Python
Django
PostgreSQLAbout 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.
Subodh Popalwar
Software Engineer, Memorres
About CallHub
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.
PythonDjango
React.js
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!
Similar jobs
PythonDjango
FlaskAbout Merito :-
Merito is a curated talent platform where we identify, assess, and connect candidates for matching job opportunities. We are working with the mission to change the way hiring is done. The company is founded by a team consisting of alumni from IIM Ahmedabad, McKinsey with more than 2 decades of experience in recruitment, training, and coaching.
About Our Client :-
Our client is headquartered in California and Y Combinator backed Shopify-like platform for creators & knowledge professionals (coaches, instructors, experts, artists etc.) to launch, manage and grow their business online. Founded by IIT/ IIM/ BITS/ Yale/ BCG Alumni and 3X Entrepreneurs, they are well funded and backed by top Indian VC firms along with start-up veterans like Kunal Shah (CRED). The company is founded by alumni from top IITs, IIMs, BITS, Yale including ex-entrepreneurs and from firms such as BCG, Hike, Dunzo and P&G.
Since the launch of its first version in December 2020 they have grown 25X. Creators have earned more than $1 Million since launch through the platform.
We have just closed our series A (yet to announce) and are looking to build out our leadership team across functions.
Job Description :-
We are looking for Sr. Backend Developers who have the passion to solve complex problems at scale and who will be able to drive the technical architecture and product development
Your responsibilities :-
- Own and drive product development and engineering management in a fast paced, rapidly changing environment.
- Understand business processes and functional requirements and map them to tangible software products using apt, efficient and quality technical solutions.
- Build and lead the technical team with focus on infusing culture resulting in energetic & positive outcomes.
- Review and influence new evolving design, architecture, standards and methods with stability, maintainability and scalability in mind.
- Constantly be on the lookout for ways to improve the product and processes built for resolving issues proactively and deliver better value to the customers.
Required Skills :-
- A completed Bachelor`s degree in Computer Science or related field
- 3+ years professional experience in software development
- Proficiency in, at least, one modern programming language; Python would be preferred with knowledge of Django
- Computer Science fundamentals in object-oriented design
- Computer Science fundamentals in data structures
- Computer Science fundamentals in algorithm design, problem solving, and complexity analysis
- Git or other distributed version control system
- Experience in early-stage startup environment and inherent hustle factor would be an advantage
Skills
Pyhton,Postgres,Redis
Regards
Team Merito
.NET
C#
HTML/CSS-
Proficient in .NET Framework, C#, ASP.NET, MVC, Web API, Entity Framework.
Strong design capabilities with SOLID principles using C#.
Working knowledge in WCF.
Database knowledge in SQL
Design, and deliver innovative software solutions in collaboration with Technology teams.
Develop high-quality production code
Experience in HTML, CSS, Javascript.
Experience in React / Angular or Typescript preferred
Laravel
PHPWe are looking for a Back-End Web Developer responsible for managing the interchange of data between the server and the users. Your primary focus will be the development of all server-side logic, definition, and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front end. You will also be responsible for integrating the front-end elements built by your co-workers into the application. A basic understanding of front-end technologies is therefore necessary as well.
Responsibilities
- Actively participate in the overall application lifecycle.
- Focus on coding and debugging.
- Collaborate with front-end developers.
- Define and communicate technical and design requirements.
- Build a high-quality reusable code that can be used in the future.
- Create sustainable and functional web applications with clean codes.
- Learn about new technologies and stay up to date with current best practices.
- Conduct UI tests and optimize performance.
- Train, help, and support to other team members
Requirements
- Hands-on backend web development experience.
- Proficient knowledge of a backend programming language and an in-depth understanding of web development.
- Knowledgeable of front-end technologies and platforms, such as JavaScript, HTML5, and CSS3.
- Proven experience creating user authentication and authorization between multiple systems, servers, and environments.
- Capability to integrate multiple data sources and databases into one system.
- Proven experience managing the hosting environment, including database administration and scaling an application to support load changes.
- Ability to set up and administer backups, data migration, transformation, and scripting.
Skills
- Coding (HTML/CSS3)
- Debugging
- Programming (JavaScript, PHP, Magento, OOPs,)
- PHP Framework
- Analytical Skills
- Web Development
- API
PostgreSQL
Create and maintain database tables, views, indexes, and triggers.
Implement and maintain database code in the form of stored procedures, scripts, queries, views, triggers, etc.
Develop and maintain high-quality stored procedures.
Write low cost, high-quality database queries and code while maintaining data quality, privacy, and security
Profile databases, measure database performance and troubleshoot complex database issues, and IO bottlenecks.
Optimize database queries and ensure table locking/deadlocks happen in production.
Optimize large, complicated SQL statements & Stored Procedures.
Cost optimization of Amazon instances using databases.
Knowledge of database design principles, query optimization, index management, integrity checks, statistics and isolation levels
Knowledge of message queuing, indexing, and high-performance data concept
Knowledge of JSON and PostgreSQL support for JSON.
Good Grasp of ETL concepts
Work with front-end developers to define simple yet powerful APIs
Work with DBAs to ensure the efficiency of database code, integrity of data structures and quality of data content.
Coordinate with product managers and leadership teams to build effective database objects
Excellent verbal and written communication skills
Good attitude towards work and flexibility
Ability and willingness to handle multiple tasks in a fast-paced environment
Ability to evaluate alternative solutions and/or workarounds
PythonDjangoFlaskHTML/CSSRequired Skills:
● Expert in Python, with knowledge of at least Django (More web frameworks are a plus)
● Familiarity with some ORM (Object Relational Mapper) libraries
● Able to integrate multiple data sources and databases into one system
● Understanding of the threading limitations of Python, and multi-process architecture
● Good understanding of server-side templating languages (such as Jinja 2, Mako, etc depending on your technology stack)
● Basic understanding of front-end technologies, such as JavaScript, HTML5, and CSS3 (is a plus)
● Understanding of accessibility and security compliance
● Knowledge of user authentication and authorization between multiple systems, servers, and environments
● Understanding of fundamental design principles behind a scalable application
● Familiarity with event-driven programming in Python
● Understanding of the differences between multiple delivery platforms, such as mobile vs desktop, and optimizing output to match the specific platform
● Able to create database schemas that represent and support business processes
● Strong unit test and debugging skills
● Proficient understanding of code versioning tools
● Knowledge of application deployment process and server set up
● Integration of data storage solutions
Responsibilities:
● Owning one or more of the web services; adding new features, resolving bugs, and refactoring/ improving code base.
● Design and implementation of low-latency, high-availability, and performant applications
● Translating product requirements into functional, maintainable, extensible software that is in-line with company objectives.
● Good knowledge of software engineering best practices, including unit testing, code reviews, design documentation, debugging, troubleshooting, & agile development.
● Work on cutting-edge web technologies to make a powerful impact on 1M+ enterprise users
● Be part of a growing team that will design, develop, and test software and cross-product applications which span across different Planview products
● Work in an agile engineering team writing maintainable and scalable code for software components and influencing team decisions
● Contribute to the product’s architecture vision and execution, working closely with cross-product teams and other leaders within the R&D department
● Collaborate with stakeholders to imagine, design, develop, test, and launch software that impacts our customers and inspires your peers
● Drive continuous improvement of software quality, CX and maintainability of features
● Continuous learning of technology trends, tools, and approaches, including sharing this knowledge with your team
JavascriptPythonDjangoFlask● Managing and guiding a team of junior developers for timely delivery of product and
milestones
● Optimization of the application for maximum speed and scalability
● Implementation of security and data protection
● Design and implementation of data storage solutions
● Design & Build: Designing and developing high-volume, low-latency applications for
mission-critical systems, and delivering high-availability and performance.
● Collaborate - Collaborating within your product streams and team to bring best
practices and leverage a world-class tech stack.
● Measurable Outcome - You will need to set quantifiable objectives that encapsulate
the quality attributes of a system. The fitness of the application is measured against
set marks.
● DevOps - You will need to set up every essential (tracking/alerting) to make sure the
infrastructure/software you built is working as expected.
● Design and development of our REST APIs
● Help maintain code quality, architecture, and automation
Required Knowledge and Skills
● 3 - 5 years of experience working in backend development technologies and DevOps
● Highly curious and ready to dive into complex technical challenges.
● Proficiency in development and scripting in Python, Django/Flask framework.
● Database design and management, including being up on the latest practices -
bonus points for MySQL and MongoDB
● User authentication and authorization between multiple systems, servers, and
environments
● Integration of multiple data sources and databases into one system
● Management of hosting environment, including database administration and scaling
an application to support load changes
● Setup and administration of backups
● Understanding differences between multiple delivery platforms such as mobile vs
desktop, and optimizing output to match the specific platform
● Creating database schemas that represent and support business processes
● Implementing automated testing platforms and unit tests
● Understanding of “session management” in a distributed server environment
● Server management and deployment for the relevant environment
● Appreciation for clean and well-documented code
● Hands-on experience with architecture and structural design patterns
● Expertise in designing, developing, deploying, and integrating RESTful APIs
● Ability to understand business requirements and translate them into technical
requirements
● A knack for benchmarking and optimization
● Proficient understanding of code versioning tools, such as Git
Personality
● Requires excellent communication skills – written, verbal, and presentation.
● You should be a team player.
● You should be positive towards problem-solving, have a very structural thought
process to solve problems
● Interest to work in a high paced start-up environment with a large amount of learning.
● Good understanding of different frameworks, and be able to pick up new
technologies at ease.
● You should be agile enough to figure out a need for new technologies/frameworks
and learn new technology for better product performanc
PHPLaravel
CodeIgniterJob Purpose: We Are Looking For A Laravel Developer Who Is Dedicated To The Craft, Writes Code That Theyare Proud Of And Can Hit The Ground Running. Qualification: Any IT Graduate Responsibilities:
• Write “Clean”, Well-Designed Code.
• Contribute In All Phases Of The Development Lifecycle.
• Develop And Deploy New Features To Facilitate Related Procedures And Tools If Necessary. Skills Required:
• Hands On Experience In Core PHP.
• Good Experience In Laravel Is Must.
• Good Command Over PHP Framework Like Codeigniter Is An Added Advantage.
• Excellent Knowledge Of MySQL.
• Good Knowledge Of Relational Databases, Version Control Tools.
• Should Be Able To Develop Web Services.
• Knowledge Of Object Oriented PHP Programming And MVC Pattern.
• Good Command Over AJAX/JQuery/HTML/CSS
PostgreSQL- Design, develop and manage data on various open-source SQL databases
- End-to-end performance tuning of Oracle, MariaDB, MySQL, PostgreSQL, and Aurora against very large data sets
- Database cluster connectivity and security
- Conduct database training
- Software installation and configuration
- Database patching and upgrading
- Using monitoring and management tools
- Troubleshoot various issues with other dba’s/developers
- Point of Contact for Vendor escalation
- Point of Contact for professional service to Customers
- Cross-platform migration from Oracle to MySQL/MariaDB/PostgreSQL/Aurora
- Support the creation, maintenance, and implementation of procedures regarding how problems are identified, received, documented, distributed, and corrected
- Ensures project documentation is complete, current, and stored appropriately
- Manages day-to-day project and scope changes
- Communicate and coordinate database changes, backups, and downtime to users
- Identifies potential security issues and recommend strategies to ensure database security
- Research and evaluate new technologies
- Proactively monitor systems for optimum performance and capacity constraints
- Establish standards and best practices for SQL
- Interact with and coach developers in SQL scripting
- Perform database backup and recovery
- Provides 24x7 support for enterprise database systems
- Must provide mentoring and training to other staff members
- Write procedural documentation including requirements for databases
- Develop and coordinate knowledge transfer
- Establishes enterprise-wide uniform infrastructure, including supporting defined departmental content processes and creating guidelines for content deployment
- Interacts with business units to gather, define, and organize the delivery of business solutions Data
- Modeling, design & implementation based on established standards
- Automate manual tasks
- Candidate with a college degree and relevant work experience
- 7+ years of hands-on DBA experience with Oracle, MySQL, MariaDB, and PostgreSQL and supporting tools
- Strong experience with Linux is required, including command-line editors, scripting (shell, Python, Perl, etc.)
- Experience in database performance tuning and strong SQL tuning skills
- Experience in database and cross-platform upgrades required Experience in all aspects of the software development lifecycle including requirements gathering, design, coding, testing and production support
- Must be familiar with RDBMS concepts, practices, and procedures
- Must have knowledge of network connectivity
- Extensive experience with Export/Import, Backup and Recovery
- Extensive experience with Database Replication Master/Slave, Master/Master (BDR)
- Extensive experience with MySQL (MariaDB, Percona) Galera cluster
- Experience with MaxScale
- Proficient in SQL Language
- Knowledge of ServiceNow, or similar Ticket Management Software
- Knowledge of SAN infrastructure including HP and NetApp
- Ability to work on projects at a time
- Knowledge of middle-tier application servers
- Strong troubleshooting and problem resolution skills
- Good knowledge of Data Modeling
- Knowledge of XML and JDBC
- Experience of NoSQL databases (Cassandra, Oracle NoSQL, MongoDB) is a plus
- Certifications on MySQL, PostgreSQL, and Aurora
NodeJS (Node.js)PostgreSQLAbout the Backend Developer
We are looking at a diligent, driven, passionate person for our efforts on engagement and retention of our customers (schools) in a high growth environment. Backend Developer will be the face of the organisation for the schools that are using the platform on a day to day basis. The Developer will interact with the schools via the chat support and email requests and resolve any issues that the schools might be facing in using the platform or extend any support they might be needing to use the platform to its fullest.
- As a Backend Developer, you will play a major role in, developing and deploying high-quality web platforms. In this multifaceted role, you will get the opportunity to work along curriculum experts, teachers, and students, and user-test the product in real school settings.
Preferred Qualifications/Skills
* Frameworks & Technologies: Node.js
* Database: PostgreSQL, SQL
* Tools: Git basics, Scripting basics
* Soft Skills: Having a bias towards action, a good sense of design, empathy, and good communication skills
* Excellent written and oral communication skills
* Great interpersonal skills
About Toddle: ( http://www.toddleapp.com/" target="_blank">www.toddleapp.com )
Follow CutshortSubodh Popalwar
Software Engineer, Memorres