About us
CallHub provides cloud based communication software for nonprofits, political parties, advocacy organizations and businesses. We have delivered over 200 millions messages and calls for thousands of customers. We help political candidates during their campaigns in getting their message across to their voters, conduct surveys, manage event/town-hall invites and with recruiting volunteers for election campaigns. We are profitable with 8000+ paying customers from North America, Australia and Europe. Our customers include Uber, the Democratic Party, major political parties in the US, Canada, UK, France and Australia.
About the Role
As a Senior/Lead Software Engineer at CallHub, you will play a critical role in leading the development and enhancement of our cloud-based communication and telephony platform (SaaS). You will be responsible for designing, building, and optimizing scalable, high-performance backend systems that support the rapid growth of our global user base, ensuring reliability, security, and customer satisfaction at every step. In this role, you will collaborate with cross-functional teams of highly skilled software engineers, operations engineers, and product managers to drive innovation and create products that delight customers by exceeding their expectations. You will lead technical decision-making, mentor engineers, and be responsible for building robust systems that are always available, while also contributing to the development of automation tools to streamline processes and improve efficiency. We are seeking experienced engineers with a deep understanding of software engineering principles, strong problem-solving skills, and a passion for leading teams to deliver impactful, customer-focused solutions. If you thrive in a fast-paced environment, love solving complex technical challenges, and are excited about mentoring and guiding the next generation of engineers, we’d love to hear from you!
Your Responsibilities
- Lead the design, development, and deployment of complex, scalable, reliable, and highly available features for world-class SaaS products and services.
- Guide the engineering team in adopting best practices for software development, code quality, and architecture.
- Make strategic architectural and technical decisions, ensuring the scalability, security, and performance of software applications.
- Proactively identify, prioritize, and address technical debt to improve system performance, maintainability, and long-term scalability, ensuring a solid foundation for future development.
- Collaborate with cross-functional teams (product managers, designers, and stakeholders) to define project scope, requirements, and timelines.
- Mentor and coach team members, providing technical guidance and fostering professional development.
- Oversee code reviews, ensuring adherence to best practices and maintaining high code quality standards.
- Drive continuous improvement in development processes, tools, and technologies to increase team productivity and product quality.
- Stay updated with the latest industry trends and emerging technologies to drive innovation and keep the team at the cutting edge.
- Ensure project timelines and goals are met, managing risks and resolving any technical challenges that arise during development.
- Foster a collaborative and inclusive team culture, promoting open communication and problem-solving.
- Imbibe and maintain a strong customer delight attitude while designing and building products.
What we’re looking for
- 6+ years of experience in software engineering, with a proven track record of leading engineering teams and mentoring junior developers.
- Strong expertise in designing and developing scalable backend systems, web services, and REST APIs using Python/Django or similar frameworks.
- Solid understanding of cloud-based architectures and microservices, with experience in deploying and maintaining SaaS applications.
- Solid experience in software engineering principles, including CI/CD pipelines, unit testing, code reviews, and version control (e.g., Git).
- Proficiency in working with databases like PostgreSQL, and experience in optimizing queries and ensuring high availability.
- Deep knowledge of computer science fundamentals, including data structures, algorithms, and software design principles.
- Experience with frontend technologies such as React, JavaScript, HTML, and CSS, and an understanding of how they integrate with backend services.
- Ability to quickly adapt to new technologies and make informed technical decisions in dynamic environments.
- Strong attention to detail, with the ability to empathize with customer needs and translate them into impactful software solutions.
- Excellent written and verbal communication skills, with the ability to clearly articulate technical concepts to both technical and non-technical stakeholders.
- Collaborative team player, willing to support and work closely with cross-functional teams.
- Bachelor’s or Master’s degree in Engineering or Computer Science from a reputable institution.
What you can look forward to
- Leadership and Ownership: Lead and oversee the entire software development lifecycle, from system design and development (backend and frontend) to QA and DevOps, with a focus on driving high-impact projects.
- Strategic Impact: Witness the direct impact of your work on our users and the overall success of the company, shaping products and solutions that make a significant difference.
- Innovative Technologies: Stay at the forefront of technology by working with the latest tools and frameworks, as we continuously innovate to deliver reliable and scalable solutions for our customers.
- Collaborative Culture: Engage in a culture of openness and collaboration, where your insights and leadership help drive the company’s success and delight our customers.
About CallHub
About
Founded in 2011, CallHub is an easy to use and award winning voice broadcasting, phone banking and SMS broadcast software that seamlessly integrates with users' existing systems. They are used across 200 countries and world renowned campaigns run by Uber, Greenpeace, Harvard University, Princeton University, Change.org, Save the Children, United Workers Union, among many others.
Check out the video below for a sneak peek into the product!
CallHub, headquartered in Washington DC, is the leading digital organizing platform for political campaigns, nonprofits, advocacy groups, and businesses seamlessly interact with their audiences worldwide.
The product
Their call center software enables unlimited agents to connect with people over a call to have personalized one-on-one conversations. The range of automated dialers (which include Power, Preview, Predictive, and Fast Click dialers) gives clients complete control over their dialing speed based on your needs while maintaining compliance. With features like answering machine detection, voicemail drop, phone number verification, and many more, the software ensures you spend maximum time having quality conversations. CallHub's mass texting solution lets users connect with people over SMS with solutions like Bulk SMS, MMS, SMS Opt-in and peer-to-peer texting.
Tech stack
Company video
Candid answers by the company
Connecting people and enabling conversations was always the core idea. In 2011, Augustus Franklin created a chat tool that allowed visitors to a webpage to communicate with each other. This concept evolved initially into an engagement tool for online marketplaces and eventually into the foundation of what it is today – a comprehensive campaigning platform, one that empowers changemakers, organizations, and businesses to reach millions of constituents and facilitates change, one message, one call, one campaign at a time!
Photos
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- Overlook development of all consumer products in JAVA and
- Optimize components for maximum performance across a vast array of web-capable devices and
- Focus on code maintainability and performance of
- Provide technical advice and assists in solving programming
- Continuously create new and interactive features that would help to improve user experience and user engagement.
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About Astra:
Astra is a cyber security SaaS company that makes otherwise chaotic pentests a breeze with its one of a kind Pentest Platform. Astra's continuous vulnerability scanner emulates hacker behavior to scan applications for 9300+ security tests. CTOs & CISOs love Astra because it helps them fix vulnerabilities in record time and move from DevOps to DevSecOps with Astra's CI/CD integrations.
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We've been awarded by the President of France Mr. François Hollande at the La French Tech program and Prime Minister of India Shri Narendra Modi at the Global Conference on Cyber Security. Loom, MamaEarth, Muthoot Finance, Canara Robeco, ScripBox etc. are a few of Astra’s customers.
Role Overview:
As a back-end engineer you will be responsible for developing and maintaining the platform/dashboard backend. This would involve developing & maintaining RESTful services for vulnerability management, scan orchestration, inventory management and platform features such as on-boarding, trust centers, certificates, payment integrations, vulnerability ingestion, authentication etc.
You should have a strong background in backend programming (Symfony preferred, or Laravel) and have experience with an event driven, async & distributed architecture.
During the first 6 months of your role, you will be involved in the 0->1 journey of two of our upcoming products in our platform along with the respective product owners.
Love solving hard problems? Want to build high impact products rooted in first principles? Is coding your poetry? Join us in shaping the future of cyber security.
Roles & Responsibilities
- Design, develop, and maintain backend services and APIs using Symfony PHP framework. What you create is also what you own.
- Collaborate with front-end developers to integrate user-facing elements with server-side logic.
- Collaborate with scanner teams to orchestrate scans, ingest vulnerabilities, configure scanners etc.
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- Implement security and data protection measures.
- Triage, troubleshoot and upgrade existing systems.
- Ship code to production multiple times a day/week.
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- Test your own features, and write test cases for continuous automated testing.
- Participate in code reviews and contribute to best practices and standards.
What we are looking for:
- 3 years experience in a similar role or similar working experience.
- Strong background in PHP backend programming. Symfony preferred, or Laravel.
- Strong understanding of software architecture principles and design patterns.
- Experience with an event driven (subscribers/listeners), async (MessageHandlers & job queues) & distributed (load-balanced) architecture.
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- Understanding of concepts such as Dependency Injection, ORM, data validation, error handling etc.
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- Experience with Agile methodologies.
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- Strong communication and interpersonal skills, with the ability to collaborate effectively with cross-functional remote teams.
- Demonstrated track record of delivering high-quality software products on schedule.
- Knowledge of industry best practices in software development, security, and compliance.
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What We offer:
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- Fully remote, agile working environment.
- Good engineering culture with full ownership in design, development, release lifecycle.
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- Holistic understanding of SaaS and enterprise security business.
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- Annual trips to beaches or mountains (next one is to Wayanad).
- Open and supportive culture.
- Health insurance & other benefits for you and your spouse. Maternity benefits included.
1. 6 months to 4 years hands on experience of PHP Laravel framework.
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• Degree in Computer Science, Engineering or a related field
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- Working on really tough problems that challenge you
- Being part of a small team where you are impactful
- 50K+ API requests/min
- 25K+ concurrent users every second
- Code, code & code
- Independently implement small to medium features
- Pick up & master new technologies
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- A team that loves coding & building exceptional quality products
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You will be responsible to coordinate with design team, setting up Magento with database, building modules, extensions and testing. You should have good knowledge of object oriented programming.
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-> Building Magento website and connect with Database.
-> Code for templates.
-> Developing Magento modules in PHP
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Senior Software Engineer (Python)
Job description
Fulfil’s software engineers develop the next-generation technologies that change how millions of customer orders are fulfilled by merchants. Our products need to handle information at massive scale. We're looking for engineers who bring fresh ideas from all areas into our technology.
As a senior software engineer, you will work on our python based ORM and applications that scales to handle millions of transactions every hour. This is mission critical software and your primary focus will be building robust and scalable solutions that are easy to maintain.
In this role, you will be collaborating closely with the rest of the team working on different layers of infrastructure in an international environment. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product are important.
What You’ll Do:
- Own definition and implementation of API interfaces (REST and GraphQL). We take pride in our 100% open API with over 600 endpoints.
- Implement simple solutions to complex business logic that enables our merchants to manage financials, orders and shipments across millions of transactions.
- Build reusable components and packages for future use.
- Translate specs and user stories into reviewable, test covered patches.
- Peer review code and refactor existing code.
- Integrate with our eCommerce partners (Shopify, BigCommerce, Amazon), shipping partners (UPS, USPS, FedEx, DHL) and EDI.
- Manage Kubernetes and Docker based global deployment of our infrastructure.
Requirements
We’re Looking for Someone With:
- Experience working with ORMs like SQLAlchemy or Django
- Experience with SQL and databases (Postgres preferred)
- Experience in developing large server side applications and microservices
- Ability to create high quality code
- Experience with python testing tools (pytest) and test automation
- Familiarity with code versioning tools like GIT
- Strong sense of ownership and leadership quality
- Experienced in the tools of our web stack
- Python
- Celery
- Postgres
- Redis
- RabbitMQ
Nice to Haves:
- Prior experience at a growth stage Internet/Software company
- Experience with ReactJS, Google Cloud, Heroku
- Cloud deployment and scaling experience
About Us:
Fulfil.io helps high growth, high volume merchants simplify operations and scale for growth. With the rise in omni-channel commerce, Fulfil was founded with the simple idea that merchant operations need to be simplified in order to deliver amazing retail experiences. Fulfil enables businesses to turn their back office operations into an accelerator for growth by integrating order management, inventory management, warehouse management, vendor/supplier management, wholesale, manufacturing, financials and customer service, into one seamless solution. We believe merchants should love their operations platform, and we work hard to make that happen every single day. Fulfil.io is a trusted solution for brands like EndySleep, Mejuri, Lie-Nielson Toolworks, and many more.
Fulfil.io is a venture backed technology company with offices in San Francisco, Toronto, and Bangalore. The team is made up of people who want to feel challenged at work, be the best at their craft and learn from one another. We come from different backgrounds and experiences, all passionate about the work we do, the team we do it with, and the customers we do it for. Join us in our journey to simplify operations and empower merchants around the world!
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- Website development using LAMP technologies.
- Responsible for the development of new applications and enhancements in an existing application.
- Responsible for testing of the application, performance analysis, etc.
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What does it need?
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- Knowledge of PHP & MySQL is a must.
- Should be capable of deploying application on Apache Web Server.
- Knowledge of HTML, CSS & JavaScript.
- Knowledge of Linux/Ubuntu etc will be an added advantage.
- Knowledge of jQuery and Ajax will be an added advantage.