Lead Junior Backend Software Engineer Application Development Jobs

Want to be a bswifter? At bswift we’ve been transforming benefits administration since 1996, making it simpler, smarter, and more human. Our state-of-the-art, cloud-based technology and services empower employees to understand, manage, and love their benefits. From downtown Chicago, and remotely across the country, we serve thousands of companies and millions of people nationwide, reducing administrative burdens and freeing HR teams to focus on creating thriving, people-first workplaces. We’re looking for motivated and goal-driven individuals who share our passion for delivering excellence and creating solutions that make a difference. The reward is a fun, flexible and creative environment with ample opportunity for professional and personal growth. If you love the bswift values of pursue excellence, embrace accountability, deliver superior service, and be a great place to work, we want to hear from you! About the Role We are looking for an AI Engineer II to design, build, and deploy cutting-edge generative AI applications , including agentic workflows and intelligent chat experiences , that transform how employees interact with their benefits. This role goes beyond individual contribution—you will own complex AI features end-to-end , influence architecture decisions around LLMs and agent systems , and mentor junior engineers . You will play a key role in bringing secure, scalable, and high-performance AI solutions to production using AWS cloud technologies. You will collaborate closely with software engineers, architects, product managers, and cross-functional teams to deliver seamless and impactful user experiences Key Responsibilities 1. Solution Design & Development Lead the design and development of scalable, secure, and high-performance applications . Architect robust backend systems and integrate them with frontend applications and third-party services. Drive technical decisions and participate in design reviews alongside senio

Scale’s rapidly growing International Public Sector team is focused on using AI to address critical challenges facing the public sector around the world. Our core work consists of: Creating custom AI applications that will impact millions of citizens Generating high-quality training data for custom LLMs Upskilling and advisory services to spread the impact of AI As a Full Stack Software Engineer (Forward Deployed), you’ll collaborate directly with public sector counterparts to quickly build full-stack, AI applications, to solve their most pressing challenges and achieve meaningful impact for citizens. At Scale, we’re not just building AI solutions—we’re enabling the public sector to transform their operations and better serve citizens through cutting-edge technology. If you’re ready to shape the future of AI in the public sector and be a founding member of our team, we’d love to hear from you. You will: Serve as the lead technical strategist for public sector engagements, converting ambiguous mission requirements into robust architectural roadmaps and guiding onsite implementation Architect the fundamental frameworks for production-grade AI applications, setting the gold standard for how interactive UIs, backend systems, and AI models are integrated at scale to deliver reliable outcomes. Guide the evolution of cloud infrastructure, ensuring security, global scalability, and long-term system integrity across all environments. Direct the development of core platforms and shared services, ensuring they solve cross-cutting needs for diverse global client use cases. Partner with cross-functional leadership to steer the technical roadmap, mentoring senior and junior staff and ensuring all products align with a cohesive, future-proof technical architecture. Bridge the gap between the field and the core platform by turning real-world client lessons into the reusable patterns that power the entire engineering team. Ideally you’d have: Masters or Phd in Computer Science or eq

Join the Vector Search team and help build a cutting-edge vector database on top of MongoDB. Our team is responsible for the syntax and implementation of MongoDB's $vectorSearch aggregation, which enables approximate nearest neighbor queries over high-dimensional vectors. We are a small team with a large and rapidly growing customer base, providing engineers an opportunity to make a highly-visible, broad impact. When scaling search to billions of vectors, performance is paramount. We're looking for engineers who enjoy solving complex and open-ended problems that directly impact users' performance. This role is based in San Francisco, CA with a hybrid work model. You would get to: Implement new features within MongoDB's $search and $vectorSearch aggregation operators Work cross-functionally with Product teams to define new query and index syntax Identify and address performance bottlenecks in filter queries and nearest neighbor search Have the opportunity to lead projects and own subsystems Perform code reviews with peers, review technical designs, and mentor junior developers Ideally you will be: 3+ years of experience working on large-scale backend systems Experience writing high-performance applications in Java or another JVM language A growth mindset and the desire to learn quickly through taking on challenges, reflecting on outcomes, and incorporating feedback Passionate about optimization, code quality, and problem solving Bonus: experienced with Apache Lucene, vector databases, or high-throughput web services Success Measures In 3 months you'll have a solid high-level understanding of what our team does and how we operate You'll have contributed to the development of an existing project and completed several small improvements or bug fixes In 6 months you'll be reviewing code and project designs, and be an active participant in team meetings In 12 months you'll have a thorough understanding of the systems our team owns and have led a small project. You'll have

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. As a Senior Software Engineer on our Ads Platform team, you will architect and build foundational ads systems that are capable of reliably serving Roblox’s massive scale. You will drive performance improvements to our ads serving and delivery infrastructure, while expanding our systems to support a variety of new and immersive ads experiences. Your scope will span across multiple teams and require close collaboration with engineers across ML, backend, and analytics to shape the future of ads infrastructure at Roblox. This role is a great fit for you if you are proficient in managing large scale systems and data-driven applications and have a zeal for developing inspiring, easily maintainable, and reusable code. Join our highly skilled and rapidly growing team and make a significant impact at Roblox. This position will report to our Senior Engineering Manager and require you to work onsite at our HQ in San Mateo, CA Tuesdays to Thursdays. You Will: Build and ship best-in-class Ads products used by hundreds of millions of users. Develop backend services that scale to billions of products and transactions. Be a tech lead and mentor junior engineers Self-organize and take ownership of projects

ABOUT THE ROLE We are looking for a highly accomplished backend software engineer with extensive experience in leading and building customer facing performant backend services. You will be on the team that creates and expands Peloton’s e-commerce presence on the web, retail and other sales channels. You will be a hands-on technical lead on the team that will be working to build highly scalable and disjoint backend platforms and services for our users, both internal and external. YOUR DAILY IMPACT AT PELOTON Be a hands-on technical leader with focus on delivery of small to large initiatives Guide the team to make strategic technical decisions that enable fast, reliable execution, and that maintain positive relationships with key stakeholders Work within an agile development environment with peer engineers, designers, and product managers on a daily basis to scope, develop and deliver a software experience that realizes the product strategy Be a part of a positive and inclusive culture that is hyper-focused on cultivating growth and learning for both engineers and non-engineers YOU BRING TO PELOTON 6+ years software development experience, including leadership over delivery of high impact projects Experience with Java, Kotlin, Python or similar languages Experience building and scaling out RESTful microservices Experience with large-scale event processing & messaging technologies like Kafka and Amazon SQS Familiarity with accessing, querying and writing to data stores like PostgreSQL, MongoDB, DynamoDB, Elasticsearch, etc. Experience with Spring Boot, Docker and Kubernetes Experience in Unit Testing/Test Driven Development Experience in cloud infrastructure like AWS/GCP Experience with mentoring junior engineers Working knowledge of GraphQL Experience working with DataDog or similar monitoring tools Strong desire to learn and mentor engineers, helping them achieve their highest potential An agile mindset that embraces iterative design Experience with end to

DataHub is an AI & Data Context Platform adopted by over 3,000 enterprises, including Apple, CVS Health, Netflix, and Visa. Innovated jointly with a thriving open-source community of 13,000+ members, DataHub's metadata graph provides in-depth context of AI and data assets with best-in-class scalability and extensibility. The company's enterprise SaaS offering, DataHub Cloud, delivers a fully managed solution with AI-powered discovery, observability, and governance capabilities. Organizations rely on DataHub solutions to accelerate time-to-value from their data investments, ensure AI system reliability, and implement unified governance, enabling AI & data to work together and bring order to data chaos. About the job DataHub is an AI & Data Context Platform adopted by over 3,000 enterprises, including Apple, CVS Health, Netflix, and Visa. Innovated jointly with a thriving open-source community of 13,000+ members, DataHub's metadata graph provides an in-depth context of AI and data assets with best-in-class scalability and extensibility. The company's enterprise SaaS offering, DataHub Cloud, delivers a fully managed solution with AI-powered discovery, observability, and governance capabilities. Organizations rely on DataHub solutions to accelerate time-to-value from their data investments, ensure AI system reliability, and implement unified governance, enabling AI & data to work together and bring order to data chaos. In this role, you will Build core capabilities for our SaaS Platform across multiple clouds Drive development of functional enhancements for Data Discovery, Observability & Governance for both OSS and SaaS offering Lead efforts around non functional aspects like performance, scalability, reliability Lead and mentor junior engineers Work closely with PM, Customers and OSS community Requirements Over 8+ years of experience building and scaling backend systems, preferably in cloud-first or SaaS environments. Solve complex tech

Opportunity Overview: This is a unique opportunity to join a software engineering team that is growing quickly. You will build impactful healthcare technology on a modern stack utilizing your full stack software engineering background. Last but not least: People who succeed here are empathetic teammates who are candid, kind, caring, and embody our core values and principles . We believe that diverse, inclusive teams make the most impactful work. Cohere is deeply invested in ensuring that we have a supportive, growth-oriented environment that works for everyone. What you’ll do: Lead technical design and architecture for complex features across our business intelligence platform Take full ownership of end-to-end feature releases, platform enhancements, and system optimization initiatives Drive technical decision-making by conducting thorough analysis, evaluating trade-offs, and making data-driven architectural choices Architect and implement highly scalable cloud-based data services, APIs, ETL pipelines, and user interfaces Build mission-critical backend systems supporting analytics, reporting, and complex data query capabilities at scale Design and develop intuitive UI platforms and interactive dashboards for data visualization and business intelligence Champion engineering excellence by establishing and enforcing best practices, design patterns, and coding standards Optimize system performance, identify bottlenecks, and implement solutions for scalability and reliability Define and maintain comprehensive test strategies, ensuring high code quality and test coverage Actively participate in ensuring Cohere maintains a disciplined approach to healthcare security, compliance, and data governance Mentor and coach junior and mid-level engineers, fostering their technical growth and career development Collaborate cross-functionally with product, data science, analytics, and business stakeholders to deliver robust technical solutions ISMS roles and respon

MongoDB’s Storage Layer Services (SLS) team is re-architecting the MongoDB cloud storage layer and sits at the heart of our next-generation cloud storage architecture. This relatively new team is building performant, multi-tenant distributed storage services that both enhance today’s Atlas storage stack and enable more customer workloads to run more efficiently. We are looking for a talented Senior Software Engineer to join our team as we execute on a multi-year roadmap and prepare to launch and rapidly scale services that handle petabytes of data. Come do some of the most interesting work of your career as we Think Big and Go Far for our customers! This role can be based out of our New York City office (hybrid working model) or remotely in the North America region. What you’ll do Design, build, and operate control plane services powering an elastic and multi-tenant storage layer for thousands of database instances. Solve problems around maintaining high availability and performance during load spikes, hardware failures, cloud provider outages, and other disruptions. Contribute to a culture of operational excellence through dashboards, playbooks, and on-call improvements. Lead complex technical projects from planning through successful deployment with clear stakeholder updates. Partner closely with peers across database, cloud, and infrastructure engineering teams as well as project management to investigate incidents and develop long-term roadmaps. Mentor junior engineers and foster a collaborative team environment. We’re looking for someone with 5+ years of professional software development experience building, deploying, and operating multi-tenant cloud services with a focus on operational excellence. Experience with large backend/compiled codebases, such as Rust or C/C++. Experience with containerization and orchestration platforms (e.g. Kubernetes). Experience with observability tooling (e.g. time series metrics, dashboards). Experience with distributed systems

About Supabase Supabase is the Postgres development platform, built by developers for developers. We provide a complete backend solution including Database, Auth, Storage, Edge Functions, Realtime, and Vector Search. All services are deeply integrated and designed for growth. About the Role We’re looking for an experienced Database Support Engineer to join our Support Team and help developers unblock complex issues, build more reliably, and get the most out of the Supabase platform. You’ll work closely with customers and engineering, helping us improve product quality and developer experience based on real-world usage. This role is ideal for someone who thrives in async, fast-paced environments and is excited about building developer tools that scale to millions. What You’ll Be Responsible For In this role, you’ll: Resolve Technical Issues: Investigate and resolve advanced customer issues across Postgres, Auth, RLS, Storage, Realtime, Edge Functions, and client libraries. Provide Consultative Advice: Offer proactive guidance to optimize workloads, avoid common pitfalls, and provide tailored advice to our most advanced users. Bridge the Gap to Engineering: Reproduce bugs, isolate root causes, propose workarounds, and escalate to engineering with solid reproduction steps. Investigate Deeply: Ask smart, targeted questions that turn incomplete reports into actionable cases. Communicate Effectively: Communicate clearly and empathetically with users of all levels—especially during high-impact or time-sensitive situations. Drive Product Improvement: Spot patterns across tickets and recommend improvements to documentation, tooling, and the product itself. Mentor and Lead: Mentor junior team members and help raise the overall bar for support quality. You Might Be a Good Fit If Experience: You have 7+ years in technical support, databases, backend engineering, SRE, or similar roles. Postgres Expertise: You know PostgreSQL deeply—including autovacuum behavior, WAL growth, long

Technical Lead - Backend About Us: Paytm is India's leading mobile payments and financial services distribution company. Pioneer of the mobile QR payments revolution in India, Paytm builds technologies that help small businesses with payments and commerce. Paytm’s mission is to serve half a billion Indians and bring them to the mainstream economy with the help of technology. About the role: We are looking for a Tech Lead for the Gold Tech team to drive technical direction, architecture, and delivery of Paytm Digital Gold — a high-scale bullion platform serving consumer and merchant use cases at lakhs+ rpm. This role combines hands-on engineering with technical leadership — you will architect solutions, unblock the team, own critical money-path reliability, and partner with Product and Engineering leadership on roadmap and execution. We are building reliable, high-availability financial products and need a Tech Lead who can own modules end-to-end, raise the bar on code quality, and mentor junior engineers. Key Responsibilities: ● Define and evolve technical architecture for Gold services — scalability, reliability, security, and maintainability. ● Lead design and implementation of high-availability, high-volume transactional systems. ● Own end-to-end delivery of major initiatives — breakdown, estimation, risk management, and production rollout. ● Set engineering standards: code quality, review practices, testing strategy, observability, and incident response. ● Drive cross-service integration design. ● Guide the team on Kafka event design, scheduler orchestration, CDC pipelines, and data consistency patterns. ● Mentor and grow engineers (SSE and below); conduct reviews, pair on complex problems, and build team capability. ● Contribute hands-on to critical modules; unblock the team on complex bugs, performance issues, and production fires. ● Represent Gold Tech in architecture reviews, tech debt prioritization, and platform-wide initiatives. Skills Required: ●

Join Delphi - Where Innovation meets transformation At Delphi, we believe in creating an environment where our people thrive. Our hybrid work model empowers you to choose where you work—whether it's from the office, your home, or a mix of both—so you can prioritize what matters most. We are committed to supporting your personal goals, family, and overall well-being while driving transformative results for our clients. We welcome exceptional talent from anywhere across the globe. Interviews and onboarding are conducted virtually, reflecting our digital-first mindset. Rooted in the region, we specialize in delivering tailored, impactful solutions in Data, Advanced Analytics and AI, Infrastructure, Cloud Security, and Application Modernization. Whether it’s enabling predictive analytics , transforming operations with automation, or driving customer engagement with intelligent platforms, we are the trusted partner for organizations ready to embrace a smarter, more efficient future. About the role We are seeking a seasoned and visionary Senior Backend Developer to lead technical initiatives and drive innovation across our client projects. This role bridges technical excellence with client engagement— architecting sophisticated solutions, mentoring junior talent, and translating complex business requirements into scalable, AI-powered applications. The ideal candidate is not just a developer but a technical leader who understands business processes, modern development practices, and can help drive transformative value for our clients using cutting-edge Python technologies and AI frameworks. Job responsibilities Architect and design scalable applications using FastAPI, implementing advanced features and optimization strategies Lead the development of sophisticated AI workflows using LangChain, LangGraph, and related frameworks for production environments Build complex Streamlit applications with custom components, advanced data visualizatio

AI Engineer - Enterprise Search Overview We are looking for an experienced Enterprise Search Lead to build and optimize our multi-tenant enterprise search solution. This role focuses on creating scalable systems that integrate seamlessly with customer environments, leveraging cutting-edge AI and ML technologies. You will design and manage the enterprise knowledge graph, implement personalized search experiences, and drive AI- powered innovations to enhance search relevance and ITSM workflows. What You Will Do: Build and structure our enterprise knowledge graph to organize content, people, and activity into meaningful relationships for better search relevance. Develop and refine personalized ranking models that adapt to user behavior and improve search results over time. Design ways to adapt AI language models to each customerʼs data for enhanced accuracy and context. Explore innovative methods to combine LLMs with search engines for answering complex queries Write clean, robust, and maintainable code that integrates smoothly with multi-tenant systems. Collaborate with cross-functional teams to align search capabilities with ITSM workflows. Mentor junior engineers or learn from experienced ones to grow as a technical leader. What You Should Have 3-5 years of experience working on enterprise search products with AI/ML integration. Expertise in multi-tenant systems and securely integrating with external customer systems. Hands-on experience with tools like Elasticsearch, Solr, or similar search platforms. Strong coding skills in Python, Java, or equivalent languages. A passion for solving complex problems with AI and delivering intuitive user experiences. Important notice for candidates: Job scams are on the rise. Please keep these guidelines in mind when applying for any open roles at Atomicwork. Only apply through official Atomicwork channels. We do not use third-party agencies or individuals who ask for payments in exchange for interviews or offer letter

Staff Engineer - Enterprise Search Overview We are looking for an experienced Enterprise Search Lead to build and optimize our multi-tenant enterprise search solution. This role focuses on creating scalable systems that integrate seamlessly with customer environments, leveraging cutting-edge AI and ML technologies. You will design and manage the enterprise knowledge graph, implement personalized search experiences, and drive AI-powered innovations to enhance search relevance and ITSM workflows. What You Will Do Build and structure our enterprise knowledge graph to organize content, people, and activity into meaningful relationships for better search relevance. Develop and refine personalized ranking models that adapt to user behavior and improve search results over time. Design ways to adapt AI language models to each customer’s data for enhanced accuracy and context. Explore innovative methods to combine LLMs with search engines for answering complex queries. Write clean, robust, and maintainable code that integrates smoothly with multi-tenant systems. Collaborate with cross-functional teams to align search capabilities with ITSM workflows. Mentor junior engineers or learn from experienced ones to grow as a technical leader. What You Should Have 5+ years of experience working on enterprise search products with AI/ML integration. Expertise in multi-tenant systems and securely integrating with external customer systems. Hands-on experience with tools like Elasticsearch, Solr, or similar search platforms. Strong coding skills in Python, Java, or equivalent languages. A passion for solving complex problems with AI and delivering intuitive user experiences. Important notice for candidates: Job scams are on the rise. Please keep these guidelines in mind when applying for any open roles at Atomicwork. Only apply through official Atomicwork channels. We do not use third-party agencies or individuals wh

We’re hiring at Paytm Payments Services Limited(PPSL) About the Role- As a Product Manager (Devices), you will own and lead the device charter across Soundbox, EDC, and emerging AI-enabled devices. You will set the strategy, define the roadmap, and work closely with CXOs to drive merchant experience, operational efficiency, and business impact. Key Responsibilities- - Define and own the device roadmap & vision aligned to Paytm’s growth strategy. - Lead end-to-end device lifecycle management: activation → monitoring → predictive health → refurb/replacement → end-of-life. - Drive AI-powered device innovation (merchant-facing AI device, multilingual bot integration). -Influence leadership and cross-functional priorities with data-backed recommendations. - Mentor PMs/Associate PMs and build a strong device product culture. - Track industry benchmarks and competitive landscape to position Paytm devices ahead of peers. What You’ll Contribute To - Large-scale AI adoption strategy. - Cross-device predictive health models to reduce downtime and false positives. - Proactive merchant engagement through Device and CLM. - Sustainability & cost efficiency through smart refurb and replacement policies. Skills & Qualifications- - Product experience, with at least 2 years owning device/IoT/fintech hardware products. - Strong leadership & roadmap ownership skills, with CXO-level exposure. - Experience in driving cross-functional programs (engineering, business, operations). - Strategic thinker with execution excellence. Ability to influence stakeholders and mentor junior PMs. Why join us? A collaborative output driven program that brings cohesiveness across businesses through technology Improve the average revenue per use by increasing the cross-sell opportunities A solid 360 feedback from your peer teams on your support of their goals Respect, that is earned, not demanded from your peers and manager Compensation: If you are the right fit, we believe in cre

Instawork is on a mission to create meaningful economic opportunities for skilled hourly professionals in communities around the globe. Our AI-powered labor marketplace helps local businesses scale, and enables global technology companies to push the frontiers of robotics and AI. Backed by world-class investors like Benchmark, Spark Capital, Craft Ventures, Greylock, Y Combinator, and others, we’re looking for exceptional talent to reimagine the way the world works. Senior Recruiter – Non-Tech & Tech Love finding great talent others can't? 🚀 We’re looking for a strong and hands-on Senior Recruiter to own mid-level to senior hiring across both Tech and Non-Tech functions. You’ll partner closely with hiring managers and business leaders to build high-quality talent pipelines, drive targeted sourcing, and close exceptional candidates. What You'll Do Own the end-to-end recruitment lifecycle for mid to senior-level roles. Lead headhunting, niche sourcing, and passive candidate engagement across Tech and Non-Tech roles. Build strong talent pipelines through LinkedIn, referrals, networking, and creative sourcing strategies. Partner with hiring managers and senior leaders to understand hiring needs and define candidate profiles. Manage candidate relationships, interviews, offer negotiations, and closures. Use ATS platforms, AI-powered sourcing tools, and recruitment data to improve hiring efficiency. Mentor junior recruiters or interns and help raise recruitment standards. What We're Looking For 4+ years of experience in Talent Acquisition / Recruitment. Strong track record of hiring mid-level to senior talent across Tech and Non-Tech roles. Experience in campus hiring, including building and managing relationships with colleges, universities, and placement teams. Strong campus engagement skills with the ability to develop long-term relationships with key institutions. Exceptional sourcing and headhunting skills with experience engaging passive candidates. Strong stake