Are you passionate about software development for mobile network integration? Join our team to help take our telecom testing technology to new heights.
The CSG Stockholm team is developing an advanced telecom testing software solution called CSG Assure used by mobile operators across the globe, including leading operators like AT&T, Tata, Orange.
CSG Assure is an artificial test traffic generation platform consisting of a cloud-based application, controllers and test probes located in around 200 countries globally.
We are looking for a skilled developer to be part of our small, agile team to build applications that help our mobile operator customers validate and optimize mobile service performance for their roamers and local subscribers.
You will develop our next-generation mobile test probe for 3G, 4G, 5G and IoT to simulate mobile users using voice, SMS and data services. Main development is done in C & C++ on Linux platform.
We think that you are a highly skilled, analytical, customer-focused person with a strong developer profile that enjoys taking responsibility, making sure our customers get full value of our high-tech solutions.
Required Skills
- Completed Degree in Computer Science or related field
- 5+ years of professional experience in software development, preferably in telecom
- Strong proficiency in C++, data structures and multi-threading programming
- Linux system knowledge
- Solid understanding of the Radio Access Network (RAN) layer of mobile networks; the signaling and data exchange between devices and the network.
- Good knowledge of mobile network technologies (3G, 4G, IMS/VoLTE, 5G, IoT) and network signaling (e.g. SIP, RRC, NAS) as defined in 3GPP
- Excellent Communication, problem-solving skills and ability to work independently in a fast-paced environment.
Bonus Skills
- Experience in development against cellular modems; experience with either AT commands, QMI, or modem vendor SDK
- Experience with network monitoring tools and protocol analyzers like Wireshark, QCAT
- Familiarity with scripting languages, e.g. LUA, Shell, Perl
- Understanding of eUICC/eSIM, GSMA standards
- Android development experience
Why should you apply?
- Opportunity to work and grow your skillset in cutting-edge technologies
- Provide solutions to world-leading communication service providers
- Be part of a collaborative, innovative, international team
Key Words: Senior Developer, Software Engineer, Mobile Networks, C++, Linux, Modem Communication, Telecom Software
Location(s):
India RemoteAccommodation:
If you would like to be considered for employment opportunities with CSG and need special assistance due to a disability or accommodation for a disability throughout any aspect of the application process, please call us at +1 (402) 431-7440 or email us at [email protected]. CSG provides accommodations for persons with disabilities in employment, including during the hiring process and any interview and/or testing processes.
Our Guiding Principles:
Impact: Always help and empower others, whether they’re colleagues or customers. When our employees set their minds to something, great things happen.
Integrity: Do what’s right for our customers and our people while being authentic. We treat everyone with trust and respect—that’s just who we are.
Inspiration: Be bold in the way you think and passionate about the work you do. Test out innovative ideas without the fear of failure.
Our Story:
CSG empowers companies to build unforgettable experiences, making it easier for people and businesses to connect with, use and pay for the services they value most. For over 40 years, CSG's technologies and people have helped some of the world's most recognizable brands solve their toughest business challenges and evolve to meet the demands of today's digital economy.
By channeling the power of all, we make ordinary customer and employee experiences extraordinary. Our people [CSGers] are fearlessly committed and connected, high on integrity and low on ego, making us the easiest company to do business with and the best place to work. We power a culture of integrity, innovation, and impact across our locations, representing the most authentic version of ourselves to build a better future together. That's just who we are. Learn more about CSG Inclusion & Impact here.
Skills Required
- Completed Degree in Computer Science or related field
- 5+ years of professional experience in software development, preferably in telecom
- Experience in C and C++ development
- Strong proficiency in data structures and multithreading programming
- Linux system knowledge
- Solid understanding of the Radio Access Network (RAN) layer and signaling/data exchange
- Good knowledge of mobile network technologies (3G, 4G, IMS/VoLTE, 5G, IoT) and network signaling (SIP, RRC, NAS) as defined in 3GPP
- Excellent communication and problem-solving skills; ability to work independently
- Experience in development against cellular modems (AT commands, QMI, or modem vendor SDK)
- Experience with network monitoring tools and protocol analyzers like Wireshark, QCAT
- Familiarity with scripting languages (LUA, Shell, Perl)
- Understanding of eUICC/eSIM and GSMA standards
- Android development experience
CSG Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about CSG and has not been reviewed or approved by CSG.
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Flexible Benefits — A remote‑first, work‑from‑anywhere approach and paid volunteer time off are emphasized as core parts of the package. This flexibility is highlighted alongside standard health coverage and time‑off offerings.
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Leave & Time Off Breadth — Unlimited or generous PTO, paid holidays, separate sick time, and parental leave are described as standout elements, with mentions of an optional PTO buyback in some cases. These practices position time off as a notable strength.
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Retirement Support — A 401(k) with company match and immediate vesting is presented as a strong component of the package. This supports longer‑term financial security for employees.
CSG Insights
What We Do
Customer experience, commerce and payments have changed forever. With innovative new technologies like 5G and AI reshaping consumer expectations, it’s up to brands to deliver digital, engaging experiences that win over customers, no matter where they are in their customer journey. That’s where CSG comes in. CSG is a purpose-driven, high-growth SaaS platform company helping some of the world’s most recognizable brands solve their toughest business challenges. We’re a trusted partner to global companies that want to evolve to meet the demands of today’s digital economy, with future-ready solutions that drive exceptional customer experiences.
Why Work With Us
We're high on respect and low on ego, making us an easy company to do business with and the best place to work. We cultivate a culture based on integrity, innovation, and impact across all our locations, so our people show up as the most authentic version of themselves and can work together to build a more future-ready world. #ChooseCSG
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