Principal Software Engineer

Sinch Operator Software AB

DESCRIPTION Sinch Telco is a standalone business within Sinch. Our products propel communications services for mobile operators and enterprises around the globe. We are looking for a Principal Software Engineer with focus on AI-driven Development, to accelerate adoption of AI-powered development practices across Sinch Telco. In this role, you’ll be a hands-on practitioner, leveraging AI agents to design, build and deliver software while shaping how AI is applied in real engineering environments. Together we will move toward a paradigm where software developers manage teams of specialized virtual AI agents for requirements analysis, implementation, testing, documentation, and deployment. We intend to unlock new capabilities that enable teams to build and ship faster with higher quality, security, and maintainability. You see the future of AI-driven development clearly but understand that progress requires practical steps and patience. You demonstrate value through hands-on work and tangible results. You collaborate well with experienced colleagues as a peer and respect existing domain knowledge while contributing new perspectives and influence through quality of work. You are self-directed, proactive, and comfortable operating with ambiguity. The AI tooling landscape changes rapidly and you are energized by this pace. As our Principal Software Engineer, you will: Act as a highly productive, hands-on software engineer using AI agent orchestration to deliver features and products across multiple areas Define, evolve, and scale best practices, workflows, and tooling for AI-assisted development across coding, testing, documentation, and deployment. Evaluate, select, and configure emerging AI development tools and agent frameworks. Create reusable agent configurations, custom instructions, and workflows tailored to the organization's codebases. Partner with engineers, architects, and product managers to define clear requirements and product direction using a product management-informed perspective. REQUIREMENTS 8+ years of software engineering experience with proven ability to design, evaluate, and evolve software architectures. Solid understanding of distributed systems, APIs, and system integration. Experience with telecom systems, BSS/OSS, messaging infrastructure, or CPaaS is a plus. Hands-on experience applying AI-assisted development tools such as Copilot, Cursor, Claude, in real-world software delivery, not just experimentation. Experience working with AI-driven and agent-based development workflows, including autonomous coding agents and multistep task orchestration. Ability to define clear, structured, and decomposable requirements for both engineers and AI agents, with strong product awareness and understanding of the “why” behind solutions. Practical experience with Model Context Protocol, tool-use patterns, or equivalent integration standards for reliable multi-agent/tool orchestration. Experience with multi-agent frameworks such as CrewAI, AutoGen, LangGraph is a plus. Strong communication skills, with the ability to articulate technical concepts, document approaches, and collaborate effectively across teams. Our corporate language is English, please submit your application in English. We are not supporting relocation at this time. Applicants must either hold a Swedish or EU/EEA citizenship or have a valid Swedish work permit. OUR HIRING PROCESS We are committed to ensuring a recruitment process that is fair, objective, consistent, and inclusive. We believe in a two-way process and encourage you to ask questions throughout the journey. If this role isn't what you're looking for, please explore the other opportunities listed on our career page: https://www.sinch.com/careers/. No matter who you are, we hope you find an exciting path forward - hopefully with us!

Freeform

PRINCIPAL SOFTWARE ENGINEER  Freeform builds AI-native manufacturing systems that unify software, hardware, and physics to produce industrial-scale parts at the speed of human ideation. By treating manufacturing as a single integrated system, we unlock a new era of innovation where complex hardware is designed, built, and scaled without limits.  As a Principal Software Engineer, you will act in a technical leadership capacity responsible for driving innovative development efforts across our broad software ecosystem including edge computing, hardware control and automation, and high-rate telemetry systems. We are looking for someone who can work effectively with electrical, mechanical, and process engineering disciplines as well as technical executives to invent and implement complex, interdisciplinary performance requirements. As a startup, we expect this person to be hands on from architecture to implementation, writing code and solving the most complex issues. Ultimately, your contributions will result in the deployment of highly sophisticated software platforms capable of processing petabytes of high-rate data on the edge and automating factory systems around the world.  3D printing experience is not required to be successful here - rather we look for smart, motivated, collaborative engineers who love solving hard problems and creating amazing technology! Responsibilities: * Provide architectural leadership for the development of a complex, highly integrated software system  * Take on the most challenging development and implementation efforts in our software stack  * Lead system level integration and validation efforts  * Provide technical project management from conception to production when required by the size/scope of the project  * Drive communication and collaboration with the broader engineering team by working side-by-side with the electrical, mechanical, and process engineering teams  * Innovate on system capability and performance, accelerate engineering progress, and push the bounds of Freeform’s technology forward   Basic Qualifications: * 10+ years of hands-on experience architecting and implementing complex software systems using C/C++/Rust  * Experience in industries such as robotics, IoT, autonomous cars, UAVs, or similar autonomy-centric environments  * Experience working in a high-performance compute environment (FPGAs or GPUs)  Nice to Have: * BS, MS, or PhD in Computer Science, Computer Engineering, Electrical Engineering, or related field  * Experience with edge computing, high speed data acquisition, and real time closed-loop-control systems  * Experience with hardware acceleration for machine learning or artificial intelligence  * Experience working in a startup or leading-edge technology environment  * Creative thinker able to apply first-principles reasoning to solve complex problems  * Passion for how software can be used to impact the physical world  Location: * Based in Hawthorne, our vertically integrated facility brings technology development, R&D, and production together under one roof. We operate at the center of LA’s deep tech ecosystem, surrounded by some of the most ambitious hardware innovation happening anywhere in the country. * Our fast-paced, cross-functional environment is built on close collaboration, and as such, this role requires full-time onsite presence (five days a week), with very limited exceptions. What We Offer: * We have an inclusive and diverse culture that values collaboration, learning, and making deliberate data-driven decisions. * We offer a unique opportunity to be an early and integral member of a rapidly growing company that is scaling a world-changing technology. * Benefits * Significant stock option packages * 100% employer-paid Medical, Dental, and Vision insurance (premium PPO and HMO options) * Life insurance * Traditional and Roth 401(k) * Relocation assistance provided * Paid vacation, sick leave, and company holidays * Generous Paid Parental Leave and extended transition back to work for the birthing parent * Free daily catered lunch and dinner, and fully stocked kitchenette * Casual dress, flexible work hours, and regular catered team building events * Compensation   * As a growing company, the salary range is intentionally wide as we determine the most appropriate package for each individual taking into consideration years of experience, educational background, and unique skills and abilities as demonstrated throughout the interview process. Our intent is to offer a salary that is commensurate for the company’s current stage of development and allows the employee to grow and develop within a role. * In addition to the significant stock option package, the estimated salary range for this role is $200,000-$400,000. The upper end of the range is reserved for individuals who demonstrate exceptional experience, deep domain mastery, and a proven history of high performance and impact. * Freeform is an Equal Opportunity Employer that values diversity; employment with Freeform is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

Gram Games

Who We Are: Gram Games is the studio behind popular titles like 1010!, Six!, Merge Dragons!, and Merge Magic!, with more exciting projects in the pipeline. We are proudly part of the Zynga & Take-Two Interactive family. We do things differently here: we work in small self-managing teams, giving you an incredible amount of ownership, autonomy, and impact.  At Gram, everyone is expected to have a razor-sharp focus on creating a tangible impact on their team, their work environment, and on the overall company strategy. If you are motivated by autonomy, constant improvement, collaboration, and a sense of belonging, this is the place for you. POSITION OVERVIEW: As a Principal Software Engineer, you will lead the architecture and development of highly advanced software systems. You will provide strategic technical direction, mentor senior engineers, and ensure that software solutions meet business and technical requirements. WHAT YOU’LL DO: * Define architectural standards and frameworks for software development. * Own the development of critical systems that require high reliability. * Be involved in developing technical roadmaps and attend planning sessions. * Evaluate and embrace new technologies to solve business needs. * Support the engineering team in developing skills and promoting teamwork. * Monitor project timelines and work progress to ensure quality. * Provide technical leadership and mentorship to software developers. * Ensure the technical feasibility and prioritization of new game features. WHAT YOU BRING: * Strong experience in software development, with a proven track record of delivering high-quality, scalable systems. * Proficiency in C# with essential knowledge of Unity. * Proficiency in client-backend integrations. * Strong understanding of software architecture and design principles. * Excellent problem-solving skills, with the ability to break down complex technical challenges. * Dedication to maintaining code quality through code reviews and alignment with industry standards CI/CD Processes. * Having a very strong understanding of Git and code repository management. * Ability to analyze product code and propose improvement solutions for better performance. * Familiarity with game development and understanding of the gaming industry. * A hands-on management style, with involvement in end-to-end process tracking. * Excellent communication and leadership abilities. * Skill in coordinating with other teams leads to synchronising the development processes. * Understand general business concepts to interpret critical metrics for the business/product (such as DAU, ARPDAU, etc.). * Bachelor’s degree or equivalent experience in Computer Science or a related field. WHAT WE OFFER YOU: In return for bringing your expertise to this top-priority role, we offer some of the best benefits in the gaming industry. * Highly competitive salary * Private medical care * Company bonus scheme * Relocation assistance for those moving to the UK * Awesome onsite chef serving breakfast, lunch, and lots of treats (naughty and nice) * Life insurance and a favorable pension scheme * Healthcare cash plan including dental and optical coverage * Amazing tech to work with and consoles to play and relax with everywhere you look #LI-Hybrid We are proud to be an equal opportunity employer, which means we are committed to creating and celebrating diverse thoughts, cultures, and backgrounds throughout our organization.  Employment with us is based on substantive ability, objective qualifications, and work ethic – not an individual’s race, creed, color, religion, sex or gender, gender identity or expression, sexual orientation, national origin or ancestry, alienage or citizenship status, physical or mental disability, pregnancy, age, genetic information, veteran status, marital status, status as a victim of domestic violence or sex offenses, reproductive health decision, or any other characteristics protected by applicable law. As an equal opportunity employer, we are committed to providing the necessary support and accommodation to qualified individuals with disabilities, health conditions, or impairments (subject to any local qualifying requirements) to ensure their full participation in the job application or interview process. Please contact us at jobs@gram.gs to request any accommodations or for support related to your application for an open position. Please be aware that Zynga does not conduct job interviews or make job offers over third-party messaging apps such as Telegram, WhatsApp, or others.  Zynga also does not engage in any financial exchanges during the recruitment or onboarding process, and will never ask a candidate for their personal or financial information over an app or other unofficial chat channel.  Any attempt to do so may be the result of a scamp or phishing attack, and you should not engage.  Zynga’s  in-house recruitment team will only contact individuals through their official Company email addresses (i.e., via a zynga.com, take2games.com, naturalmotion.com, smallgiantgames.com, themavens.com, gram.gs email domain).