Full-Time

Senior Software Engineer

Firmware

Updated on 9/3/2026

Adtran

Adtran

1,001-5,000 employees

Fiber-optic networking equipment provider

No salary listed

Norcross, GA, USA

Hybrid

Three days in-office per week, Tuesday through Thursday.

Bachelor's

Category
Software Engineering (1)
Required Skills
Bash
Agile
Python
Software Testing
Git
Ruby
Computer Networking
FreeRTOS
Perl
SCRUM
C/C++
DevOps
FPGA
Linux/Unix

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Requirements
  • A bachelor's degree in Electrical Engineering, Computer Engineering, Computer Science, or a related field.
  • At least 10 years of experience in embedded software or firmware development, preferably in telecommunications or networking.
  • Strong proficiency in modern C and C++, including adherence to C++ best practices and coding standards.
  • Experience with real-time operating systems, low-level debugging, and hardware/software integration.
  • Solid understanding of embedded communication protocols including SPI, I²C, and UART, with hands-on experience developing and debugging device drivers.
  • Familiarity with ARM or other microcontroller architectures.
  • Proficiency with Git and collaborative development workflows including branching, reviews, and continuous integration.
  • Skill in reading schematics, using oscilloscopes, and troubleshooting embedded systems.
  • Experience participating in code reviews, testing, and documentation to ensure high-quality deliverables.
  • Ability to work effectively with cross-functional teams, including quality assurance, product management, and manufacturing.
  • Must be authorized to work in the United States.
Responsibilities
  • Design, develop, and integrate modern C and C++ embedded software running on Linux and real-time operating systems such as FreeRTOS.
  • Own the complete software development lifecycle from requirements and architecture through implementation, testing, debugging, and deployment.
  • Develop and maintain device drivers for fiber-optic components such as WSS and OCM and other hardware subsystems.
  • Collaborate with hardware teams on schematic reviews, hardware design input, and board bring-up.
  • Partner cross-functionally with optical, hardware, and test engineers in an Agile environment to meet product milestones and quality goals.
  • Develop and maintain unit tests, automation scripts, and test frameworks to verify and validate firmware functionality.
Desired Qualifications
  • Experience developing device drivers for ASICs or FPGAs.
  • Hands-on experience with CMake and scripting languages such as Bash, Python, Ruby, or Perl.
  • Experience implementing continuous integration and continuous delivery pipelines for embedded platforms.
  • Familiarity with Agile/Scrum methodologies.
  • Understanding of optical networking technologies such as OTN, Gigabit Ethernet, and related transport systems.
  • Proficiency in using oscilloscopes, logic analyzers, and diagnostic tools for system validation and debugging.

Adtran provides networking equipment and solutions for broadband access and fiber-optic networks. Its products include hardware and software that carriers and enterprises deploy to build and expand digital infrastructure, such as access nodes, switches, routers, and fiber-related components that enable high-speed connectivity. The company differentiates itself through a long-track record of supplying value-driven networking gear and by growing into a global end-to-end fiber networking provider, a path accelerated by its 2022 merger with ADVA Optical Networking, which expanded its scale and capabilities. Its primary goal is to support the global rollout of fiber and digital communications by delivering reliable, scalable networking solutions to carriers and enterprises.

Company Size

1,001-5,000

Company Stage

IPO

Headquarters

Huntsville, Alabama

Founded

1985

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Simplify Jobs

Simplify's Take

What believers are saying

  • Q2 2026 revenue rose 6.1% to $281.1 million; optical networking jumped 22%.
  • July 21, 2026 JPMorgan refinancing cut borrowing costs 200 basis points and extended maturity to 2031.
  • TEC and GOCare deployments expand Mosaic One API stickiness and recurring software workflows.

What critics are saying

  • July 2026 Adtran warned Q2 fell short on one customer delay and supply constraints.
  • German DPLTA shareholder lawsuits over Adtran Networks exit compensation drag into late 2027 or 2028.
  • A single hyperscaler or broadband project slip can crush margins and backlog timing again.

What makes Adtran unique

  • Adtran’s FSP 3000 and Mosaic One fuse optical transport with software control.
  • June 2026 Quantum Shield with euNetworks sells quantum-safe connectivity to regulated enterprises.
  • Huntsville and Munich teams span access, optical, and subscriber software across continents.

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Benefits

Flexible Work Hours

Employee Discounts

Paid Vacation

Health Insurance

Life Insurance

Disability Insurance

Growth & Insights and Company News

Headcount

6 month growth

10%

1 year growth

10%

2 year growth

10%
AD HOC NEWS
Sep 3rd, 2026
Adtran Networks stock dips as new Praruh deal underlines optical networking focus.

Adtran Networks stock dips as new Praruh deal underlines optical networking focus. Published on 09/03/2026 at 21:11 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS Adtran Networks stock came under pressure in the SDAX on September 3, 2026, even as a fresh framework agreement with Praruh Technologies highlights the Munich group's role in open optical transport and secure data networking. Adtran Networks (ISIN DE000A14U784) stock traded weaker in Frankfurt on September 3, 2026, with the SDAX-listed share down 1.31 percent to 22.60 EUR according to data from the German market overview as of the afternoon session. Stock moves lower in SDAX while long-term performance stays positive. According to the SDAX performance snapshot compiled by finanzen portals on September 3, 2026, Adtran Networks SE shares were quoted at 22.60 EUR, marking a decline of 1.31 percent on the day and placing the stock among the weaker components of the small cap index. A comparative performance table on a major US financial portal shows that the ADV.DE listing of Adtran Networks SE has still gained 6.07 percent year to date and 10.11 percent over the past twelve months as of September 3, 2026, underlining that the current setback comes after a period of positive longer term performance. New Praruh Technologies framework agreement extends hardware and software business. Fresh corporate news comes from a business agreement disclosed by Praruh Technologies Limited, which reported entering into a framework contract with Adtran Networks SE to procure telecommunications hardware, software, and related maintenance services. As detailed in the ScanX announcement dated September 3, 2026, the framework terms were executed by Praruh Technologies on August 11, 2026, with the agreement becoming effective upon the date of the last signature and running initially for two years before automatic one year renewals, giving Adtran Networks a multi year revenue pipeline tied to open optical transport and secure data transmission solutions. More on Adtran Networks stock and fundamentals. Read further background on Adtran Networks SE, its SDAX listing and recent figures via our topic overview and the company's own investor pages. Optical transport portfolio as growth driver. Adtran Networks SE is described in the Praruh Technologies disclosure as a Munich based firm specializing in open optical transport networking, secure data transmission, and network synchronization solutions, positioning its portfolio in the core of telecom and enterprise backbones. For investors, such framework agreements in optical transport and synchronization can support equipment orders and recurring maintenance services, adding to the group's order backlog and supporting its role as a European peer to larger global network equipment makers. Adtran Networks share price and market data. In the Frankfurt small cap segment on September 3, 2026, Adtran Networks stock at 22.60 EUR lagged other SDAX names, reflecting the 1.31 percent daily decline yet standing against a year to date gain of 6.07 percent and a twelve month increase of 10.11 percent based on compiled performance data. Adtran Networks key data. * Company: Adtran Networks SE * ISIN: DE000A14U784 * Ticker: ADV * Trading venue: Xetra * Price (as of September 3, 2026): 22.60 EUR * Sector / Industry: Communications equipment / networking * Index membership: SDAX Follow Adtran Networks on social platforms. Sponsored Ad These 5 stocks could change everything in 2026 - do you know them? A brand new special report reveals the 5 most promising stocks for the current year. Find out which assets top analysts have on their radar now and why acting quickly could be decisive. Disclaimer regarding our articles: This is not investment advice, nor is it a recommendation to buy or sell. Information regarding prices, companies, and markets is provided without guarantee; changes may occur at any time. Stock market transactions can result in significant losses. Our articles are created and reviewed, in whole or in part, automatically with the assistance of AI. en | DE000A14U784 | ADTRAN NETWORKS | boerse | 70051183 | bgmi

Associated Press
Aug 11th, 2026
TEC cuts support tickets with proactive outage alerts via Adtran and GOCare integration

Telephone Electronics Corporation (TEC) has reduced support tickets by deploying GOCare's OutageIQ solution integrated with Adtran's outage notification API and Mosaic One platform. The Mississippi-based fiber broadband provider now sends automated SMS and voice alerts to customers when network issues are detected, reducing inbound calls and providing support teams with real-time network context. David Freytag, TEC's VP of integration, said proactive messaging notifies customers immediately when problems arise, reducing frustration and unnecessary calls. Adtran's API triggers automated notifications based on subscriber status and operator-defined thresholds, whilst Mosaic One aggregates network data for partner integration. The collaboration between TEC, GOCare and Adtran was named a finalist for the 2026 Fiber Broadband Association Constellation Award. TEC serves communities across Mississippi, Alabama and Tennessee with over 3,000 miles of fiber infrastructure.

ADTRAN
Aug 11th, 2026
TEC reduces pressure on support teams with proactive outage communications powered by Adtran and GOCare.

TEC reduces pressure on support teams with proactive outage communications powered by Adtran and GOCare. 11 August 2026 News summary: * Fiber broadband providers need faster, more transparent ways to manage outages and reduce support surges * TEC is now using GOCare OutageIQ integrated with Adtran's outage notification API and Mosaic One to automate subscriber messaging * Open APIs turn network insight into actionable workflows, improving responsiveness and operational efficiency Adtran and GOCare today announced that Telephone Electronics Corporation (TEC) has improved outage responses and reduced inbound support tickets using GOCare's OutageIQ solution integrated with Adtran's outage notification API and Mosaic One. Serving communities across Mississippi, Alabama and Tennessee, TEC delivers fiber broadband services built on a foundation of community investment and reliable service. By combining proactive notifications with real-time network insights, the service provider can now inform customers as issues are detected while equipping support teams with immediate context. This transparency helps build subscriber trust and streamlines operations. "Reliable connectivity is essential for the communities we serve, and clear communication during an outage makes a real difference," said David Freytag, VP of integration at TEC. "Before this integration, service disruptions could quickly lead to high call volumes, putting pressure on our teams and leaving subscribers looking for answers. With proactive messaging in place, we can notify customers as soon as an issue is identified, reducing frustration and unnecessary calls. Real-time network visibility also enables faster, more accurate support when customers contact us, helping us maintain the dependable service experience subscribers expect." With proactive messaging in place, Adtran, Inc. can notify customers as soon as an issue is identified... David Freytag, VP of integration at TEC Adtran's outage notification API provides targeted triggers based on subscriber status and operator-defined thresholds, enabling automated notifications when specific conditions are detected. This helps service providers inform customers as issues arise, reducing uncertainty and easing the burden on operations teams. The capability is supported by Mosaic One, which aggregates network and subscriber data and makes it available for partner integration. GOCare's platform uses real-time network context to automatically alert affected subscribers using SMS and voice channels. Together, these capabilities turn network visibility into actionable support and communication workflows, helping TEC respond faster, reduce manual effort and manage support demand more effectively. "As networks scale, service providers need software architectures that make operational data easier to access, share and act on," commented Jeremy Harris, VP of North America sales at Adtran. "Our outage notification API helps providers and partners translate network events into timely subscriber communications, while Mosaic One brings together network and subscriber insight and exposes it through open APIs. Together, they give service providers the flexibility to embed proactive workflows into the systems they already use. TEC's deployment with GOCare shows the value of an open, extensible approach. It reduces integration friction, supports partner innovation and helps service providers build more responsive operations without adding complexity or locking them into a closed software ecosystem." "During an outage, subscribers want fast, clear answers without having to pick up the phone," noted Kevin Mitchell, VP of marketing and partnerships at GOCare. "Our platform is designed to help broadband providers manage those moments through timely updates delivered via the channels customers rely on. By integrating with Adtran's platform, we trigger communications from live network data, helping broadband providers reduce avoidable inbound calls, keep subscribers informed and strengthen their trust." The collaboration between TEC, GOCare and Adtran was recently named a finalist for the 2026 Fiber Broadband Association Constellation Award.

Yahoo Finance
Aug 4th, 2026
ADTRAN Q2 revenue rises 6% to $281M as optical networking climbs 22% and hyperscaler sales nearly double

ADTRAN Holdings reported second-quarter 2026 revenue of $281.1 million, up 6.1% year over year, though results fell short of guidance due to a delayed customer project and supply constraints. Optical Networking was the primary growth driver, with revenue rising 22% to $109.7 million. Enterprise, government and cloud revenue increased 47%, whilst hyperscaler revenue nearly doubled. Chairman and CEO Tom Stanton attributed the miss to timing issues rather than weakening demand, noting the affected customer has reaffirmed deployment plans. Component shortages limited the company's ability to fulfil incremental orders and created unfavourable product mix. Non-GAAP gross margin fell to 40.7%. ADTRAN forecast third-quarter revenue of $275 million to $295 million with a 1.5% to 5.5% non-GAAP operating margin.

Associated Press
Jul 28th, 2026
ADTRAN shares fall 15% after missing Q2 revenue guidance by up to $23M

Law firm Levi & Korsinsky has announced an investigation into ADTRAN Holdings after the company's shares fell approximately 15% on 22 July 2026. The drop followed ADTRAN's announcement of preliminary unaudited Q2 2026 revenue of $280 million to $282 million and non-GAAP operating margin of about 3.5% to 4.0%. These figures fell short of the company's previous guidance of $283 million to $303 million in revenue and 5% to 9% non-GAAP operating margin. The preliminary revenue range was also approximately $4.1 million to $6.1 million below analyst consensus estimates. The investigation focuses on ADTRAN's revenue and operating margin statements. Investors who purchased ADTN stock and suffered losses may be eligible to participate in the review.