Lead Developer: React & Ruby

As a Lead Developer at Thoughtworks, you will serve as the main liaison for our clients, ensuring the successful delivery of projects by your teams. This position requires a strategic mindset, enabling you to collaborate effectively with clients and translate their technical vision into reality. Balancing high-level strategy with tactical execution is essential, as you will engage both with clients and your team members.At Thoughtworks, we go beyond conventional standards, dedicating ourselves to delivering exceptional solutions that not only meet but exceed client expectations. Our engineering and delivery practices exemplify our commitment to quality, and we continuously seek opportunities to innovate and enhance our processes. As a Lead Developer, you will guide and mentor your team, fostering their growth and application of best practices.

The Invoicing team at Lightspeed Commerce Inc. forms part of the Financial Services division. This group designs and maintains tools that help with both sales and pre-sales activities, as well as managing customer accounts receivable. Their work supports reliable financial processes for clients and contributes to business growth. Role overview The Senior Full Stack Developer (Go & React) will work on Lightspeed’s core financial products. Responsibilities include developing and maintaining important features, updating and improving the codebase, adding new capabilities, resolving bugs, and contributing to architectural improvements. The team values practical technical skills and a collaborative mindset for evolving both tools and processes. This position also involves supporting production operations, including participation in on-call rotations and handling related operational tasks as required. Requirements Must be currently residing in Canada. Lightspeed will only consider applicants located within Canada for this role.

About UsAt Konrad Group, we are a pioneering digital consultancy committed to delivering innovative solutions that tackle complex business challenges for our global clientele. Our team thrives in a culture of creativity and excellence, where we strive to develop top-tier digital products that impact millions of users worldwide. We seek out exceptionally talented, analytical, and diligent individuals who are dedicated to continuous learning.Role OverviewAs a Mobile Developer specializing in React Native, you will play a crucial role in crafting high-quality cross-platform mobile applications. Your expertise will primarily be in React Native, but familiarity with iOS and Android development principles is advantageous. Collaborating within our software development team, you will contribute to both consumer-facing and enterprise applications. This position is perfect for developers who are confident in their skills and eager to join a dynamic and continually evolving team at Konrad.ResponsibilitiesDevelop maintainable, testable, and efficient software in collaboration with our exceptional team.Engage in code reviews and conduct thorough testing to ensure the delivery of superior software.Explore new technologies and tools, sharing insights with the team.Communicate effectively with all team members.

About Us: Established in 2001, Vivid Seats (NASDAQ: SEAT) stands as a premier online ticket marketplace, dedicated to seamlessly connecting fans with the live events, artists, and teams they cherish. We firmly believe in the transformative power of experiences and are unwaveringly committed to crafting products that foster human connections. Recognized as one of Built In's top workplaces in 2025, we understand that our people represent our most significant competitive advantage. Our culture is designed to empower employees to embrace challenges, promote collaboration, and continuously innovate through data-driven insights.We harness cutting-edge technology to enhance performance and unleash creativity. In our culture of innovation, we embrace AI tools to facilitate improved decision-making, streamline workflows, and deliver superior outcomes for our customers.

Join Sensor Tower, a leading provider of mobile market intelligence, as a Senior Frontend Engineer specializing in React. In this role, you will be pivotal in enhancing our user interface and ensuring a seamless experience for our clients. You will collaborate with cross-functional teams to design and implement high-quality and innovative web applications.

Primary Skills: Leadership experience, Cognos V10 expertise.Technical Experience:We are seeking a seasoned Cognos 10 Developer Lead with a minimum of 10 years of relevant experience in a Data Warehouse environment. The ideal candidate will have at least 7 years of hands-on experience within the Cognos ecosystem and a minimum of 5 years in a leadership role.The preferred qualifications include a strong grasp of modern software engineering methodologies, particularly in design, construction, testing, debugging, and providing ongoing technical support. Candidates should be able to clearly communicate workflows and processes related to their experience.We are looking for deep expertise in Oracle and SQL Server, as well as OLAP and Data Warehouse technologies.

Join IXL Learning, a pioneering developer of personalized educational products that impact millions globally. We are on the lookout for a passionate Software Development Team Lead to guide our efforts in creating innovative solutions that simplify integrations for IXL’s major school districts.At IXL Learning, we are committed to developing groundbreaking products that harness advanced technologies to tackle significant challenges in education. With millions relying on our tools for effective learning, we seek exceptional individuals who are eager to address real-world issues faced by students and educators.As a Software Development Team Lead on our Integrations team, you will spearhead the design and development of systems that ensure seamless implementations of IXL within various educational environments. This role offers an incredible opportunity to manage a team of talented engineers while providing hands-on technical and project leadership in a mission-driven, high-growth company. We are excited to create products that profoundly influence the lives of many and invite you to be a part of our journey.This position is full-time, based in our Toronto office, with a work schedule from Monday to Friday and the option to work from home one day per week.

About Borrowell:Borrowell is dedicated to empowering Canadians with the confidence to manage their finances effectively. Our mission is to provide individuals with the essential tools and insights to understand, build, and utilize their credit wisely.With 1 in 10 Canadians utilizing our services for comprehensive credit monitoring and tailored insights, we offer innovative solutions such as Credit Builder and rent reporting to help consumers enhance their creditworthiness, thereby gaining access to a broader array of financial products at competitive rates. Additionally, we provide personalized recommendations for financial products from Canada's most trusted providers, aligned with each member's credit profile and financial objectives.Our diverse and inclusive team is driven by a shared commitment to making a significant impact in the financial lives of Canadians. We foster a culture characterized by collaboration, humility, and innovation. If you aspire to join a company that is reshaping the financial landscape and empowering Canadians to realize their financial goals, we encourage you to explore career opportunities at Borrowell. Together, we can instill confidence in Canadians regarding their financial matters.About the Role:As a Senior Frontend Developer, you will spearhead the technical vision and execution of our marketing site and web experiences focused on growth. Your role will involve rebuilding and taking ownership of our marketing website utilizing React and Next.js, while implementing server-side rendering and modern routing techniques to enhance speed, SEO, AEO/GEO (AI/Generative Engine Optimization), and adaptability. You will work at the intersection of engineering, marketing, and design to convert site traffic into measurable business results, engaging hands-on with the codebase and influencing the roadmap, architecture, and best practices across the team.In the first 3-6 months, you can expect to:Conduct a comprehensive audit of the current marketing site, assessing performance, SEO, analytics setup, and experimentation capabilities to propose and implement a prioritized improvement strategy.Lead the overhaul or significant refactoring of the site using Next.js and a headless CMS, with a focus on future experimentation and rapid content updates.Establish or enhance analytics and event tracking to provide comprehensive visibility into acquisition, activation, and key conversion events.Initiate a series of growth experiments (e.g., pricing page tests, signup flow optimizations, new landing pages) and develop a repeatable experimentation framework.

Join our dynamic team at System Canada Technologies as the Lead Developer for Mainframe Assembler. In this pivotal role, you will oversee the development cycle, ensuring robust and efficient assembler code solutions that meet our clients' needs. You will collaborate closely with cross-functional teams, lead project initiatives, and mentor junior developers to elevate our technical capabilities.

Join our dynamic team at System Canada Technologies as we seek talented Guidewire professionals, including developers, leads, testers, and architects. This is an exciting opportunity to contribute to innovative projects within the insurance technology sector and make a real impact.

TouchBistro Inc. develops and supports mobile applications that serve over 15,000 restaurants. The engineering team delivers updates multiple times a day, relying on strong internal tools and clear system monitoring to keep everything running smoothly. Role overview This Senior Mobile Software Developer position centers on building and enhancing React Native features for both iOS and Android. The work spans the full development cycle, from shaping ideas to releasing polished updates that improve the restaurant experience. What you will do Lead feature development: Take charge of React Native projects, guiding them from concept through launch for both major mobile platforms. Deliver iteratively: Break down projects into manageable pieces, shipping improvements quickly and using modern tools, including AI, to boost productivity. Collaborate closely: Work with teammates to design scalable solutions, participate in code reviews, and help refine development processes. Prioritize quality: Integrate testing, performance checks, and reliability measures into daily work to maintain high standards. Mentor others: Share knowledge with colleagues, helping to shape stronger engineering practices and tools across the team.

We are seeking an experienced Technical Lead or Senior Developer specializing in IBM InfoSphere Master Data Management (MDM). The ideal candidate will possess a robust skill set with at least 6 years of professional experience in Java and J2EE technologies. You should have a minimum of 5 years of hands-on experience with IBM MDM 11.5, demonstrating proficiency in developing and maintaining customizations tailored to business needs.Key Responsibilities:• Lead projects independently as a technical expert.• Design technical solutions and create detailed documentation.• Collaborate effectively with ETL teams for batch loading and MDM data remediation.• Implement integration technologies and architectures, including Web Services, MQ, ETL, ESB, and SOA.• Optimize performance and manage capacity and sizing designs.Desired Qualifications:• A solid understanding of MDM concepts, data mapping, and modeling.• Familiarity with multiple database systems such as Oracle, DB2, and SQL Server.• Knowledge of high availability and disaster recovery strategies.

Role overview Range is seeking a Senior Frontend Software Developer based in Toronto, ON. This position centers on building and refining web applications that enhance user experience and align with the company’s product objectives. What you will do Develop and maintain features for the frontend of web applications Collaborate with cross-functional teams to ensure seamless integration between user-facing components and backend systems Influence the direction and structure of frontend architecture Support ongoing improvements to the product Requirements Background in building modern web applications Strong interest in current frontend technologies Ability to work effectively with engineers, designers, and product managers Drive to enhance products and user experiences

About Us:Zensurance is transforming the landscape of commercial insurance for Canadian businesses with a commitment to simplicity, speed, and accessibility through a digital-first experience.As a frontrunner in the InsurTech sector, we harness cutting-edge technology and profound industry insights to provide customized insurance solutions that empower businesses to flourish.Zensurance has garnered acclaim for its swift growth and significant impact within the industry: Deloitte’s Technology Fast 50 (2023, 2024, 2025) Deloitte’s Technology Fast 500 (2024, 2025) Top Insurance Employers (2022)At Zensurance, we embrace values of ownership, collaboration, and innovation. Our team excels in tackling complex challenges, questioning the norm, and creating a meaningful impact in an industry poised for transformation.If you are eager to contribute to a meaningful mission within a rapidly growing, customer-centric organization, we invite you to connect with us!We are on the lookout for a Tech Lead to join our Renewals team.The Renewals team manages the complete policy renewal process, which includes renewal pricing, rules, and validation. We develop scalable services and tools that automate manual processes, ensuring renewals are precise, transparent, and compliant—while allowing the business to adapt renewal rules safely and efficiently.In the role of Tech Lead, you will leverage your extensive technical expertise to guide the Engineering team's technical strategy, fostering a culture of iterative, independent development and deployment. Your main focus will be on addressing security and scalability challenges, working closely with the Product Manager, Team Lead, Engineers, and Staff Developers to design and implement systems and processes that enable your team to achieve high performance.As a senior member of the team, your ability to articulate your thoughts clearly, engage in complex discussions, manage your time effectively to meet critical deadlines, and mentor fellow team members will be invaluable.

Wisedocs AI is an innovative, rapidly expanding AI platform that revolutionizes the way insurance companies assess claims. With approximately $20 million USD raised and a team of over 100 professionals worldwide, we proudly serve more than 90 clients across North America and Australia, all while consistently doubling our revenue year over year.Founded by industry experts who have firsthand experience navigating the claims process, Wisedocs merges extensive domain expertise with cutting-edge AI, meticulously trained on over 100 million documents. Our platform simplifies intricate medical records into clear, structured insights, underpinned by expert human oversight.Join our mission-driven team dedicated to developing intelligent products that demystify complexity, expedite decision-making, and create a tangible impact when it matters most.Role OverviewWe are looking for a Front End Technical Lead to drive the future of AI-enhanced document interaction. In this pivotal role, you will guide a small team of engineers while designing and executing front-end features for our automation platform and machine learning engine. You will collaborate closely with customers to optimize our AI-powered user experience, architect components for next-generation document-based human/AI interaction, and conduct UX/UI experiments to enhance AI productivity.What We OfferOur offerings include three full-stack applications that are augmented by AI, enabling users to navigate medical claims efficiently. These applications leverage our machine learning pipeline, LLM summarization models, and RAG/context engineering. Additionally, we maintain a robust component library to standardize front-end components.Your ResponsibilitiesDesign and implement critical front-end features for our automation platform and advanced machine learning engine.Lead the development of customer-centric features in response to increasing client demands, strategically enhancing our core product with additional benefits.Create front-end components with a strong focus on usability, performance, and compliance with best coding practices.Manage a small engineering team effectively.Conduct experiments on UX/UI patterns to boost AI productivity.Ideal Candidate QualificationsProficient in front-end development, primarily using React.Demonstrated experience or keen interest in document editing and parsing.Experience collaborating with multiple engineering teams to deliver projects.Proven track record of producing high-quality, maintainable code.Strong problem-solving capabilities in both independent and collaborative settings.A passion for creating impactful work.

Our Work CultureAt TouchBistro, we empower over 15,000 restaurants by developing and scaling high-performance mobile applications. Our agile environment ensures we ship updates multiple times daily with advanced tooling and observability.Your RoleTake Ownership: You will fully own React Native features from their inception to deployment, ensuring exceptional user experiences on both iOS and Android platforms.Agile Development: Quickly build and iterate on features in small, shippable increments, leveraging modern tools and AI technologies to enhance efficiency.Collaborative Design: Work closely with your team to create scalable solutions, participate in insightful code reviews, and drive continuous improvements in our development processes.Quality Assurance: Integrate testing, performance optimization, and reliability into your workflow from the start, ensuring high-quality releases.Mentorship: Elevate the team's capabilities by mentoring junior developers and sharing your expertise.

Hello! We appreciate your interest in joining us at Lightspeed Are you on the lookout for an exciting new challenge? Whether you're actively searching or just exploring, you’ve come to the right place! As a Principal Software Developer at Lightspeed, you will be instrumental in shaping the design and architecture of our flagship Lightspeed Retail product, which serves thousands of merchants globally. Your hands-on contributions will drive the development of innovative solutions tailored to our customers' needs. You will elevate engineering excellence throughout the organization by providing technical direction, championing best practices, mentoring fellow developers, and empowering teams to create a sustainable architecture. This position requires you to be located in Canada and to work within EST/EDT hours. We provide flexible work arrangements, including fully remote, hybrid, or fully office-based options (in cities with local offices).

A Few Notes:Thriving B2B SaaS organization with teams operating across North America.This position offers a predominantly remote work arrangement based in Toronto, with monthly team meetings.Candidates must possess legal authorization to work in Canada; visa sponsorship is not an option.We are expanding our Engineering team and seeking a Full Stack Developer skilled in Python and React to join our applications team.We welcome applicants with experience levels ranging from Upper Intermediate to Staff Engineer.This role encompasses full-stack responsibilities, but we are open to candidates who have a stronger focus on back-end development.About Us:We are recognized as a leading retail analytics platform, empowering marketing teams and brands to gain insights from their retail data and execute targeted media campaigns without needing coding skills. Our mission is to enhance our clients' understanding of their customers while maximizing the return on their marketing investments. Notably, one of our significant clients is Home Depot.Our Technology Stack: Python, Django, React, Typescript, Azure.How We Work:We foster a collaborative environment with an array of exciting and complex projects.We support the exploration of new technologies, reflecting our identity as a modern tech company.Our focus is on sustainable development; we are already profitable and prioritize quality.With a remote work setup, we convene once a month in Toronto and hold biannual company retreats.About You:We are on the lookout for a remarkable Senior/Staff/Lead Full Stack Engineer eager to make a significant impact on our applications team.Key Responsibilities:Full Stack Development: Manage end-to-end client feature development, from initial design to final delivery.Integration Projects: Collaborate with industry leaders like Meta, TikTok, and Snapchat within the ad tech domain.User Interface Enhancements: Optimize the UI experience for our enterprise clients.Qualifications:Over 6 years of full-stack development experience in creating enterprise-level B2B/B2C SaaS applications.

At BitGo, we are the premier provider of digital asset solutions, specializing in custody, wallets, staking, trading, financing, and settlement services from highly secure regulated cold storage. Since our inception in 2013, we have dedicated ourselves to empowering clients to confidently navigate the digital asset landscape. With a robust global presence and several Trust companies, we cater to thousands of institutions, including leading brands, exchanges, platforms, and millions of retail investors globally. As a vital component of the digital economy, BitGo processes a significant volume of Bitcoin network transactions and stands as the largest independent digital asset custodian and staking provider worldwide. To learn more, visit www.bitgo.com.This position requires full-time onsite work at our Toronto office to foster collaborative team dynamics and innovative problem-solving.We are seeking a skilled Mobile Software Engineer with extensive experience in React Native to join our team. In this role, you will contribute to the development of cross-platform mobile applications that enrich the BitGo experience for our customers.

Join a Cutting-Edge Global SaaS Company | $28M Series B Funding Personalized Coaching for Professional Growth Toronto, Ontario – Hybrid (4 Days In-Office) Enjoy Uncapped Sales Bonuses Lead and Inspire a High-Performing Inbound SDR TeamAbout CloudTalkEmpowered by a recent January 2024 $28 million Series B investment from leading investors including KPN Ventures, Lead Ventures, Point 9, and HenQ, CloudTalk revolutionizes business communications with its AI-driven platform, serving over 4,000 sales and support teams. Our mission is to enhance customer experiences, turning them into a key competitive advantage for revenue growth.We cater to businesses of all sizes, from dynamic scale-ups like Deel and TIER to established giants like Nokia, Glovo, and Rakuten. With CloudTalk, companies can manage calls and messages seamlessly, allowing for impactful conversations.We aim to establish a unified communication ecosystem for sales and customer service teams, enabling professionals to engage in more productive and meaningful dialogues.The OpportunityAs CloudTalk expands strategically in Tier 1 markets, we are building a high-impact Inbound SDR team in Toronto. In the role of SDR Team Lead, you will oversee the daily performance of our inbound SDR team, guiding representatives, setting qualification standards, and collaborating closely with Account Executives for seamless pipeline transitions.This position is a player-coach role, where you will maintain a reduced individual SQO quota while managing team responsibilities, keeping you engaged in the processes you lead. As our Toronto team grows, this role presents a clear pathway to a full Sales Management position.What Awaits You: Be part of one of Europe’s fastest-growing SaaS companies Market leading AI products in a rapidly expanding sector Join a top-notch Business Development Organization with a team consistently achieving over 100% of targets Collaborate with a global team of talented professionals across Europe, the US, and Asia, both in-person and remotely. Explore our Life at CloudTalk on Instagram Experience our journey towards reaching $100M ARRYour Responsibilities:Lead, mentor, and develop a team of up to 10 inbound SDRs in Toronto, driving both individual and team SQO successMaintain personal SQO quotas while adhering to high qualification standardsConduct regular 1:1s, call evaluations, and pipeline reviews...