Product and Technology Officer Sean Gibbons said in a statement. "For listeners, that means a premium in-car experience with broad, reliable coverage, including where cellular service may be limited." Gibbons said SiriusXM with 360L brings together the reach of satellite with the choice and interactivity of streaming "to bring the best of both technologies together in millions of vehicles." Intuitive Machines said the handover continues a long-running spacecraft relationship with SiriusXM. "The handover of SXM-11 represents our 13th spacecraft delivered in partnership with SiriusXM," said Chris Johnson, the President of Intuitive Machines. "Achieving full commercial operation demonstrates the capability of our IM 1300 platform to meet demanding power, thermal and payload requirements for mission-critical commercial satellite infrastructure." SiriusXM and Intuitive Machines are continuing work on SXM-12, the next satellite in the current fleet refresh cycle. Once in service, SXM-12 will further support SiriusXM's satellite audio and data broadcast operations. SiriusXM offers dozens of commercial-free linear music streams along with a handful of news, talk, comedy and sports channels. Its latest plan costs $5 per month and allows radio listeners to access live sports play-by-play from professional and college sports organizations along with shoulder programming from the NFL, NBA, NHL, MLB and other leagues. SiriusXM 360L-equipped tuners can also access hundreds of linear streams and on-demand programs delivered over broadband.
Intuitive Machines has completed the handover of its SXM-11 satellite to SiriusXM following successful in-orbit testing. The geostationary communications satellite became fully operational after launching aboard a SpaceX Falcon 9 rocket on 28 June. The milestone marks the 13th spacecraft built together by Intuitive Machines and SiriusXM over more than two decades of partnership. Work is already underway on the next satellite in the series, according to SiriusXM's Chief Product and Technology Officer Sean Gibbons. The satellite builds on previous models SXM-9 and SXM-10, strengthening SiriusXM's satellite network. Intuitive Machines shares traded 0.22% higher in after-hours trading on Tuesday.
Latest SiriusXM satellite is in service. SXM-11 becomes the most powerful bird in the company's fleet Published: September 15, 2026 Following its launch from Cape Canaveral in June aboard a SpaceX rocket and subsequent orbital testing, SiriusXM's SXM-11 satellite is operational. SXM-11 is the 15th satellite launched for SiriusXM and will replace XM-5, according to the announcement. It is part of an ongoing fleet-refresh program. SXM-9 and SXM-10 commenced service in 2025, and SXM-12 is scheduled for launch in 2027. The company says this is the most powerful satellite in its fleet and will improve signal reception, expand Alaska coverage and support reliable service across North America. The satellite launched aboard a SpaceX Falcon 9 rocket on June 28. SiriusXM and Intuitive Machines subsequently completed the commissioning and testing required to verify that the spacecraft and its communications systems were ready. SiriusXM says the satellite is built on the Intuitive Machines IM 1300 satellite platform. It weighed more than 15,000 pounds at launch, approximately the weight of a school bus. Nearly 60% of the launch weight was from fuel supporting its journey and in-orbit operations, according to the announcement. The satellite is 28 feet tall and spans more than 106 feet with its solar panels deployed. Orbiting about 22,000 miles above Earth, it features a large 30-foot main beam antenna that unfurls. It broadcasts audio and data to users on the ground, with an estimated 8 million square miles of broadcast coverage, according to a press release. Sean Gibbons, chief product and technology officer, was quotes saying the satellite "strengthens our next-generation satellite fleet and reinforces the long-term resilience of our network." SiriusXM says more than 220 million SiriusXM-equipped vehicles in North America are on the road. Gibbons says the satellite has broad, reliable coverage, including where cellular service may be limited. The company says SXM-11 carries an additional communications payload that will be used to expand WCS-band coverage.
Intuitive Machines (LUNR) stock: SXM-11 satellite milestone strengthens SiriusXM partnership. SXM-11 enters service after successful testing, reinforcing Intuitive Machines' long-term role in SiriusXM's satellite network. Tldr. Table of Contents * Intuitive Machines completes SXM-11 handover after successful in-orbit testing. * SXM-11 strengthens SiriusXM's satellite network and long-term service reach. * The handover extends a partnership that has produced 13 spacecraft together. * Recent acquisitions expand Intuitive Machines' Build-Connect-Operate strategy. * LUNR rises as SXM-11 adds another completed commercial satellite milestone. Intuitive Machines (LUNR) stock gained after the company completed the SXM-11 satellite handover to SiriusXM. LUNR traded at $14.11, up 1.69%, after rebounding from late-morning lows toward intraday highs. The milestone strengthens a long-running satellite partnership and expands the company's role in commercial space infrastructure. Intuitive Machines completes SXM-11 satellite handover. Intuitive Machines completed the SXM-11 handover after finishing successful in-orbit testing. The satellite now supports SiriusXM's communications network as a fully operational geostationary platform. SpaceX launched SXM-11 aboard a Falcon 9 rocket on June 28, 2026. The satellite extends SiriusXM's next-generation space network and follows the earlier SXM-9 and SXM-10 spacecraft. SiriusXM uses these high-powered satellites to strengthen service reach, reliability, and network resilience. The new spacecraft also supports the company's premium in-car satellite radio services across its customer base. Intuitive Machines and SiriusXM have worked together on satellite development for more than two decades. The companies have built 13 spacecraft through their long-running commercial relationship. The partners have also started work on the next satellite, extending the program beyond SXM-11. SXM-11 milestone strengthens SiriusXM partnership. The SXM-11 handover shows Intuitive Machines can deliver complex commercial spacecraft through full mission completion. The company handled design, manufacturing, testing, and final delivery requirements for the satellite program. This performance strengthens its position as a supplier of high-power satellite platforms for commercial operators. SiriusXM continues to rely on the partnership as it modernizes its satellite network. The network supports broad coverage for audio services and connected in-car experiences. SXM-11 adds another operational asset that improves capacity and supports long-term service stability. The project also adds another completed mission to Intuitive Machines' growing space systems portfolio. The company serves commercial, civil, and national security customers across several mission areas. Its spacecraft work now reaches Earth orbit, cislunar operations, and broader deep-space infrastructure programs. LUNR expands broader space infrastructure strategy. Intuitive Machines has expanded its business through several recent acquisitions across the space sector. The company acquired KinetX, Lanteris Space Systems, Goonhilly Earth Station, and COMSAT. These deals add navigation, spacecraft, ground-station, and communications capabilities to its operating structure. Management has organized these assets under a Build-Connect-Operate strategy for integrated space infrastructure. The model combines spacecraft production with communications networks and ongoing mission operations. That structure allows Intuitive Machines to compete for larger projects requiring several technical capabilities under one provider. The SXM-11 delivery fits directly into this broader strategy and demonstrates existing execution in commercial satellite programs. Intuitive Machines continues building infrastructure for communications, exploration, security, and commerce beyond Earth. Its expanding capabilities support the company's effort to operate as a full-service space infrastructure prime. Limited Time Offer Get 3 free stock ebooks. Discover top-performing stocks in AI, Crypto, and Technology with expert analysis. * Top 10 AI Stocks - Leading AI companies * Top 10 Crypto Stocks - Blockchain leaders * Top 10 Tech Stocks - Tech giants